{"id":79374,"date":"2024-09-30T23:02:49","date_gmt":"2024-09-30T16:02:49","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=79374"},"modified":"2024-09-30T23:02:49","modified_gmt":"2024-09-30T16:02:49","slug":"huong-dan-su-dung-vuejs-tutorial","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/","title":{"rendered":"VueJS Tutorial: H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng VueJS A-Z"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#VueJS_la_gi_Tinh_nang_cua_VueJS\" >VueJS l\u00e0 g\u00ec? T\u00ednh n\u0103ng c\u1ee7a VueJS?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#VueJS_co_gi_dac_biet_so_voi_cac_framework_khac\" >VueJS c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t so v\u1edbi c\u00e1c framework kh\u00e1c?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#Huong_dan_cai_dat_VueJS_tutorial\" >H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t VueJS tutorial<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#VueJS_tutorial_%E2%80%93_Tron_bo_huong_dan_su_dung_VueJS_cho_nguoi_moi_bat_dau\" >VueJS tutorial &#8211; Tr\u1ecdn b\u1ed9 h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng VueJS cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#Cac_cau_hoi_thuong_gap_ve_VueJS_tutorial\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 VueJS tutorial<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/#Tong_ket_VueJS_tutorial\" >T\u1ed5ng k\u1ebft VueJS tutorial<\/a><\/li><\/ul><\/nav><\/div>\n<p><em><strong>VueJS l\u00e0 framework \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t ph\u1ed5 bi\u1ebfn trong l\u1eadp tr\u00ecnh Frontend b\u1edfi nh\u1eefng t\u00ednh n\u0103ng ti\u1ec7n l\u1ee3i c\u1ee7a n\u00f3. Khi \u0111\u1ecbnh h\u01b0\u1edbng b\u1ea3n th\u00e2n tr\u1edf th\u00e0nh Frontend Developer hay Full-stack Developer, h\u00e3y trang b\u1ecb cho m\u00ecnh tr\u1ecdn b\u1ed9 b\u00ed k\u00edp \u201cVueJS tutorial\u201d m\u00e0 ITviec \u0111\u00e3 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft trong b\u00e0i vi\u1ebft n\u00e0y nh\u00e9.<\/strong><\/em><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Vue l\u00e0 g\u00ec? T\u00ednh n\u0103ng c\u1ee7a VueJS<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">VueJS c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t so v\u1edbi c\u00e1c framework kh\u00e1c?<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">VueJS Tutorial &#8211; Tr\u1ecdn b\u1ed9 b\u00ed k\u00edp cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 VueJS tutorial<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"VueJS_la_gi_Tinh_nang_cua_VueJS\"><\/span><b>VueJS l\u00e0 g\u00ec? T\u00ednh n\u0103ng c\u1ee7a VueJS?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">VueJS (hay Vue.js) l\u00e0 m\u1ed9t trong nh\u1eefng framework JavaScript m\u00e3 ngu\u1ed3n m\u1edf n\u1ed5i ti\u1ebfng, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (IU). VueJS t\u1eadp trung v\u00e0o l\u1edbp view (view layout) n\u00ean r\u1ea5t d\u1ec5 d\u00e0ng t\u00edch h\u1ee3p v\u00e0o c\u00e1c d\u1ef1 \u00e1n \u0111\u1ec3 l\u1eadp tr\u00ecnh frontend m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Framework Vue.js c\u00f3 c\u00e1c t\u00ednh n\u0103ng ch\u00ednh sau:<\/span><\/p>\n<ul>\n<li><b>S\u1eed d\u1ee5ng Virtual DOM<\/b><span style=\"font-weight: 400;\">: Thay v\u00ec tr\u1ef1c ti\u1ebfp thao t\u00e1c l\u00ean DOM th\u1ef1c, VueJS t\u1ea1o ra m\u1ed9t b\u1ea3n sao c\u1ee7a DOM d\u01b0\u1edbi d\u1ea1ng c\u1ea5u tr\u00fac d\u1eef li\u1ec7u JavaScript. Ch\u1ec9 nh\u1eefng thay \u0111\u1ed5i th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft m\u1edbi \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt l\u00ean DOM th\u1ef1c, gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t v\u00e0 c\u1ea3i thi\u1ec7n t\u1ed1c \u0111\u1ed9 render.<\/span><\/li>\n<li><b>Data Binding: <\/b><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng li\u00ean k\u1ebft d\u1eef li\u1ec7u c\u1ee7a VueJS cho ph\u00e9p Frontend Developer thao t\u00e1c ho\u1eb7c g\u00e1n gi\u00e1 tr\u1ecb cho c\u00e1c thu\u1ed9c t\u00ednh HTML, thay \u0111\u1ed5i ki\u1ec3u d\u00e1ng, g\u00e1n l\u1edbp v\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a ch\u1ec9 th\u1ecb li\u00ean k\u1ebft v-bind c\u00f3 s\u1eb5n.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Components: <\/b><span style=\"font-weight: 400;\">M\u1ed9t trong nh\u1eefng t\u00ednh n\u0103ng quan tr\u1ecdng c\u1ee7a VueJS, cho ph\u00e9p t\u1ea1o c\u00e1c ph\u1ea7n t\u1eed t\u00f9y ch\u1ec9nh c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng trong HTML.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>X\u1eed l\u00fd s\u1ef1 ki\u1ec7n:<\/b><span style=\"font-weight: 400;\"> v-on l\u00e0 thu\u1ed9c t\u00ednh \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u00e1c ph\u1ea7n t\u1eed DOM \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c s\u1ef1 ki\u1ec7n trong VueJS.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Animation \/ Transition: <\/b><span style=\"font-weight: 400;\">VueJS cung c\u1ea5p nhi\u1ec1u c\u00e1ch chuy\u1ec3n \u0111\u1ed5i cho c\u00e1c ph\u1ea7n t\u1eed HTML khi ch\u00fang \u0111\u01b0\u1ee3c th\u00eam, c\u1eadp nh\u1eadt ho\u1eb7c x\u00f3a kh\u1ecfi DOM.<\/span><\/li>\n<\/ul>\n<\/li>\n<li><b>T\u00ednh to\u00e1n: <\/b><span style=\"font-weight: 400;\">VueJS. c\u00f3 th\u1ec3 theo d\u00f5i thay \u0111\u1ed5i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c ph\u1ea7n t\u1eed UI v\u00e0 th\u1ef1c hi\u1ec7n t\u00ednh to\u00e1n c\u1ea7n thi\u1ebft m\u00e0 kh\u00f4ng c\u1ea7n code b\u1ed5 sung.<\/span><\/li>\n<li><b>Templates: <\/b><span style=\"font-weight: 400;\">VueJS cung c\u1ea5p m\u1eabu d\u1ef1a tr\u00ean HTML \u0111\u1ec3 li\u00ean k\u1ebft DOM v\u1edbi d\u1eef li\u1ec7u c\u1ee7a instance Vue. Vue bi\u00ean d\u1ecbch c\u00e1c m\u1eabu th\u00e0nh c\u00e1c h\u00e0m render Virtual DOM.<\/span><\/li>\n<li><b>Ch\u1ec9 th\u1ecb: <\/b><span style=\"font-weight: 400;\">VueJS c\u00f3 c\u00e1c ch\u1ec9 th\u1ecb t\u00edch h\u1ee3p s\u1eb5n nh\u01b0 v-if, v-else, v-show, v-on, v-bind v\u00e0 v-model,&#8230; \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng kh\u00e1c nhau tr\u00ean frontend.<\/span><\/li>\n<li><b>Watchers:<\/b><span style=\"font-weight: 400;\"> Watcher \u0111\u1ea3m nhi\u1ec7m qu\u00e1 tr\u00ecnh x\u1eed l\u00fd t\u1ea5t c\u1ea3 thay \u0111\u1ed5i d\u1eef li\u1ec7u, l\u00e0m cho code \u0111\u01a1n gi\u1ea3n, g\u00e3y g\u1ecdn h\u01a1n.<\/span><\/li>\n<li><b>Routing:<\/b><span style=\"font-weight: 400;\"> \u0110i\u1ec1u h\u01b0\u1edbng gi\u1eefa c\u00e1c trang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u1edbi s\u1ef1 tr\u1ee3 gi\u00fap c\u1ee7a vue-router.<\/span><\/li>\n<li><b>Tr\u1ecdng l\u01b0\u1ee3ng nh\u1eb9: <\/b><span style=\"font-weight: 400;\">Script c\u1ee7a VueJS r\u1ea5t nh\u1eb9 v\u00e0 hi\u1ec7u su\u1ea5t c\u0169ng r\u1ea5t nhanh.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"VueJS_co_gi_dac_biet_so_voi_cac_framework_khac\"><\/span><b>VueJS c\u00f3 g\u00ec \u0111\u1eb7c bi\u1ec7t so v\u1edbi c\u00e1c framework kh\u00e1c?<\/b><i><\/i><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b>T\u00ednh n\u0103ng<\/b><\/td>\n<td><b>VueJS<\/b><\/td>\n<td><a href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-reactjs-la-gi\/\" target=\"_blank\" rel=\"noopener\"><b>ReactJS<\/b><\/a><\/td>\n<td><b>AngularJS<\/b><\/td>\n<td><b>Ember<\/b><\/td>\n<td><b>Knockout<\/b><\/td>\n<td><b>Polymer<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Virtual DOM<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Template vs JSX<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Template (HTML, JS, CSS ri\u00eang)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JSX (m\u1ecdi th\u1ee9 l\u00e0 JavaScript)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Template (HTML)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Template (HTML)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Template (HTML)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Template (HTML)<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>C\u00f4ng c\u1ee5 c\u00e0i \u0111\u1eb7t<\/b><\/td>\n<td><span style=\"font-weight: 400;\">vue-cli \/ CDN \/ npm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">create-react-app \/ npm<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Angular CLI<\/span><\/td>\n<td><span style=\"font-weight: 400;\">ember-cli<\/span><\/td>\n<td><span style=\"font-weight: 400;\">CDN \/ npm \/ knockout<\/span><\/td>\n<td><span style=\"font-weight: 400;\">npm \/ polymer-cli<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Ph\u1ed5 bi\u1ebfn<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u00e1t tri\u1ec3n<\/span><\/td>\n<td><span style=\"font-weight: 400;\">R\u1ea5t ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">R\u1ea5t ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Ph\u1ee5 thu\u1ed9c<\/b><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u00cdt<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>T\u00ednh linh ho\u1ea1t<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Cao<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Th\u1ea5p<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cao<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>H\u1ed7 tr\u1ee3 phi\u00ean b\u1ea3n c\u0169<\/b><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ed1t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">K\u00e9m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ed1t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u00f4ng r\u00f5<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh<\/b><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript \/ TypeScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TypeScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript \/ TypeScript\u00a0<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript \/ TypeScript\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Hi\u1ec7u su\u1ea5t<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Nhanh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhanh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhanh (h\u1ed7 tr\u1ee3 IE c\u0169)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Trung b\u00ecnh<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u1ed1ng v\u1edbi VueJS<\/b><\/td>\n<td><span style=\"font-weight: 400;\">&#8212;<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ec9 th\u1ecb<\/span><\/td>\n<td><span style=\"font-weight: 400;\">CLI<\/span><\/td>\n<td><span style=\"font-weight: 400;\">CLI, Router, Template, Component<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8212;<\/span><\/td>\n<td><span style=\"font-weight: 400;\">&#8212;<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110i\u1ec3m m\u1ea1nh<\/b><\/td>\n<td><span style=\"font-weight: 400;\">D\u1ec5 h\u1ecdc, nh\u1eb9, c\u1ed9ng \u0111\u1ed3ng r\u1ed9ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u1ed5 bi\u1ebfn<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhi\u1ec1u t\u00ednh n\u0103ng, \u0111\u1ea7y \u0111\u1ee7<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u1ea5u tr\u00fac r\u00f5 r\u00e0ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">H\u1ed7 tr\u1ee3 IE c\u0169<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Web component<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Huong_dan_cai_dat_VueJS_tutorial\"><\/span><b>H\u01b0\u1edbng d\u1eabn c\u00e0i \u0111\u1eb7t VueJS tutorial<\/b><i><\/i><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">L\u1eadp tr\u00ecnh vi\u00ean c\u00f3 th\u1ec3 c\u00e0i \u0111\u1eb7t VueJS theo nhi\u1ec1u c\u00e1ch kh\u00e1c nhau, nh\u01b0ng c\u00e0i \u0111\u1eb7t v\u1edbi CDN ho\u1eb7c c\u00e0i \u0111\u1eb7t c\u1ee5c b\u1ed9 b\u1eb1ng npm l\u00e0 hai c\u00e1ch ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/span><\/p>\n<p><strong>C\u00e0i \u0111\u1eb7t VueJS v\u1edbi CDN<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">Th\u00eam th\u1ebb sau<\/span><span style=\"font-weight: 400;\"> v\u00e0o trang HTML c\u1ee7a b\u1ea1n:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script src=\"<\/span><span style=\"font-weight: 400;\">https:\/\/cdn.jsdelivr.net\/npm\/vue@2.x\/dist\/vue.js<\/span><span style=\"font-weight: 400;\">\"&gt;&lt;\/script&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Ti\u1ebfp theo, thay \u0111\u1ed5i \u201c2.x\u201d b\u1eb1ng phi\u00ean b\u1ea3n Vue.js m\u00e0 b\u1ea1n mu\u1ed1n s\u1eed d\u1ee5ng. B\u00e2y gi\u1edd, b\u1ea1n \u0111\u00e3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng Vue.js cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/span><\/p>\n<p><strong>C\u00e0i \u0111\u1eb7t c\u1ee5c b\u1ed9 b\u1eb1ng npm<\/strong><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n quy m\u00f4 l\u1edbn, b\u1ea1n n\u00ean c\u00e0i \u0111\u1eb7t Vue c\u1ee5c b\u1ed9 b\u1eb1ng npm. N\u00f3 \u0111i k\u00e8m v\u1edbi Browserify v\u00e0 Webpack c\u00f9ng c\u00e1c c\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft kh\u00e1c, gi\u00fap cho vi\u1ec7c l\u1eadp tr\u00ecnh \u1ed5n \u0111\u1ecbnh h\u01a1n. \u0110\u1ec3 c\u00e0i \u0111\u1eb7t, b\u1ea1n nh\u1eadp c\u00e2u l\u1ec7nh sau: npm install vue.<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">npm init -y<\/span>\r\n\r\n<span style=\"font-weight: 400;\">npm install vue<\/span><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"VueJS_tutorial_%E2%80%93_Tron_bo_huong_dan_su_dung_VueJS_cho_nguoi_moi_bat_dau\"><\/span><b>VueJS tutorial &#8211; Tr\u1ecdn b\u1ed9 h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng VueJS cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>Declarative Rendering (K\u1ebft xu\u1ea5t khai b\u00e1o)<\/b><i><\/i><\/h3>\n<p><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng c\u1ed1t l\u00f5i c\u1ee7a Vue l\u00e0 k\u1ebft xu\u1ea5t khai b\u00e1o. T\u1ee9c l\u00e0 thay v\u00ec ph\u1ea3i vi\u1ebft t\u1eebng d\u00f2ng l\u1ec7nh \u0111\u1ec3 thao t\u00e1c tr\u1ef1c ti\u1ebfp l\u00ean DOM, b\u1ea1n ch\u1ec9 c\u1ea7n m\u00f4 t\u1ea3 giao di\u1ec7n HTML b\u1ea1n mu\u1ed1n tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i JavaScript, Vue s\u1ebd t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt DOM khi d\u1eef li\u1ec7u thay \u0111\u1ed5i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u1ea1n c\u00f3 th\u1ec3 khai b\u00e1o tr\u1ea1ng th\u00e1i b\u1eb1ng API reactive() c\u1ee7a Vue. C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c t\u1ea1o t\u1eeb reactive() l\u00e0 c\u00e1c Proxy JavaScript ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u00ecnh th\u01b0\u1eddng. V\u00ed d\u1ee5:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import { reactive } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const counter = reactive({<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0count: 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n\r\n<span style=\"font-weight: 400;\">console.log(counter.count) \/\/ 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">counter.count++<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Trong khi reactive() ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng (bao g\u1ed3m m\u1ea3ng v\u00e0 c\u00e1c lo\u1ea1i t\u00edch h\u1ee3p nh\u01b0 Map v\u00e0 Set) th\u00ec ref() c\u00f3 th\u1ec3 nh\u1eadn b\u1ea5t k\u1ef3 lo\u1ea1i gi\u00e1 tr\u1ecb n\u00e0o v\u00e0 t\u1ea1o ra m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ph\u01a1i b\u00e0y gi\u00e1 tr\u1ecb b\u00ean trong d\u01b0\u1edbi thu\u1ed9c t\u00ednh .value:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const message = ref('ITviec xin ch\u00e0o')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">console.log(message.value) \/\/ \"ITviec xin ch\u00e0o\"<\/span>\r\n\r\n<span style=\"font-weight: 400;\">message.value = 'Changed'<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Tr\u1ea1ng th\u00e1i ph\u1ea3n \u1ee9ng \u0111\u01b0\u1ee3c khai b\u00e1o trong kh\u1ed1i &lt;script setup&gt; c\u1ee7a th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng tr\u1ef1c ti\u1ebfp trong m\u1eabu. \u0110\u00e2y l\u00e0 c\u00e1ch k\u1ebft xu\u1ea5t v\u0103n b\u1ea3n \u0111\u1ed9ng d\u1ef1a tr\u00ean gi\u00e1 tr\u1ecb c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng counter v\u00e0 ref message, b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00fa ph\u00e1p:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;h1&gt;{{ message }}&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;p&gt;Count is: {{ counter.count }}&lt;\/p&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">N\u1ed9i dung b\u00ean trong d\u1ea5u ngo\u1eb7c nh\u1ecdn kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf c\u00e1c \u0111\u1ecbnh danh ho\u1eb7c \u0111\u01b0\u1eddng d\u1eabn, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 bi\u1ec3u th\u1ee9c JavaScript h\u1ee3p l\u1ec7 n\u00e0o, v\u00ed d\u1ee5:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;h1&gt;{{ message.split('').reverse().join('') }}&lt;\/h1&gt;<\/span><\/pre>\n<p><b>B\u00e0i t\u1eadp<\/b><span style=\"font-weight: 400;\">: H\u00e3y th\u1eed t\u1ea1o m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i ph\u1ea3n \u1ee9ng v\u00e0 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 hi\u1ec3n th\u1ecb n\u1ed9i dung v\u0103n b\u1ea3n \u0111\u1ed9ng cho &lt;h1&gt;.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ component logic<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ declare some reactive state here.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;h1&gt;ITviec xin ch\u00e0o&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { reactive, ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const counter = reactive({ count: 0 })<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const message = ref('Hello World!')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;h1&gt;{{ message }}&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;Count is: {{ counter.count }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Attribute Bindings (Li\u00ean k\u1ebft thu\u1ed9c t\u00ednh)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Trong Vue, d\u1ea5u ngo\u1eb7c nh\u1ecdn ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho n\u1ed9i suy v\u0103n b\u1ea3n (text interpolation). \u0110\u1ec3 li\u00ean k\u1ebft m\u1ed9t thu\u1ed9c t\u00ednh v\u1edbi m\u1ed9t gi\u00e1 tr\u1ecb \u0111\u1ed9ng, b\u1ea1n s\u1eed d\u1ee5ng ch\u1ec9 th\u1ecb v-bind, v\u00ed d\u1ee5:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;div v-bind:id=\"dynamicId\"&gt;&lt;\/div&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">V\u00ec v-bind \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t th\u01b0\u1eddng xuy\u00ean n\u00ean n\u00f3 c\u00f3 c\u00fa ph\u00e1p vi\u1ebft t\u1eaft chuy\u00ean d\u1ee5ng l\u00e0:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;div :id=\"dynamicId\"&gt;&lt;\/div&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">M\u1ed9t ch\u1ec9 th\u1ecb l\u00e0 m\u1ed9t thu\u1ed9c t\u00ednh \u0111\u1eb7c bi\u1ec7t b\u1eaft \u0111\u1ea7u b\u1eb1ng ti\u1ec1n t\u1ed1 v-. Ch\u00fang l\u00e0 m\u1ed9t ph\u1ea7n trong c\u00fa ph\u00e1p m\u1eabu c\u1ee7a Vue. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 n\u1ed9i suy v\u0103n b\u1ea3n, c\u00e1c gi\u00e1 tr\u1ecb ch\u1ec9 th\u1ecb l\u00e0 c\u00e1c bi\u1ec3u th\u1ee9c JavaScript c\u00f3 quy\u1ec1n truy c\u1eadp v\u00e0o tr\u1ea1ng th\u00e1i c\u1ee7a th\u00e0nh ph\u1ea7n.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ph\u1ea7n sau d\u1ea5u hai ch\u1ea5m (:id) l\u00e0 &#8220;\u0111\u1ed1i s\u1ed1&#8221; c\u1ee7a ch\u1ec9 th\u1ecb. \u1ede \u0111\u00e2y, thu\u1ed9c t\u00ednh id c\u1ee7a ph\u1ea7n t\u1eed s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 v\u1edbi thu\u1ed9c t\u00ednh dynamicId t\u1eeb tr\u1ea1ng th\u00e1i c\u1ee7a th\u00e0nh ph\u1ea7n.<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh:<\/b><span style=\"font-weight: 400;\"> H\u00e3y th\u1eed th\u00eam m\u1ed9t li\u00ean k\u1ebft l\u1edbp \u0111\u1ed9ng class v\u00e0o &lt;h1&gt;, s\u1eed d\u1ee5ng titleClass ref l\u00e0m gi\u00e1 tr\u1ecb \u0111\u1ec3 v\u0103n b\u1ea3n s\u1ebd chuy\u1ec3n sang m\u00e0u \u0111\u1ecf.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const titleClass = ref('title')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1&gt;ITviec xin ch\u00e0o&lt;\/h1&gt; <\/span><span style=\"font-weight: 400;\">&lt;!-- th\u00eam dynamic class binding \u1edf \u0111\u00e2y --&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;style&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">.title {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0color: red;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/style&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const titleClass = ref('title')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 :class=\"titleClass\"&gt;ITviec xin ch\u00e0o&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;style&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">.title {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0color: red;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/style&gt;<\/span><\/pre>\n<h3><b>Event Listener<\/b><i><\/i><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1ea1n c\u00f3 th\u1ec3 theo d\u00f5i c\u00e1c s\u1ef1 ki\u1ec7n DOM b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ch\u1ec9 th\u1ecb v-on:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;button v-on:click=\"increment\"&gt;{{ count }}&lt;\/button&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Do \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng th\u01b0\u1eddng xuy\u00ean, v-on c\u0169ng c\u00f3 c\u00fa ph\u00e1p vi\u1ebft t\u1eaft:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;button @click=\"increment\"&gt;{{ count }}&lt;\/button&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Trong m\u00e3 code tr\u00ean, increment tham chi\u1ebfu \u0111\u1ebfn m\u1ed9t h\u00e0m \u0111\u01b0\u1ee3c khai b\u00e1o trong &lt;script setup&gt;:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const count = ref(0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function increment() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ c\u1eadp nh\u1eadt tr\u1ea1ng th\u00e1i th\u00e0nh ph\u1ea7n<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0count.value++<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">B\u00ean trong h\u00e0m, b\u1ea1n c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt tr\u1ea1ng th\u00e1i c\u1ee7a th\u00e0nh ph\u1ea7n b\u1eb1ng c\u00e1ch \u0111\u1ed9t bi\u1ebfn c\u00e1c ref. Ngo\u00e0i ra, c\u00e1c tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00e1c bi\u1ec3u th\u1ee9c n\u1ed9i tuy\u1ebfn v\u00e0 c\u00f3 th\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a c\u00e1c t\u00e1c v\u1ee5 th\u00f4ng th\u01b0\u1eddng b\u1eb1ng c\u00e1c b\u1ed9 s\u1eeda \u0111\u1ed5i.\u00a0<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh:<\/b><span style=\"font-weight: 400;\"> H\u00e3y th\u1eed th\u1ef1c hi\u1ec7n h\u00e0m increment v\u00e0 li\u00ean k\u1ebft n\u00f3 v\u1edbi n\u00fat b\u1eb1ng v-on.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const count = ref(0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;!-- make this button work --&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button&gt;Count is: {{ count }}&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const count = ref(0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function increment() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0count.value++<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button @click=\"increment\"&gt;Count is: {{ count }}&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Form Bindings (R\u00e0ng bu\u1ed9c bi\u1ec3u m\u1eabu)<\/b><i><\/i><\/h3>\n<p><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng v-bind v\u00e0 v-on \u0111\u1ed3ng th\u1eddi, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o li\u00ean k\u1ebft hai chi\u1ec1u c\u00e1c ph\u1ea7n t\u1eed nh\u1eadp li\u1ec7u c\u1ee7a bi\u1ec3u m\u1eabu:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;input :value=\"text\" @input=\"onInput\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">- - - - -\u00a0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function onInput(e) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ Tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n v-on nh\u1eadn s\u1ef1 ki\u1ec7n DOM g\u1ed1c<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ l\u00e0m \u0111\u1ed1i s\u1ed1.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0text.value = e.target.value;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">H\u00e3y th\u1eed nh\u1eadp v\u00e0o h\u1ed9p nh\u1eadp (input box), b\u1ea1n s\u1ebd th\u1ea5y v\u0103n b\u1ea3n trong &lt;p&gt; c\u1eadp nh\u1eadt khi b\u1ea1n g\u00f5.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u01a1n gi\u1ea3n h\u00f3a li\u00ean k\u1ebft hai chi\u1ec1u, Vue cung c\u1ea5p ch\u1ec9 th\u1ecb v-model: <\/span><span style=\"font-weight: 400;\">&lt;input v-model=&#8221;text&#8221;&gt;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">v-model t\u1ef1 \u0111\u1ed9ng \u0111\u1ed3ng b\u1ed9 h\u00f3a gi\u00e1 tr\u1ecb c\u1ee7a &lt;input&gt; v\u1edbi tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c r\u00e0ng bu\u1ed9c. Do \u0111\u00f3, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n cho vi\u1ec7c \u0111\u00f3 n\u1eefa. v-model kh\u00f4ng ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c \u00f4 nh\u1eadp v\u0103n b\u1ea3n m\u00e0 c\u00f2n ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c lo\u1ea1i nh\u1eadp li\u1ec7u kh\u00e1c nh\u01b0 h\u1ed9p ki\u1ec3m, radio buttons v\u00e0 sellects dropdown.\u00a0<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh:<\/b><span style=\"font-weight: 400;\"> H\u00e3y th\u1eed c\u1ea5u tr\u00fac l\u1ea1i m\u00e3 \u0111\u1ec3 s\u1eed d\u1ee5ng v-model thay th\u1ebf.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const text = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function onInput(e) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0text.value = e.target.value<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;input :value=\"text\" @input=\"onInput\" placeholder=\"Type here\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;{{ text }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const text = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;input v-model=\"text\" placeholder=\"Type here\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;{{ text }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Conditional Rendering (Hi\u1ec3n th\u1ecb c\u00f3 \u0111i\u1ec1u ki\u1ec7n)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ec9 th\u1ecb v-if \u0111\u1ec3 k\u1ebft xu\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n m\u1ed9t ph\u1ea7n t\u1eed:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;h1 v-if=\"h\u1eefu \u00edch\"&gt;B\u00e0i vi\u1ebft n\u00e0y r\u1ea5t hay!&lt;\/h1&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">&lt;h1&gt; n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c k\u1ebft xu\u1ea5t ch\u1ec9 khi gi\u00e1 tr\u1ecb c\u1ee7a awesome l\u00e0 \u0111\u00fang. N\u1ebfu awesome thay \u0111\u1ed5i th\u00e0nh m\u1ed9t gi\u00e1 tr\u1ecb sai, n\u00f3 s\u1ebd b\u1ecb x\u00f3a kh\u1ecfi DOM.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng v-else v\u00e0 v-else-if \u0111\u1ec3 bi\u1ec3u th\u1ecb c\u00e1c nh\u00e1nh kh\u00e1c c\u1ee7a \u0111i\u1ec1u ki\u1ec7n:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;h1 v-if=\"h\u1eefu \u00edch\"&gt;B\u00e0i vi\u1ebft n\u00e0y r\u1ea5t hay!&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 v-else&gt;\u0110\u00fang l\u00e0 nh\u01b0 v\u1eady \ud83d\ude00&lt;\/h1&gt;<\/span><\/pre>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u1eed th\u00eam c\u00e1c ch\u1ec9 th\u1ecb v-if v\u00e0 v-else v\u00e0 tri\u1ec3n khai ph\u01b0\u01a1ng th\u1ee9c toggle() \u0111\u1ec3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00fat chuy\u1ec3n \u0111\u1ed5i gi\u1eefa ch\u00fang.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const awesome = ref(true)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function toggle() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ ...<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;button @click=\"toggle\"&gt;Toggle&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 v-if=\"awesome\"&gt;B\u00e0i vi\u1ebft n\u00e0y r\u1ea5t hay!&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 v-else&gt;\u0110\u00fang l\u00e0 nh\u01b0 v\u1eady \ud83d\ude00&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const awesome = ref(true)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function toggle() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0awesome.value = !awesome.value<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;button @click=\"toggle\"&gt;Toggle&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 v-if=\"awesome\"&gt;B\u00e0i vi\u1ebft n\u00e0y r\u1ea5t hay!&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;h1 v-else&gt;\u0110\u00fang l\u00e0 nh\u01b0 v\u1eady \ud83d\ude00&lt;\/h1&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>List Rendering (Hi\u1ec3n th\u1ecb danh s\u00e1ch)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ch\u1ec9 th\u1ecb v-for \u0111\u1ec3 hi\u1ec3n th\u1ecb danh s\u00e1ch c\u00e1c ph\u1ea7n t\u1eed d\u1ef1a tr\u00ean m\u1ed9t m\u1ea3ng ngu\u1ed3n:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;li v-for=\"todo in todos\" :key=\"todo.id\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0{{ todo.text }}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/li&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/ul&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Trong \u0111o\u1ea1n code tr\u00ean, todo l\u00e0 m\u1ed9t bi\u1ebfn c\u1ee5c \u0111\u1ea1i di\u1ec7n cho ph\u1ea7n t\u1eed c\u1ee7a m\u1ea3ng \u0111ang \u0111\u01b0\u1ee3c l\u1eb7p. Bi\u1ebfn n\u00e0y ch\u1ec9 c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c b\u00ean trong ho\u1eb7c tr\u00ean ph\u1ea7n t\u1eed v-for, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ph\u1ea1m vi c\u1ee7a m\u1ed9t h\u00e0m.<\/span><\/p>\n<p><b>L\u01b0u \u00fd:<\/b><span style=\"font-weight: 400;\"> B\u1ea1n ch\u1ec9 cung c\u1ea5p cho m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng todo m\u1ed9t id duy nh\u1ea5t v\u00e0 r\u00e0ng bu\u1ed9c n\u00f3 l\u00e0m thu\u1ed9c t\u00ednh key \u0111\u1eb7c bi\u1ec7t cho m\u1ed7i th\u1ebb &lt;li&gt;. Thu\u1ed9c t\u00ednh key cho ph\u00e9p Vue di chuy\u1ec3n ch\u00ednh x\u00e1c t\u1eebng th\u1ebb &lt;li&gt; \u0111\u1ec3 kh\u1edbp v\u1edbi v\u1ecb tr\u00ed c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng t\u01b0\u01a1ng \u1ee9ng trong m\u1ea3ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00f3 hai c\u00e1ch \u0111\u1ec3 c\u1eadp nh\u1eadt danh s\u00e1ch:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">G\u1ecdi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c thay \u0111\u1ed5i d\u1eef li\u1ec7u tr\u00ean m\u1ea3ng ngu\u1ed3n: <\/span><span style=\"font-weight: 400;\">todos.value.push(newTodo)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thay th\u1ebf m\u1ea3ng b\u1eb1ng m\u1ed9t m\u1ea3ng m\u1edbi: <\/span><span style=\"font-weight: 400;\">todos.value = todos.value.filter(\/* &#8230; *\/)<\/span><\/li>\n<\/ol>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">B\u1ea1n \u0111ang c\u00f3 m\u1ed9t danh s\u00e1ch vi\u1ec7c \u0111\u01a1n gi\u1ea3n, h\u00e3y th\u1eed tri\u1ec3n khai logic cho c\u00e1c ph\u01b0\u01a1ng th\u1ee9c addTodo() v\u00e0 removeTodo() \u0111\u1ec3 n\u00f3 ho\u1ea1t \u0111\u1ed9ng.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ give each todo a unique id<\/span>\r\n\r\n<span style=\"font-weight: 400;\">let id = 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const newTodo = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todos = ref([<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn HTML' },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn JavaScript' },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn Vue' }<\/span>\r\n\r\n<span style=\"font-weight: 400;\">])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function addTodo() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ ...<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0newTodo.value = ''<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function removeTodo(todo) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ ...<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;form @submit.prevent=\"addTodo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;input v-model=\"newTodo\" required placeholder=\"new todo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;button&gt;Add Todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/form&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;li v-for=\"todo in todos\" :key=\"todo.id\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{{ todo.text }}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;button @click=\"removeTodo(todo)\"&gt;X&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;\/li&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ give each todo a unique id<\/span>\r\n\r\n<span style=\"font-weight: 400;\">let id = 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const newTodo = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todos = ref([<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn HTML' },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn JavaScript' },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn Vue' }<\/span>\r\n\r\n<span style=\"font-weight: 400;\">])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function addTodo() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value.push({ id: id++, text: newTodo.value })<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0newTodo.value = ''<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function removeTodo(todo) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value = todos.value.filter((t) =&gt; t !== todo)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;form @submit.prevent=\"addTodo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;input v-model=\"newTodo\" required placeholder=\"new todo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;button&gt;Add Todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/form&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;li v-for=\"todo in todos\" :key=\"todo.id\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{{ todo.text }}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;button @click=\"removeTodo(todo)\"&gt;X&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;\/li&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b style=\"font-family: Arial, 'Times New Roman', 'Bitstream Charter', Times, serif;\">Computed Property (Thu\u1ed9c t\u00ednh \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">H\u00e3y ti\u1ebfp t\u1ee5c x\u00e2y d\u1ef1ng tr\u00ean danh s\u00e1ch vi\u1ec7c c\u1ea7n l\u00e0m \u1edf v\u00ed d\u1ee5 b\u00ean tr\u00ean. Gi\u1ea3 s\u1eed, b\u1ea1n \u0111\u00e3 th\u00eam m\u1ed9t ch\u1ee9c n\u0103ng chuy\u1ec3n \u0111\u1ed5i cho m\u1ed7i vi\u1ec7c c\u1ea7n l\u00e0m, b\u1eb1ng c\u00e1ch th\u00eam thu\u1ed9c t\u00ednh done cho m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng vi\u1ec7c c\u1ea7n l\u00e0m v\u00e0 s\u1eed d\u1ee5ng v-model \u0111\u1ec3 li\u00ean k\u1ebft n\u00f3 v\u1edbi m\u1ed9t h\u1ed9p ki\u1ec3m:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;li v-for=\"todo in todos\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;input type=\"checkbox\" v-model=\"todo.done\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u2026<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/li&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">C\u1eadp nh\u1eadt ti\u1ebfp theo cho v\u00ed d\u1ee5 b\u00ean tr\u00ean l\u00e0 kh\u1ea3 n\u0103ng \u1ea9n c\u00e1c vi\u1ec7c c\u1ea7n l\u00e0m \u0111\u00e3 ho\u00e0n th\u00e0nh v\u1edbi n\u00fat chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i hideCompleted. Khi n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng computed() \u0111\u1ec3 t\u1ea1o m\u1ed9t ref t\u00ednh to\u00e1n .value d\u1ef1a tr\u00ean c\u00e1c ngu\u1ed3n d\u1eef li\u1ec7u ph\u1ea3n \u1ee9ng kh\u00e1c:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import { ref, computed } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const hideCompleted = ref(false)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todos = ref([<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/* ... *\/<\/span>\r\n\r\n<span style=\"font-weight: 400;\">])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const filteredTodos = computed(() =&gt; {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ return filtered todos based on<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ `todos.value` &amp; `hideCompleted.value`<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n\r\n<span style=\"font-weight: 400;\">- - - - -<\/span>\r\n\r\n<span style=\"font-weight: 400;\">- &lt;li v-for=\"todo in todos\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">+ &lt;li v-for=\"todo in filteredTodos\"&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">M\u1ed9t thu\u1ed9c t\u00ednh t\u00ednh to\u00e1n theo d\u00f5i c\u00e1c tr\u1ea1ng th\u00e1i ph\u1ea3n \u1ee9ng kh\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ph\u00e9p t\u00ednh c\u1ee7a n\u00f3 d\u01b0\u1edbi d\u1ea1ng ph\u1ee5 thu\u1ed9c. N\u00f3 l\u01b0u tr\u1eef k\u1ebft qu\u1ea3 v\u00e0 t\u1ef1 \u0111\u1ed9ng c\u1eadp nh\u1eadt khi c\u00e1c ph\u1ee5 thu\u1ed9c c\u1ee7a n\u00f3 thay \u0111\u1ed5i.<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u00eam thu\u1ed9c t\u00ednh t\u00ednh to\u00e1n filteredTodos v\u00e0 tri\u1ec3n khai logic t\u00ednh to\u00e1n \u0111\u1ec3 ch\u1ecdn m\u1ed9t vi\u1ec7c c\u1ea7n l\u00e0m khi \u1ea9n c\u00e1c m\u1ee5c \u0111\u00e3 ho\u00e0n th\u00e0nh s\u1ebd ngay l\u1eadp t\u1ee9c \u1ea9n n\u00f3.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">let id = 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const newTodo = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const hideCompleted = ref(false)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todos = ref([<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn HTML', done: true },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn JavaScript', done: true },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn Vue', done: false }<\/span>\r\n\r\n<span style=\"font-weight: 400;\">])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function addTodo() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value.push({ id: id++, text: newTodo.value, done: false })<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0newTodo.value = ''<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function removeTodo(todo) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value = todos.value.filter((t) =&gt; t !== todo)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;form @submit.prevent=\"addTodo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;input v-model=\"newTodo\" required placeholder=\"new todo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;button&gt;Add Todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/form&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;li v-for=\"todo in todos\" :key=\"todo.id\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;input type=\"checkbox\" v-model=\"todo.done\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;span :class=\"{ done: todo.done }\"&gt;{{ todo.text }}&lt;\/span&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;button @click=\"removeTodo(todo)\"&gt;X&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;\/li&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button @click=\"hideCompleted = !hideCompleted\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0{{ hideCompleted ? 'Show all' : 'Hide completed' }}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;style&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">.done {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0text-decoration: line-through;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/style&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref, computed } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">let id = 0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const newTodo = ref('')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const hideCompleted = ref(false)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todos = ref([<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn HTML', done: true },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn JavaScript', done: true },<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0{ id: id++, text: 'Learn Vue', done: false }<\/span>\r\n\r\n<span style=\"font-weight: 400;\">])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const filteredTodos = computed(() =&gt; {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0return hideCompleted.value<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0? todos.value.filter((t) =&gt; !t.done)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0: todos.value<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function addTodo() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value.push({ id: id++, text: newTodo.value, done: false })<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0newTodo.value = ''<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">function removeTodo(todo) {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todos.value = todos.value.filter((t) =&gt; t !== todo)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;form @submit.prevent=\"addTodo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;input v-model=\"newTodo\" required placeholder=\"new todo\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;button&gt;Add Todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/form&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;li v-for=\"todo in filteredTodos\" :key=\"todo.id\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;input type=\"checkbox\" v-model=\"todo.done\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;span :class=\"{ done: todo.done }\"&gt;{{ todo.text }}&lt;\/span&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;button @click=\"removeTodo(todo)\"&gt;X&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&lt;\/li&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/ul&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button @click=\"hideCompleted = !hideCompleted\"&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0{{ hideCompleted ? 'Show all' : 'Hide completed' }}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;style&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">.done {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0text-decoration: line-through;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/style&gt;<\/span><\/pre>\n<h3><b>Lifecycle and Template Refs (V\u00f2ng \u0111\u1eddi v\u00e0 tham chi\u1ebfu m\u1eabu)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Cho \u0111\u1ebfn nay, Vue \u0111\u00e3 x\u1eed l\u00fd t\u1ea5t c\u1ea3 c\u1eadp nh\u1eadt DOM, nh\u1edd v\u00e0o t\u00ednh ph\u1ea3n \u1ee9ng v\u00e0 k\u1ebft xu\u1ea5t khai b\u00e1o. Tuy nhi\u00ean, v\u1eabn s\u1ebd c\u00f3 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p b\u1ea1n c\u1ea7n ph\u1ea3i thao t\u00e1c th\u1ee7 c\u00f4ng v\u1edbi DOM. B\u1ea1n c\u00f3 th\u1ec3 y\u00eau c\u1ea7u m\u1ed9t ref m\u1eabu &#8211; t\u1ee9c l\u00e0 m\u1ed9t tham chi\u1ebfu \u0111\u1ebfn ph\u1ea7n t\u1eed trong m\u1eabu b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng thu\u1ed9c t\u00ednh \u0111\u1eb7c bi\u1ec7t ref:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;p ref=\"pElementRef\"&gt;hello&lt;\/p&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 truy c\u1eadp ref, b\u1ea1n c\u1ea7n khai b\u00e1o m\u1ed9t ref c\u00f3 t\u00ean tr\u00f9ng kh\u1edbp: <\/span><span style=\"font-weight: 400;\">const pElementRef = ref(null)<\/span><\/p>\n<p><b>L\u01b0u \u00fd:<\/b><span style=\"font-weight: 400;\"> ref \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o v\u1edbi gi\u00e1 tr\u1ecb null. \u0110i\u1ec1u n\u00e0y l\u00e0 do ph\u1ea7n t\u1eed ch\u01b0a t\u1ed3n t\u1ea1i khi &lt;script setup&gt; \u0111\u01b0\u1ee3c th\u1ef1c thi. Ref m\u1eabu ch\u1ec9 c\u00f3 th\u1ec3 truy c\u1eadp \u0111\u01b0\u1ee3c sau khi th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c g\u1eafn k\u1ebft.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 ch\u1ea1y m\u00e3 sau khi g\u1eafn k\u1ebft, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u00e0m onMounted():<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import { onMounted } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">onMounted(() =&gt; {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ component is now mounted.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">\u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1ed9t hook v\u00f2ng \u0111\u1eddi (lifecycle hook), n\u00f3 cho ph\u00e9p\u00a0 b\u1ea1n \u0111\u0103ng k\u00fd m\u1ed9t h\u00e0m g\u1ecdi l\u1ea1i \u0111\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi v\u00e0o nh\u1eefng th\u1eddi \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh c\u1ee7a v\u00f2ng \u0111\u1eddi th\u00e0nh ph\u1ea7n. C\u00f3 c\u00e1c hook kh\u00e1c nh\u01b0 onUpdated v\u00e0 onUnmounted.\u00a0<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u00eam m\u1ed9t onMounted hook, truy c\u1eadp &lt;p&gt; th\u00f4ng qua pElementRef.value v\u00e0 th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 thao t\u00e1c DOM tr\u1ef1c ti\u1ebfp tr\u00ean n\u00f3 (v\u00ed d\u1ee5: thay \u0111\u1ed5i textContent).<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const pElementRef = ref(null)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p ref=\"pElementRef\"&gt;Hello&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref, onMounted } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const pElementRef = ref(null)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">onMounted(() =&gt; {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0pElementRef.value.textContent = 'mounted!'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p ref=\"pElementRef\"&gt;Hello&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Watcher (Ng\u01b0\u1eddi theo d\u00f5i)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Th\u1ec9nh tho\u1ea3ng, b\u1ea1n c\u00f3 th\u1ec3 c\u1ea7n th\u1ef1c hi\u1ec7n c\u00e1c ph\u1ea3n \u1ee9ng &#8220;side effects&#8221;. V\u00ed d\u1ee5, ghi m\u1ed9t s\u1ed1 v\u00e0o b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n khi n\u00f3 thay \u0111\u1ed5i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng watchers:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import { ref, watch } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const count = ref(0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">watch(count, (newCount) =&gt; {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0\/\/ yes, console.log() is a side effect<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0console.log(`new count is: ${newCount}`)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">watch() c\u00f3 th\u1ec3 tr\u1ef1c ti\u1ebfp theo d\u00f5i m\u1ed9t ref v\u00e0 h\u00e0m g\u1ecdi l\u1ea1i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1ea5t c\u1ee9 khi n\u00e0o gi\u00e1 tr\u1ecb c\u1ee7a count thay \u0111\u1ed5i.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1ed9t v\u00ed d\u1ee5 kh\u00e1c v\u1ec1 watcher l\u00e0 l\u1ea5y d\u1eef li\u1ec7u m\u1edbi khi ID thay \u0111\u1ed5i. \u0110o\u1ea1n code m\u00e0 b\u1ea1n c\u00f3 \u0111ang l\u1ea5y d\u1eef li\u1ec7u vi\u1ec7c c\u1ea7n l\u00e0m t\u1eeb m\u1ed9t API m\u00f4 ph\u1ecfng khi th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c g\u1eafn k\u1ebft. Ngo\u00e0i ra c\u00f2n c\u00f3 m\u1ed9t n\u00fat t\u0103ng ID vi\u1ec7c c\u1ea7n l\u00e0m c\u1ea7n \u0111\u01b0\u1ee3c l\u1ea5y.\u00a0<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u1eed tri\u1ec3n khai m\u1ed9t watcher \u0111\u1ec3 l\u1ea5y vi\u1ec7c c\u1ea7n l\u00e0m m\u1edbi khi n\u00fat \u0111\u01b0\u1ee3c nh\u1ea5p.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todoId = ref(1)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todoData = ref(null)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">async function fetchData() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todoData.value = null<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const res = await fetch(`https:\/\/jsonplaceholder.typicode.com\/todos\/${todoId.value}`<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todoData.value = await res.json()<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">fetchData()<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;Todo id: {{ todoId }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button @click=\"todoId++\" :disabled=\"!todoData\"&gt;Fetch next todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p v-if=\"!todoData\"&gt;Loading...&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;pre v-else&gt;{{ todoData }}&lt;\/pre&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref, watch } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todoId = ref(1)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const todoData = ref(null)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">async function fetchData() {<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todoData.value = null<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0const res = await fetch(`https:\/\/jsonplaceholder.typicode.com\/todos\/${todoId.value}`<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0todoData.value = await res.json()<\/span>\r\n\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n\r\n<span style=\"font-weight: 400;\">fetchData()<\/span>\r\n\r\n<span style=\"font-weight: 400;\">watch(todoId, fetchData)<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;Todo id: {{ todoId }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;button @click=\"todoId++\" :disabled=\"!todoData\"&gt;Fetch next todo&lt;\/button&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p v-if=\"!todoData\"&gt;Loading...&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;pre v-else&gt;{{ todoData }}&lt;\/pre&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Component (Th\u00e0nh ph\u1ea7n)<\/b><i><\/i><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1eeb nh\u1eefng v\u00ed d\u1ee5 tr\u01b0\u1edbc, b\u1ea1n m\u1edbi ch\u1ec9 l\u00e0m vi\u1ec7c v\u1edbi m\u1ed9t th\u00e0nh ph\u1ea7n duy nh\u1ea5t. Trong khi \u0111\u00f3, c\u00e1c \u1ee9ng d\u1ee5ng Vue th\u1ef1c t\u1ebf th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o ra v\u1edbi nhi\u1ec1u th\u00e0nh ph\u1ea7n l\u1ed3ng v\u00e0o nhau.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1ed9t th\u00e0nh ph\u1ea7n cha c\u00f3 th\u1ec3 k\u1ebft xu\u1ea5t m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00e1c trong m\u1eabu c\u1ee7a n\u00f3 d\u01b0\u1edbi d\u1ea1ng th\u00e0nh ph\u1ea7n con. \u0110\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t th\u00e0nh ph\u1ea7n con, tr\u01b0\u1edbc ti\u00ean b\u1ea1n c\u1ea7n nh\u1eadp n\u00f3:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Sau \u0111\u00f3, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u00e0nh ph\u1ea7n trong m\u1eabu nh\u01b0: <\/span><span style=\"font-weight: 400;\">&lt;ChildComp \/&gt;<\/span><\/p>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u1eed nh\u1eadp th\u00e0nh ph\u1ea7n con v\u00e0 k\u1ebft xu\u1ea5t n\u00f3 trong m\u1eabu.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;!-- render child component --&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp \/&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Props (\u0110\u1ea1o c\u1ee5)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t th\u00e0nh ph\u1ea7n con c\u00f3 th\u1ec3 nh\u1eadn d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o t\u1eeb th\u00e0nh ph\u1ea7n cha th\u00f4ng qua props. \u0110\u1ea7u ti\u00ean, n\u00f3 c\u1ea7n khai b\u00e1o c\u00e1c props m\u00e0 n\u00f3 ch\u1ea5p nh\u1eadn:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const props = defineProps({<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0msg: String<\/span>\r\n\r\n<span style=\"font-weight: 400;\">})<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/pre>\n<p><b>L\u01b0u \u00fd:<\/b><span style=\"font-weight: 400;\"> defineProps() l\u00e0 m\u1ed9t macro th\u1eddi gian bi\u00ean d\u1ecbch v\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c nh\u1eadp. Sau khi \u0111\u01b0\u1ee3c khai b\u00e1o, prop msg c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1eabu c\u1ee7a th\u00e0nh ph\u1ea7n con. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c truy c\u1eadp trong JavaScript th\u00f4ng qua \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 c\u1ee7a defineProps().<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Th\u00e0nh ph\u1ea7n cha c\u00f3 th\u1ec3 truy\u1ec1n prop cho th\u00e0nh ph\u1ea7n con gi\u1ed1ng nh\u01b0 c\u00e1c thu\u1ed9c t\u00ednh. \u0110\u1ec3 truy\u1ec1n m\u1ed9t gi\u00e1 tr\u1ecb \u0111\u1ed9ng, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00fa ph\u00e1p v-bind:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;ChildComp :msg=\"greeting\" \/&gt;<\/span><\/pre>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u1eed n\u00f3 trong tr\u00ecnh ch\u1ec9nh s\u1eeda.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const greeting = ref('Hello from parent')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp \/&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const greeting = ref('Hello from parent')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp :msg=\"greeting\" \/&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Emits<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Ngo\u00e0i vi\u1ec7c nh\u1eadn props, m\u1ed9t th\u00e0nh ph\u1ea7n con c\u0169ng c\u00f3 th\u1ec3 ph\u00e1t ra s\u1ef1 ki\u1ec7n t\u1edbi th\u00e0nh ph\u1ea7n cha:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ declare emitted events<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const emit = defineEmits(['response'])<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\/\/ emit with argument<\/span>\r\n\r\n<span style=\"font-weight: 400;\">emit('response', 'hello from child')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i s\u1ed1 \u0111\u1ea7u ti\u00ean c\u1ee7a emit() l\u00e0 t\u00ean s\u1ef1 ki\u1ec7n. B\u1ea5t k\u1ef3 \u0111\u1ed1i s\u1ed1 b\u1ed5 sung n\u00e0o c\u0169ng \u0111\u01b0\u1ee3c truy\u1ec1n cho tr\u00ecnh Event Listener.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Th\u00e0nh ph\u1ea7n cha c\u00f3 th\u1ec3 l\u1eafng nghe c\u00e1c s\u1ef1 ki\u1ec7n \u0111\u01b0\u1ee3c ph\u00e1t ra c\u1ee7a con b\u1eb1ng v-on, c\u00f3 ngh\u0129a l\u00e0 tr\u00ecnh x\u1eed l\u00fd nh\u1eadn \u0111\u1ed1i s\u1ed1 b\u1ed5 sung t\u1eeb cu\u1ed9c g\u1ecdi ph\u00e1t ra t\u1eeb con v\u00e0 g\u00e1n n\u00f3 cho tr\u1ea1ng th\u00e1i c\u1ee5c b\u1ed9:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;ChildComp @response=\"(msg) =&gt; childMsg = msg\" \/&gt;<\/span><\/pre>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">H\u00e3y th\u1eed n\u00f3 trong tr\u00ecnh ch\u1ec9nh s\u1eeda.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const childMsg = ref('No child msg yet')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp \/&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;{{ childMsg }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const childMsg = ref('No child msg yet')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp @response=\"(msg) =&gt; childMsg = msg\" \/&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;p&gt;{{ childMsg }}&lt;\/p&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h3><b>Slots<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Ngo\u00e0i vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u qua props, th\u00e0nh ph\u1ea7n cha c\u0169ng c\u00f3 th\u1ec3 truy\u1ec1n c\u00e1c \u0111o\u1ea1n m\u00e3 m\u1eabu xu\u1ed1ng cho con th\u00f4ng qua slots:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;ChildComp&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0This is some slot content!<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/ChildComp&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">Trong th\u00e0nh ph\u1ea7n con, n\u00f3 c\u00f3 th\u1ec3 k\u1ebft xu\u1ea5t n\u1ed9i dung slot t\u1eeb th\u00e0nh ph\u1ea7n cha b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ph\u1ea7n t\u1eed &lt;slot&gt; l\u00e0m c\u1eeda kh\u1ea9u:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;!-- in child template --&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;slot\/&gt;<\/span><\/pre>\n<p><span style=\"font-weight: 400;\">N\u1ed9i dung b\u00ean trong c\u1eeda kh\u1ea9u &lt;slot&gt; s\u1ebd \u0111\u01b0\u1ee3c coi l\u00e0 n\u1ed9i dung &#8220;d\u1ef1 ph\u00f2ng&#8221;, n\u00f3 s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb n\u1ebfu th\u00e0nh ph\u1ea7n cha kh\u00f4ng truy\u1ec1n b\u1ea5t k\u1ef3 n\u1ed9i dung slot n\u00e0o:<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">&lt;slot&gt;Fallback content&lt;\/slot&gt;<\/span><\/pre>\n<p><b>B\u00e0i t\u1eadp th\u1ef1c h\u00e0nh: <\/b><span style=\"font-weight: 400;\">Hi\u1ec7n t\u1ea1i b\u1ea1n kh\u00f4ng truy\u1ec1n b\u1ea5t k\u1ef3 n\u1ed9i dung slot n\u00e0o cho &lt;ChildComp&gt; n\u00ean b\u1ea1n s\u1ebd th\u1ea5y n\u1ed9i dung d\u1ef1 ph\u00f2ng. H\u00e3y cung c\u1ea5p m\u1ed9t s\u1ed1 n\u1ed9i dung slot cho th\u00e0nh ph\u1ea7n con trong khi s\u1eed d\u1ee5ng tr\u1ea1ng th\u00e1i msg c\u1ee7a th\u00e0nh ph\u1ea7n cha.<\/span><\/p>\n<p>\u0110\u1ec1 b\u00e0i:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const msg = ref('from parent')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp&gt;&lt;\/ChildComp&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<pre><span style=\"font-weight: 400;\">&lt;script setup&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import { ref } from 'vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">import ChildComp from '.\/ChildComp.vue'<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const msg = ref('from parent')<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/script&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;template&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">\u00a0\u00a0&lt;ChildComp&gt;Message: {{ msg }}&lt;\/ChildComp&gt;<\/span>\r\n\r\n<span style=\"font-weight: 400;\">&lt;\/template&gt;<\/span><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Cac_cau_hoi_thuong_gap_ve_VueJS_tutorial\"><\/span><b>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 VueJS tutorial<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a Vue.js l\u00e0 g\u00ec?<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u1ee8ng d\u1ee5ng \u0111\u01a1n trang (SPAs):<\/b><span style=\"font-weight: 400;\"> Vue.js l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn tuy\u1ec7t v\u1eddi \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c SPAs \u0111\u1ed9ng v\u00e0 t\u01b0\u01a1ng t\u00e1c. T\u00ednh ch\u1ea5t nh\u1eb9 v\u00e0 ph\u1ea3n \u1ee9ng nhanh c\u1ee7a n\u00f3 r\u1ea5t l\u00fd t\u01b0\u1edfng \u0111\u1ec3 x\u1eed l\u00fd c\u1ee7a UI ph\u1ee9c t\u1ea1p.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (UI):<\/b><span style=\"font-weight: 400;\"> Vue.js \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn \u0111\u1ec3 t\u1ea1o ra c\u00e1c UI h\u1ea5p d\u1eabn v\u00e0 ph\u1ea3n h\u1ed3i nhanh. C\u00e1ch ti\u1ebfp c\u1eadn d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n c\u1ee7a n\u00f3 gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c ph\u00e1t tri\u1ec3n UI.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1eadp nh\u1eadt th\u1eddi gian th\u1ef1c: <\/b><span style=\"font-weight: 400;\">Vue.js h\u1ed7 tr\u1ee3 c\u1eadp nh\u1eadt d\u1eef li\u1ec7u th\u1eddi gian th\u1ef1c, l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng y\u00eau c\u1ea7u \u0111\u1ed3ng b\u1ed9 h\u00f3a d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Nguy\u00ean m\u1eabu<\/b><span style=\"font-weight: 400;\">: Do t\u00ednh \u0111\u01a1n gi\u1ea3n v\u00e0 linh ho\u1ea1t, Vue.js ho\u00e0n h\u1ea3o \u0111\u1ec3 t\u1ea1o nguy\u00ean m\u1eabu nhanh ch\u00f3ng c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng web.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ph\u00e1t tri\u1ec3n \u0111a n\u1ec1n t\u1ea3ng:<\/b><span style=\"font-weight: 400;\"> Cho d\u00f9 b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng web, di \u0111\u1ed9ng hay m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n, Vue.js c\u00f3 th\u1ec3 th\u00edch nghi v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng kh\u00e1c nhau m\u1ed9t c\u00e1ch li\u1ec1n m\u1ea1ch.<\/span><\/li>\n<\/ul>\n<h3><b>C\u00e1c kh\u00e1i ni\u1ec7m c\u1ed1t l\u00f5i c\u1ee7a Vue.js<\/b><i><\/i><\/h3>\n<p><span style=\"font-weight: 400;\">Khi b\u1ea1n \u0111\u00e3 hi\u1ec3u c\u01a1 b\u1ea3n v\u1ec1 c\u00e1ch thi\u1ebft l\u1eadp Vue.js, h\u00e3y t\u00ecm hi\u1ec3u th\u00eam m\u1ed9t s\u1ed1 kh\u00e1i ni\u1ec7m c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng web t\u01b0\u01a1ng t\u00e1c:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Templates<\/b><span style=\"font-weight: 400;\">: Vue.js s\u1eed d\u1ee5ng c\u00e1c templates gi\u1ed1ng HTML \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. C\u00e1c templates n\u00e0y bao g\u1ed3m c\u00e1c bi\u1ec3u th\u1ee9c \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 d\u1ef1a tr\u00ean d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1eef li\u1ec7u<\/b><span style=\"font-weight: 400;\">: D\u1eef li\u1ec7u trong \u1ee9ng d\u1ee5ng Vue.js th\u01b0\u1eddng l\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ch\u1ee9a c\u00e1c thu\u1ed9c t\u00ednh \u0111\u1ea1i di\u1ec7n cho tr\u1ea1ng th\u00e1i c\u1ee7a \u1ee9ng d\u1ee5ng. Thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi d\u1eef li\u1ec7u n\u00e0y s\u1ebd t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t c\u1eadp nh\u1eadt giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Reactivity<\/b><span style=\"font-weight: 400;\">: Vue.js s\u1eed d\u1ee5ng m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng theo d\u00f5i c\u00e1c thay \u0111\u1ed5i \u0111\u1ed1i v\u1edbi d\u1eef li\u1ec7u. B\u1ea5t c\u1ee9 khi n\u00e0o m\u1ed9t thu\u1ed9c t\u00ednh d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c s\u1eeda \u0111\u1ed5i, Vue.js s\u1ebd c\u1eadp nh\u1eadt c\u00e1c ph\u1ea7n t\u01b0\u01a1ng \u1ee9ng c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, \u0111\u1ea3m b\u1ea3o tr\u1ea3i nghi\u1ec7m ng\u01b0\u1eddi d\u00f9ng nh\u1ea5t qu\u00e1n v\u00e0 ph\u1ea3n h\u1ed3i nhanh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Computed Properties<\/b><span style=\"font-weight: 400;\">: L\u00e0 c\u00e1c gi\u00e1 tr\u1ecb \u0111\u01b0\u1ee3c suy ra d\u1ef1a tr\u00ean d\u1eef li\u1ec7u. Ch\u00fang l\u00fd t\u01b0\u1edfng cho c\u00e1c ph\u00e9p t\u00ednh ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i m\u00e0 b\u1ea1n kh\u00f4ng mu\u1ed1n th\u1ef1c hi\u1ec7n trong templates ch\u00ednh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ph\u01b0\u01a1ng th\u1ee9c:<\/b><span style=\"font-weight: 400;\"> Ph\u01b0\u01a1ng th\u1ee9c l\u00e0 c\u00e1c h\u00e0m m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecbnh ngh\u0129a trong th\u00e0nh ph\u1ea7n Vue.js \u0111\u1ec3 x\u1eed l\u00fd t\u01b0\u01a1ng t\u00e1c c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c th\u1ef1c hi\u1ec7n c\u00e1c nhi\u1ec7m v\u1ee5 c\u1ee5 th\u1ec3. Ch\u00fang l\u00e0 c\u00e1c ph\u1ea7n logic c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi trong to\u00e0n b\u1ed9 \u1ee9ng d\u1ee5ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Components<\/b><span style=\"font-weight: 400;\">: L\u00e0 c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng m\u1ed9t ph\u1ea7n c\u1ee5 th\u1ec3 c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng v\u00e0 c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a n\u00f3. T\u0103ng hi\u1ec7u qu\u1ea3 t\u1ed5 ch\u1ee9c code, kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec v\u00e0 kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket_VueJS_tutorial\"><\/span><b>T\u1ed5ng k\u1ebft VueJS tutorial<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady trong b\u00e0i vi\u1ebft VueJS tutorial n\u00e0y, ITviec \u0111\u00e3 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch c\u1ee7a VueJS &#8211; Framework n\u1ed5i b\u1eadt c\u1ee7a JavaScript. Ngo\u00e0i c\u00e1c b\u00e0i t\u1eadp th\u1ef1c h\u00e0nh trong b\u00e0i vi\u1ebft, b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u nhi\u1ec1u b\u00e0i t\u1eadp t\u1eeb c\u00e1c ngu\u1ed3n kh\u00e1c \u0111\u1ec3 s\u1edbm th\u00e0nh th\u1ea1o nh\u1eefng t\u00ednh n\u0103ng n\u00e0y nh\u00e9.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>VueJS l\u00e0 framework \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t ph\u1ed5 bi\u1ebfn trong l\u1eadp tr\u00ecnh Frontend b\u1edfi nh\u1eefng t\u00ednh n\u0103ng ti\u1ec7n l\u1ee3i c\u1ee7a n\u00f3. Khi \u0111\u1ecbnh h\u01b0\u1edbng b\u1ea3n th\u00e2n tr\u1edf th\u00e0nh Frontend Developer hay Full-stack Developer, h\u00e3y trang b\u1ecb cho m\u00ecnh tr\u1ecdn b\u1ed9 b\u00ed k\u00edp \u201cVueJS tutorial\u201d m\u00e0 ITviec \u0111\u00e3 h\u01b0\u1edbng d\u1eabn chi ti\u1ebft trong b\u00e0i vi\u1ebft n\u00e0y [&hellip;]<\/p>\n","protected":false},"author":213,"featured_media":79555,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[109],"tags":[],"class_list":["post-79374","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chuyen-mon-it"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>VueJS Tutorial: H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng VueJS A-Z - ITviec Blog<\/title>\n<meta name=\"description\" content=\"VueJS l\u00e0 framework Frontend ph\u1ed5 bi\u1ebfn b\u1edfi nh\u1eefng t\u00ednh n\u0103ng ti\u1ec7n l\u1ee3i. H\u00e3y trang b\u1ecb tr\u1ecdn b\u1ed9 b\u00ed k\u00edp \u201cVueJS tutorial\u201d chi ti\u1ebft trong b\u00e0i vi\u1ebft n\u00e0y.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itviec.com\/blog\/huong-dan-su-dung-vuejs-tutorial\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VueJS Tutorial: H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng VueJS A-Z\" \/>\n<meta property=\"og:description\" content=\"VueJS l\u00e0 framework \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t ph\u1ed5 bi\u1ebfn trong l\u1eadp tr\u00ecnh Frontend b\u1edfi nh\u1eefng t\u00ednh n\u0103ng ti\u1ec7n l\u1ee3i c\u1ee7a n\u00f3. 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