{"id":82087,"date":"2024-11-29T11:59:15","date_gmt":"2024-11-29T04:59:15","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=82087"},"modified":"2024-11-29T11:59:15","modified_gmt":"2024-11-29T04:59:15","slug":"reactjs-la-gi","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/reactjs-la-gi\/","title":{"rendered":"ReactJS l\u00e0 g\u00ec: T\u00ednh n\u0103ng n\u1ed5i b\u1eadt, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 Lifecycle"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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\/reactjs-la-gi\/#ReactJS_la_gi\" >ReactJS l\u00e0 g\u00ec?<\/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\/reactjs-la-gi\/#Mot_so_tinh_nang_noi_bat_cua_ReactJS\" >M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a ReactJS<\/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\/reactjs-la-gi\/#Uu_va_nhuoc_diem_cua_thu_vien_Javascript_ReactJS_la_gi\" >\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u01b0 vi\u1ec7n Javascript ReactJS l\u00e0 g\u00ec?<\/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\/reactjs-la-gi\/#ReactJS_hoat_dong_nhu_the_nao\" >ReactJS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/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\/reactjs-la-gi\/#Lam_the_nao_de_su_dung_ReactJS\" >L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng ReactJS?<\/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\/reactjs-la-gi\/#So_sanh_ReactJS_va_cac_thu_vien_Javascript_khac\" >So s\u00e1nh ReactJS v\u00e0 c\u00e1c th\u01b0 vi\u1ec7n Javascript kh\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/itviec.com\/blog\/reactjs-la-gi\/#Lifecycle_ReactJS_la_gi\" >Lifecycle ReactJS l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/itviec.com\/blog\/reactjs-la-gi\/#Cau_hoi_thuong_gap_ve_ReactJS_la_gi\" >C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ReactJS l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/itviec.com\/blog\/reactjs-la-gi\/#Tong_ket_ReactJS_la_gi\" >T\u1ed5ng k\u1ebft ReactJS l\u00e0 g\u00ec<\/a><\/li><\/ul><\/nav><\/div>\n<p><strong><em>ReactJS l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n JavaScript ph\u1ed5 bi\u1ebfn v\u00e0 m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u01b0\u01a1ng t\u00e1c, ch\u1ee7 y\u1ebfu cho c\u00e1c \u1ee9ng d\u1ee5ng m\u1ed9t trang (SPA). \u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Facebook v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng k\u1ef9 thu\u1eadt k\u1ebft xu\u1ea5t hi\u1ec7u qu\u1ea3, v\u00e0 h\u1ed7 tr\u1ee3 t\u00edch c\u1ef1c cho ng\u01b0\u1eddi d\u00f9ng. B\u00e0i vi\u1ebft sau s\u1ebd gi\u00fap b\u1ea1n n\u1eafm v\u1eefng ReactJS l\u00e0 g\u00ec.<\/em><\/strong><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ecdc b\u00e0i vi\u1ebft sau \u0111\u00e2y \u0111\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3i \u0111\u00e1p chi ti\u1ebft h\u01a1n v\u1ec1:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ed5ng quan v\u1ec1 ReactJS bao g\u1ed3m ReactJS l\u00e0 g\u00ec, \u0111i\u1ec3m n\u1ed5i b\u1eadt v\u00e0 nh\u1eefng \u01b0u, nh\u01b0\u1ee3c \u0111i\u1ec3m<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1ch ReactJS ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 th\u1ebf n\u00e0o<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ReactJS c\u00f3 nh\u1eefng \u0111i\u1ec3m m\u1ea1nh n\u00e0o n\u1ed5i b\u1eadt h\u01a1n so v\u1edbi c\u00e1c th\u01b0 vi\u1ec7n Javascript kh\u00e1c<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lifecycle c\u1ee7a ReactJS<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">M\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 th\u01b0 vi\u1ec7n Javascript ReactJS<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"ReactJS_la_gi\"><\/span><b>ReactJS l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">ReactJS<\/span><span style=\"font-weight: 400;\">\u00a0l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n <\/span><a href=\"https:\/\/itviec.com\/blog\/javascript-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">JavaScript<\/span><\/a><span style=\"font-weight: 400;\"> m\u00e3 ngu\u1ed3n m\u1edf \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (UI) cho website. ReactJS l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n d\u1ef1a tr\u00ean components, khai b\u00e1o cho ph\u00e9p l\u1eadp tr\u00ecnh vi\u00ean x\u00e2y d\u1ef1ng UI component c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng v\u00e0 tu\u00e2n theo ph\u01b0\u01a1ng ph\u00e1p Virtual DOM. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t render b\u1eb1ng c\u00e1ch gi\u1ea3m thi\u1ec3u c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt DOM.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ReactJS \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0 v\u1eadn h\u00e0nh b\u1edfi Facebook, b\u1eb1ng c\u00e1ch tri\u1ec3n khai DOM \u1ea3o, ReactJS \u0111\u00e3 gi\u1ea3i quy\u1ebft c\u1ea3i thi\u1ec7n v\u1ea5n \u0111\u1ec1 DOM ch\u1eadm v\u00e0 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn h\u01a1n. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c phi\u00ean b\u1ea3n c\u1ee7a ReactJS lu\u00f4n \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n v\u00e0 c\u1eadp nh\u1eadt c\u00e1c t\u00ednh n\u0103ng m\u1edbi ph\u00f9 h\u1ee3p v\u1edbi xu h\u01b0\u1edbng hi\u1ec7n nay.<\/span><\/p>\n<blockquote><p>\u0110\u1ecdc th\u00eam: <a href=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-reactjs-la-gi\/\" target=\"_blank\" rel=\"noopener\"><strong>Top 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao<\/strong><\/a><\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Mot_so_tinh_nang_noi_bat_cua_ReactJS\"><\/span><b> M\u1ed9t s\u1ed1 t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a ReactJS<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>Ki\u1ebfn tr\u00fac Component-Based\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS cung c\u1ea5p t\u00ednh n\u0103ng chia nh\u1ecf UI th\u00e0nh c\u00e1c component nh\u1ecf h\u01a1n v\u00e0 c\u00f3 t\u00ednh \u0111\u1ed9c l\u1eadp. M\u1ed7i components c\u00f3 tr\u1ea1ng th\u00e1i v\u00e0 thu\u1ed9c t\u00ednh (props) ri\u00eang bi\u1ec7t.<\/span><\/p>\n<h3><b>JSX (JavaScript Syntax Extension)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">JSX l\u00e0 ph\u1ea7n m\u1edf r\u1ed9ng c\u00fa ph\u00e1p cho JavaScript cho ph\u00e9p l\u1eadp tr\u00ecnh vi\u00ean vi\u1ebft m\u00e3 gi\u1ed1ng HTML trong c\u00e1c t\u1ec7p JavaScript c\u1ee7a n\u00f3. \u0110\u1ed3ng th\u1eddi, JSX l\u00e0m cho components ReactJS d\u1ec5 \u0111\u1ecdc v\u00e0 thu h\u00fat h\u01a1n.\u00a0<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">const name=\"GeekforGeeks\";<\/span>\r\n\r\n<span style=\"font-weight: 400;\">const ele = &lt;h1&gt;Welcome to {name}&lt;\/h1&gt;;<\/span><\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-82294 aligncenter\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro.jpg\" alt=\"reactjs l\u00e0 g\u00ec - itviec blog\" width=\"1214\" height=\"463\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro.jpg 1214w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro-300x114.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro-700x267.jpg 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro-200x76.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-1-vippro-100x38.jpg 100w\" sizes=\"auto, (max-width: 1214px) 100vw, 1214px\" \/><\/p>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Ho\u1ea1t \u0111\u1ed9ng c\u1ee7a JSX (Ngu\u1ed3n \u1ea3nh: simplilearn.com)<\/span><\/i><\/p>\n<h3><b>Virtual DOM\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS duy tr\u00ec m\u1ed9t bi\u1ec3u di\u1ec5n nh\u1eb9 (lightweight representation) c\u1ee7a DOM th\u1ef1c t\u1ebf trong b\u1ed9 nh\u1edb. Khi c\u00f3 thay \u0111\u1ed5i, ReactJS ch\u1ec9 c\u1eadp nh\u1eadt hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c ph\u1ea7n c\u1ea7n thi\u1ebft trong DOM.\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-82293 aligncenter\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro.jpg\" alt=\"reactjs l\u00e0 g\u00ec - itviec blog\" width=\"1116\" height=\"503\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro.jpg 1116w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro-300x135.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro-1116x500.jpg 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro-200x90.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2024\/11\/reactjs-2-vippro-100x45.jpg 100w\" sizes=\"auto, (max-width: 1116px) 100vw, 1116px\" \/><\/p>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Virtual DOM c\u1ee7a ReactJS (Ngu\u1ed3n \u1ea3nh: simplilearn.com)<\/span><\/i><\/p>\n<h3><b>Li\u00ean k\u1ebft d\u1eef li\u1ec7u 1 chi\u1ec1u (One-way Data Binding)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">D\u1eef li\u1ec7u trong ReactJS ch\u1ec9 ch\u1ea1y theo m\u1ed9t h\u01b0\u1edbng, t\u1ee9c l\u00e0 d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi, t\u1eeb th\u00e0nh ph\u1ea7n l\u1edbn \u0111\u1ebfn th\u00e0nh ph\u1ea7n nh\u1ecf. C\u00e1c thu\u1ed9c t\u00ednh (props) trong components con kh\u00f4ng th\u1ec3 tr\u1ea3 v\u1ec1 d\u1eef li\u1ec7u cho components l\u1edbn h\u01a1n n\u00f3, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 giao ti\u1ebfp v\u1edbi components cha \u0111\u1ec3 s\u1eeda \u0111\u1ed5i c\u00e1c tr\u1ea1ng th\u00e1i theo \u0111\u1ea7u v\u00e0o \u0111\u01b0\u1ee3c cung c\u1ea5p.\u00a0<\/span><\/p>\n<h3><b>Performance<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS s\u1eed d\u1ee5ng DOM \u1ea3o v\u00e0 ch\u1ec9 c\u1eadp nh\u1eadt c\u00e1c ph\u1ea7n \u0111\u00e3 s\u1eeda \u0111\u1ed5i. Do \u0111\u00f3, \u0111i\u1ec1u n\u00e0y l\u00e0m cho DOM ch\u1ea1y nhanh h\u01a1n. DOM th\u1ef1c thi trong b\u1ed9 nh\u1edb \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o components gi\u00fap DOM ch\u1ea1y nhanh h\u01a1n.<\/span><\/p>\n<h3><strong>Components<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS chia trang web th\u00e0nh nhi\u1ec1u component kh\u00e1c nhau, b\u1edfi v\u00ec ch\u00fang ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c components. M\u1ed7i component l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a UI c\u00f3 logic v\u00e0 thi\u1ebft k\u1ebf ri\u00eang. Do \u0111\u00f3, logic component \u0111\u01b0\u1ee3c vi\u1ebft b\u1eb1ng JavaScript s\u1ebd gi\u00fap kh\u1edfi ch\u1ea1y d\u1ec5 d\u00e0ng, nhanh ch\u00f3ng v\u00e0 c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng.\u00a0<\/span><\/p>\n<h3><b>D\u1eef li\u1ec7u m\u1ed9t trang (Single-Page Applications &#8211; SPA)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS \u0111\u01b0\u1ee3c khuy\u1ebfn kh\u00edch s\u1eed d\u1ee5ng trong vi\u1ec7c t\u1ea1o SPA, cho ph\u00e9p c\u1eadp nh\u1eadt n\u1ed9i dung m\u01b0\u1ee3t m\u00e0 m\u00e0 kh\u00f4ng c\u1ea7n t\u1ea3i l\u1ea1i trang. T\u1eadp trung v\u00e0o c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng khi\u1ebfn n\u00f3 tr\u1edf n\u00ean th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng th\u1eddi gian th\u1ef1c.\u00a0<\/span><\/p>\n<h3><b>Props<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Props l\u00e0 t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a Properties trong ReactJS Props, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng truy\u1ec1n tham s\u1ed1 ho\u1eb7c d\u1eef li\u1ec7u cho component. Props gi\u00fap component tr\u1edf n\u00ean n\u0103ng \u0111\u1ed9ng h\u01a1n v\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n ch\u1ec9 \u0111\u1ecdc, kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i.\u00a0<\/span><\/p>\n<pre><span style=\"font-weight: 400;\">import React, { Component } from \"react\";<\/span>\r\n<span style=\"font-weight: 400;\">class Classprops extends Component {<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0render() {<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0return (<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0\u00a0\u00a0&lt;div&gt;<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;h1&gt;<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Hello {this.props.name} from {this.props.place}! Welcome to ITviec Blog<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lt;\/h1&gt;<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0\u00a0\u00a0&lt;\/div&gt;<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0\u00a0\u00a0);<\/span>\r\n<span style=\"font-weight: 400;\"> \u00a0}<\/span>\r\n<span style=\"font-weight: 400;\">}<\/span>\r\n<span style=\"font-weight: 400;\">export default Classprops;<\/span><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"Uu_va_nhuoc_diem_cua_thu_vien_Javascript_ReactJS_la_gi\"><\/span><b>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a th\u01b0 vi\u1ec7n Javascript ReactJS l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>\u01afu \u0111i\u1ec3m ReactJS<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t s\u1ed1 \u01b0u \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a ReactJS c\u00f3 th\u1ec3 k\u1ec3 \u0111\u1ebfn nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e2y d\u1ef1ng DOM \u1ea3o t\u00f9y ch\u1ec9nh, b\u1edfi v\u00ec DOM \u1ea3o JavaScript ho\u1ea1t \u0111\u1ed9ng nhanh h\u01a1n do\u00a0 v\u1edbi DOM th\u00f4ng th\u01b0\u1eddng, \u0111i\u1ec1u n\u00e0y s\u1ebd gi\u00fap n\u00e2ng cao hi\u1ec7u su\u1ea5t c\u1ee7a \u1ee9ng d\u1ee5ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ReactJS t\u1ea1o ra giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng UI cho website h\u1ea5p d\u1eabn v\u00e0 \u1ea5n t\u01b0\u1ee3ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Th\u00e2n thi\u1ec7n v\u1edbi c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Module v\u00e0 d\u1eef li\u1ec7u gi\u00fap qu\u1ea3n l\u00fd \u1ee9ng d\u1ee5ng l\u1edbn d\u1ec5 d\u00e0ng h\u01a1n b\u1eb1ng c\u00e1ch c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng \u0111\u1ecdc.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00edch h\u1ee3p nhi\u1ec1u ki\u1ebfn tr\u00fac kh\u00e1c nhau.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ed1i \u01b0u v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh m\u00f4i tr\u01b0\u1eddng t\u1eadp l\u1ec7nh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B\u1ea3o tr\u00ec d\u1ec5 d\u00e0ng v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ea7u ra.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1ea3m b\u1ea3o render nhanh h\u01a1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng nhi\u1ec1u h\u1ec7 th\u1ed1ng kh\u00e1c nhau, tr\u00ean c\u1ea3 m\u00e1y kh\u00e1ch (client-side) v\u00e0 m\u00e1y ch\u1ee7 (server-side).<\/span><\/li>\n<\/ul>\n<h3><b>Nh\u01b0\u1ee3c \u0111i\u1ec3m ReactJS<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u00ean c\u1ea1nh \u0111\u00f3, ReactJS v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i m\u1ed9t s\u1ed1 nh\u01b0\u1ee3c \u0111i\u1ec3m nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ch\u1ec9 gi\u1ea3i quy\u1ebft g\u00f3c v\u00e0 kho\u1ea3ng c\u00e1ch c\u1ee7a \u1ee9ng d\u1ee5ng. Do \u0111\u00f3, b\u1ea1n ph\u1ea3i ch\u1ecdn c\u00e1c k\u1ef9 thu\u1eadt b\u1ed5 sung n\u1ebfu mu\u1ed1n c\u00f3 b\u1ed9 c\u00f4ng c\u1ee5 ph\u00e1t tri\u1ec3n \u0111\u1ea7y \u0111\u1ee7.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng t\u1eadp l\u1ec7nh n\u1ed9i tuy\u1ebfn v\u00e0 JSX c\u00f3 th\u1ec3 khi\u1ebfn m\u1ed9t s\u1ed1 l\u1eadp tr\u00ecnh vi\u00ean c\u1ea3m th\u1ea5y kh\u00f4ng tho\u1ea3i m\u00e1i ho\u1eb7c ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u.\u00a0<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"ReactJS_hoat_dong_nhu_the_nao\"><\/span><b> ReactJS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">ReactJS c\u00f3 th\u1ec3 cho ph\u00e9p truy\u1ec1n m\u00e3 HTML v\u1edbi JavaScript v\u1edbi nh\u1eefng l\u1ee3i \u00edch nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">DOM l\u00e0 m\u1ed9t c\u1ea5u tr\u00fac c\u00e2y bi\u1ec3u di\u1ec5n t\u00e0i li\u1ec7u HTML, v\u00e0 JavaScript c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi DOM \u0111\u1ec3 thay \u0111\u1ed5i n\u1ed9i dung v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a trang web.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ReactJS s\u1eed d\u1ee5ng m\u1ed9t thu\u1eadt to\u00e1n diff hi\u1ec7u qu\u1ea3 \u0111\u1ec3 t\u00ecm ra nh\u1eefng ph\u1ea7n t\u1eed c\u1ea7n thay \u0111\u1ed5i v\u00e0 ch\u1ec9 c\u1eadp nh\u1eadt nh\u1eefng ph\u1ea7n \u0111\u00f3 tr\u00ean DOM th\u1ef1c t\u1ebf, tr\u00e1nh vi\u1ec7c c\u1eadp nh\u1eadt l\u1ea1i to\u00e0n b\u1ed9 DOM.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khi c\u00f3 nhu c\u1ea7u \u0111\u1ecdc v\u00e0 ghi v\u00e0o DOM, JSX s\u1ebd s\u1eed d\u1ee5ng DOM \u1ea3o c\u1ee7a n\u00f3. Sau \u0111\u00f3 DOM \u1ea3o s\u1ebd c\u1ed1 g\u1eafng t\u00ecm c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u1ec3 c\u1eadp nh\u1eadt DOM c\u1ee7a tr\u00ecnh duy\u1ec7t.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Trong ReactJS, b\u1ea1n t\u1ea1o ra c\u00e1c ph\u1ea7n t\u1eed React b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c h\u00e0m JSX nh\u01b0 &lt;div&gt;, &lt;button&gt;,&#8230; C\u00e1c ph\u1ea7n t\u1eed n\u00e0y kh\u00f4ng ph\u1ea3i l\u00e0 DOM th\u1ef1c, m\u00e0 l\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01a1n gi\u1ea3n \u0111\u01b0\u1ee3c t\u1ea1o ra d\u1ec5 d\u00e0ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ReactJS s\u1eed d\u1ee5ng m\u1ed9t DOM \u1ea3o (Virtual DOM) \u0111\u1ec3 t\u1ed1i \u01b0u qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt DOM th\u1ef1c. Khi b\u1ea1n c\u1eadp nh\u1eadt m\u1ed9t ph\u1ea7n t\u1eed React, ReactJS s\u1ebd so s\u00e1nh ph\u1ea7n t\u1eed m\u1edbi v\u1edbi ph\u1ea7n t\u1eed c\u0169 trong DOM \u1ea3o, sau \u0111\u00f3 ch\u1ec9 c\u1eadp nh\u1eadt nh\u1eefng ph\u1ea7n c\u1ea7n thi\u1ebft trong DOM th\u1ef1c, nh\u1edd t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd nhanh c\u1ee7a JavaScript.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ngo\u00e0i ra, m\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 s\u1eed d\u1ee5ng trong tr\u00ecnh duy\u1ec7t nh\u01b0ng thi\u1ebft k\u1ebf c\u1ee7a ReactJS s\u1ebd khi\u1ebfn ch\u00fang c\u00f3 l\u1ee3i khi s\u1eed d\u1ee5ng tr\u00ean m\u00e1y ch\u1ee7 Node.JS.\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Lam_the_nao_de_su_dung_ReactJS\"><\/span><b> L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 s\u1eed d\u1ee5ng ReactJS?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Kh\u00e1c v\u1edbi c\u00e1c framework kh\u00e1c nh\u01b0 Angular, ReactJS kh\u00f4ng \u00e1p d\u1ee5ng c\u00e1c quy t\u1eafc \u0111\u1ed1i v\u1edbi quy \u01b0\u1edbc m\u00e3 ho\u1eb7c qu\u1ea3n l\u00fd t\u1ec7p. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a b\u1ea1n c\u00f3 th\u1ec3 t\u1ef1 do thi\u1ebft l\u1eadp c\u00e1c quy \u01b0\u1edbc ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u v\u00e0 tri\u1ec3n khai ReactJS theo b\u1ea5t k\u1ef3 n\u00e0o b\u1ea1n th\u1ea5y th\u00edch h\u1ee3p. V\u1edbi ReactJS, b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng linh ho\u1ea1t nhi\u1ec1u ho\u1eb7c \u00edt quy \u01b0\u1edbc t\u00f9y theo nhu c\u1ea7u.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Khi s\u1eed d\u1ee5ng ReactJS, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o m\u1ed9t n\u00fat duy nh\u1ea5t, m\u1ed9t ph\u1ea7n ho\u1eb7c to\u00e0n b\u1ed9 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng UI c\u1ee7a \u1ee9ng d\u1ee5ng. B\u00ean c\u1ea1nh \u0111\u00f3, b\u1ea1n c\u0169ng c\u00f3 th\u1ec3 t\u00edch h\u1ee3p ch\u00fang v\u00e0o m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u00e3 t\u1ed3n t\u1ea1i v\u00e0 t\u0103ng m\u1ed9t ch\u00fat t\u01b0\u01a1ng t\u00e1c l\u00e0 \u0111\u00e3 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u1ed9t \u1ee9ng d\u1ee5ng m\u1ea1nh m\u1ebd v\u00e0 ho\u00e0n ch\u1ec9nh.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1eb7c d\u00f9 ReactJS kh\u00f4ng b\u1eaft bu\u1ed9c ph\u1ea3i tu\u00e2n theo m\u1ed9t quy \u01b0\u1edbc m\u00e3 c\u1ee5 th\u1ec3, nh\u01b0ng vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t quy \u01b0\u1edbc nh\u1ea5t qu\u00e1n s\u1ebd gi\u00fap cho code d\u1ec5 \u0111\u1ecdc, d\u1ec5 b\u1ea3o tr\u00ec h\u01a1n. C\u00e1c quy \u01b0\u1edbc ph\u1ed5 bi\u1ebfn nh\u01b0 Airbnb style guide ho\u1eb7c StandardJS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng. ReactJS kh\u00f4ng c\u00f3 m\u1ed9t gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd state t\u00edch h\u1ee3p s\u1eb5n. \u0110\u1ec3 qu\u1ea3n l\u00fd state cho c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p, ng\u01b0\u1eddi ta th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c th\u01b0 vi\u1ec7n nh\u01b0 Redux ho\u1eb7c Context API.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"So_sanh_ReactJS_va_cac_thu_vien_Javascript_khac\"><\/span><b>So s\u00e1nh ReactJS v\u00e0 c\u00e1c th\u01b0 vi\u1ec7n Javascript kh\u00e1c<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Khi so s\u00e1nh ReactJS v\u1edbi c\u00e1c <\/span><a href=\"https:\/\/itviec.com\/blog\/front-end-framework-library\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">framework ho\u1eb7c th\u01b0 vi\u1ec7n<\/span><\/a><span style=\"font-weight: 400;\"> JavaScript ph\u1ed5 bi\u1ebfn kh\u00e1c nh\u01b0 Angular ho\u1eb7c Vue.js th\u00ec t\u00ednh linh ho\u1ea1t s\u1ebd l\u00e0 \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a framework ReactJS.<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">Kh\u00f4ng gi\u1ed1ng nh\u01b0 <\/span><a href=\"https:\/\/itviec.com\/blog\/angular-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Angular<\/span><\/a><span style=\"font-weight: 400;\"> hay <\/span><a href=\"https:\/\/itviec.com\/blog\/vuejs-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">Vue.js<\/span><\/a><span style=\"font-weight: 400;\">, ch\u00fang ch\u1ec9 ra nh\u1eefng c\u00e1ch c\u1ee5 th\u1ec3 \u0111\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 th\u00ec ReactJS kh\u00f4ng c\u00f3 quan \u0111i\u1ec3m nh\u1ea5t \u0111\u1ecbnh. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean c\u00f3 nhi\u1ec1u quy\u1ec1n t\u1ef1 do h\u01a1n trong vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1ch x\u00e2y d\u1ef1ng c\u1ea5u tr\u00fac \u1ee9ng d\u1ee5ng c\u1ee7a h\u1ecd.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Khi n\u00f3i v\u1ec1 giao ti\u1ebfp gi\u1eefa m\u00e1y kh\u00e1ch (client-side) v\u00e0 m\u00e1y ch\u1ee7 (server-side), c\u1ea3 Vue.js v\u00e0 ReactJS th\u01b0\u1eddng s\u1eed d\u1ee5ng Axios trong khi Angular cung c\u1ea5p module client-side HTTP.\u00a0<\/span><\/li>\n<li><span style=\"font-weight: 400;\">M\u1ed9t \u0111i\u1ec3m kh\u00e1c bi\u1ec7t kh\u00e1c v\u1ec1 k\u00edch th\u01b0\u1edbc khi xem x\u00e9t c\u00e1c \u0111\u1ed1i t\u00e1c nh\u1eb9 nh\u01b0 Preact, m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf nh\u1ecf h\u01a1n cung c\u1ea5p ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 ReactJS.\u00a0<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">T\u00f3m l\u1ea1i, ReactJS n\u1ed5i b\u1eadt h\u01a1n so v\u1edbi c\u00e1c framework v\u00e0 th\u01b0 vi\u1ec7n JavaScript kh\u00e1c nh\u1edd v\u00e0o t\u00ednh linh ho\u1ea1t n\u00f3 mang l\u1ea1i. Gi\u00fap c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng m\u1ed9t trang (SPA) m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng h\u01a1n.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u1ea3ng t\u1ed5ng h\u1ee3p v\u1ec1 s\u1ef1 kh\u00e1c nhau gi\u1eefa ReactJS v\u1edbi Angular v\u00e0 Vue.js:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Ti\u00eau ch\u00ed<\/b><\/td>\n<td><b>Angular<\/b><\/td>\n<td><b>ReactJS<\/b><\/td>\n<td><b>Vue.js<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ph\u00e1t tri\u1ec3n b\u1edfi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Google<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Facebook<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Evan You, a former Google engineer<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Th\u00e0nh l\u1eadp<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2010<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2013<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2014<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TypeScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript\u00a0 (c\u00f3 th\u1ec3 d\u00f9ng JSX)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Category<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Framework<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Th\u01b0 vi\u1ec7n (c\u00f3 th\u1ec3 d\u00f9ng nh\u01b0 framework)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Framework<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C\u00fa ph\u00e1p<\/span><\/td>\n<td><span style=\"font-weight: 400;\">HTML<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JSX<\/span><\/td>\n<td><span style=\"font-weight: 400;\">HTML (m\u1eb7c \u0111\u1ecbnh) v\u00e0 JSX<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ki\u1ebfn tr\u00fac<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Model-View-Control (MVC), Component-based (d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Component-based (d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Component-based (d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Data Binding<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Li\u00ean k\u1ebft d\u1eef li\u1ec7u hai chi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Li\u00ean k\u1ebft d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Li\u00ean k\u1ebft giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ee7a \u1ee9ng d\u1ee5ng v\u1edbi t\u1ec7p d\u1eef li\u1ec7u th\u00edch h\u1ee3p<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Performance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 kh\u1ea3 n\u0103ng nhanh h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c SPA ph\u1ee9c t\u1ea1p<\/span><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 kh\u1ea3 n\u0103ng nhanh h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u01a1n gi\u1ea3n v\u00ec s\u1eed d\u1ee5ng DOM \u1ea3o<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Hi\u1ec7u su\u1ea5t v\u01b0\u1ee3t tr\u1ed9i trong c\u1ea3 c\u00e1c d\u1ef1 \u00e1n nh\u1ecf h\u01a1n ho\u1eb7c \u00edt ph\u1ee9c t\u1ea1p h\u01a1n.\u00a0<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng ch\u00ednh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TypeScript, Dependency Injection, Module, Routing, Services, Directives, Forms<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Virtual DOM, Components, JSX<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Virtual DOM, Documentation, Conditional Rendering, Interpolation, Iteration<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">M\u1ee5c \u0111\u00edch s\u1eed d\u1ee5ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ea1o \u1ee9ng d\u1ee5ng web di \u0111\u1ed9ng, x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng web l\u1edbn, ph\u1ee9c t\u1ea1p, y\u00eau c\u1ea7u c\u1ea5u tr\u00fac ch\u1eb7t ch\u1ebd.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u1ea1o c\u00e1c th\u00e0nh ph\u1ea7n UI t\u01b0\u01a1ng t\u00e1c<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ph\u00e1t tri\u1ec3n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ee7a website v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng m\u1ed9t trang (SPA)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">C\u1ea5u tr\u00fac<\/span><\/td>\n<td><span style=\"font-weight: 400;\">MVC ph\u1ee9c t\u1ea1p<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ebf \u0111\u1ed9 xem d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n linh ho\u1ea1t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Ch\u1ebf \u0111\u1ed9 xem d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n linh ho\u1ea1t<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Hi\u1ec7u su\u1ea5t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cao<\/span><\/td>\n<td><span style=\"font-weight: 400;\">R\u1ea5t Cao (nh\u1edd DOM \u1ea3o)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Cao<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ng\u00f4n ng\u1eef \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3<\/span><\/td>\n<td><span style=\"font-weight: 400;\">TypeScript (ch\u00ednh), JavaScript<\/span><\/td>\n<td><span style=\"font-weight: 400;\">JavaScript (c\u00f3 th\u1ec3 d\u00f9ng JSX, TypeScript)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">NativeScript, JavaScript<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">\u1ee8ng d\u1ee5ng n\u1ed5i b\u1eadt<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Google, Gmail, YouTube, Microsoft Office, Xbox, Mixer, Weather.com, Forbes<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Atlassian, Instagram, Airbnb, Pinterest, Netflix, Dropbox, Uber, Reddit<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Behance, Google, Facebook, Wizz Air, Nintendo, Upwork, Alibaba, Vice, Trustpilot, Netflix, Euronews<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"Lifecycle_ReactJS_la_gi\"><\/span><b>Lifecycle ReactJS l\u00e0 g\u00ec?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">M\u1ed7i ReactJS components \u0111\u1ec1u c\u00f3 v\u00f2ng \u0111\u1eddi (lifecycle) ri\u00eang. V\u00f2ng \u0111\u1eddi c\u1ee7a components c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 chu\u1ed7i c\u00e1c ph\u01b0\u01a1ng th\u1ee9c \u0111\u01b0\u1ee3c g\u1ecdi trong c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau c\u1ee7a m\u1ed7i components. ReactJS t\u1ef1 \u0111\u1ed9ng g\u1ecdi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c n\u00e0y t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau trong v\u00f2ng \u0111\u1eddi c\u1ee7a component.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hi\u1ec3u c\u00e1c giai \u0111o\u1ea1n n\u00e0y s\u1ebd gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i, th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c d\u1ee5ng ph\u1ee5 v\u00e0 t\u1ed1i \u01b0u h\u00f3a component m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.\u00a0<\/span><\/p>\n<h3><b>Kh\u1edfi t\u1ea1o<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 giai \u0111o\u1ea1n m\u00e0 components \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng v\u1edbi c\u00e1c props v\u00e0 tr\u1ea1ng th\u00e1i m\u1eb7c \u0111\u1ecbnh \u0111\u00e3 cho. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong constructor c\u1ee7a component class.\u00a0<\/span><\/p>\n<h3><b>G\u1eafn k\u1ebft (Mounting)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u1ede giai \u0111o\u1ea1n n\u00e0y s\u1ebd bao g\u1ed3m m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c c\u1ee5 th\u1ec3 nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>constructor:<\/b><span style=\"font-weight: 400;\"> Ph\u01b0\u01a1ng th\u1ee9c gi\u00fap kh\u1edfi t\u1ea1o component v\u00e0 l\u00e0 n\u01a1i b\u1ea1n thi\u1ebft l\u1eadp tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u c\u00f9ng li\u00ean k\u1ebft tr\u00ecnh x\u1eed l\u00fd d\u1eef li\u1ec7u.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>render():<\/b><span style=\"font-weight: 400;\"> Ph\u01b0\u01a1ng th\u1ee9c n\u00e0y tr\u1ea3 v\u1ec1 tr\u00ecnh bi\u1ec3u di\u1ec5n JSX c\u1ee7a component. N\u00f3 s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi trong qu\u00e1 tr\u00ecnh render ban \u0111\u1ea7u v\u00e0 c\u00e1c b\u1ea3n c\u1eadp nh\u1eadt ti\u1ebfp theo.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>componentDidMount():<\/b><span style=\"font-weight: 400;\"> Sau khi component \u0111\u01b0\u1ee3c ch\u00e8n v\u00e0o DOM, ph\u01b0\u01a1ng th\u1ee9c n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c hi\u1ec7u \u1ee9ng nh\u01b0 truy xu\u1ea5t d\u1eef li\u1ec7u (render) hay thi\u1ebft l\u1eadp b\u1ed9 \u0111\u1ebfm th\u1eddi gian.\u00a0<\/span><\/li>\n<\/ul>\n<h3><b>C\u1eadp nh\u1eadt (Updating)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Bao g\u1ed3m m\u1ed9t s\u1ed1 ph\u01b0\u01a1ng th\u1ee9c nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>componentDidUpdate(prevProps, prevState):<\/b><span style=\"font-weight: 400;\"> \u0110\u01b0\u1ee3c g\u1ecdi sau khi component c\u1eadp nh\u1eadt, do c\u00f3 props ho\u1eb7c tr\u1ea1ng th\u00e1i m\u1edbi v\u1eeba \u0111\u01b0\u1ee3c thay \u0111\u1ed5i. \u0110\u1ed3ng th\u1eddi, x\u1eed l\u00fd c\u00e1c t\u00e1c d\u1ee5ng ph\u1ee5 \u1edf giai \u0111o\u1ea1n n\u00e0y.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>shouldComponentUpdate(nextProps, nextState):<\/b><span style=\"font-weight: 400;\"> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem component c\u00f3 n\u00ean k\u1ebft xu\u1ea5t l\u1ea1i hay kh\u00f4ng. T\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t b\u1eb1ng c\u00e1ch t\u00f9y ch\u1ec9nh ph\u01b0\u01a1ng th\u1ee9c n\u00e0y.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>render():<\/b><span style=\"font-weight: 400;\"> Ph\u01b0\u01a1ng th\u1ee9c n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c g\u1ecdi m\u1ed9t l\u1ea7n n\u1eefa \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u00e1c thay \u0111\u1ed5i v\u1ec1 tr\u1ea1ng th\u00e1i ho\u1eb7c props trong qu\u00e1 tr\u00ecnh c\u1eadp nh\u1eadt.<\/span><\/li>\n<\/ul>\n<h3><b>Unmounting<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u1ede giai \u0111o\u1ea1n n\u00e0y, b\u1ea1n s\u1ebd s\u1eed d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c componentWillUnmount(), \u0111\u01b0\u1ee3c g\u1ecdi ngay tr\u01b0\u1edbc khi component b\u1ecb x\u00f3a kh\u1ecfi DOM. \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 d\u1ecdn d\u1eb9p c\u00e1c t\u00e0i nguy\u00ean nh\u01b0 tr\u00ecnh l\u1eafng nghe d\u1eef li\u1ec7u hay b\u1ed9 \u0111\u1ebfm th\u1eddi gian).\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Cau_hoi_thuong_gap_ve_ReactJS_la_gi\"><\/span><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ReactJS l\u00e0 g\u00ec<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><b>ReactJS c\u00f3 d\u1ec5 h\u1ecdc kh\u00f4ng?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Nh\u00ecn chung, ReactJS kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u00e0 th\u00e2n thi\u1ec7n \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u. Th\u01b0 vi\u1ec7n s\u1eed d\u1ee5ng JavaScript v\u00e0 JSX \u0111\u1ec3 t\u1ea1o c\u00e1c \u1ee9ng d\u1ee5ng trang \u0111\u01a1n (SPA) n\u00ean n\u1ebfu b\u1ea1n \u0111\u00e3 c\u00f3 n\u1ec1n t\u1ea3ng ki\u1ebfn th\u1ee9c v\u1ec1 <\/span><a href=\"https:\/\/itviec.com\/blog\/html-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">HTML<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/itviec.com\/blog\/css-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">CSS<\/span><\/a><span style=\"font-weight: 400;\"> v\u00e0 JavaScript th\u00ec b\u1ea1n c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng kh\u00e1m ph\u00e1 nhi\u1ec1u h\u01a1n v\u1ec1 ReactJS.\u00a0<\/span><\/p>\n<h3><b>N\u00ean l\u1ef1a ch\u1ecdn Angular hay ReactJS?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">N\u1ebfu \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n c\u1ea7n t\u00edch h\u1ee3p ch\u1ee9c n\u0103ng ph\u1ee9c t\u1ea1p nh\u01b0 \u1ee9ng d\u1ee5ng \u0111\u1ed9ng th\u00ec Angular s\u1ebd v\u01b0\u1ee3t tr\u1ed9i h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, ReactJS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u \u1ee9ng d\u1ee5ng, v\u1edbi c\u1ea3 c\u00e1c \u1ee9ng d\u1ee5ng ti\u00eau chu\u1ea9n v\u00e0 t\u1eadp trung v\u00e0o vi\u1ec7c ph\u00e1t tri\u1ec3n c\u00e1c th\u00e0nh ph\u1ea7n UI.\u00a0<\/span><\/p>\n<h3><b>React v\u00e0 ReactJS c\u00f3 g\u00ec kh\u00e1c nhau?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">ReactJS l\u00e0 m\u1ed9t framework v\u00e0 React Native l\u00e0 to\u00e0n b\u1ed9 framework nh\u01b0ng c\u1ea3 hai \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng h\u00e0i h\u00f2a v\u00ec framework t\u1ea1o th\u00e0nh c\u1ed1t l\u00f5i cho framework sau.<\/span><\/p>\n<p><a href=\"https:\/\/itviec.com\/blog\/tong-quan-react-native-la-gi\/\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">React Native<\/span><\/a><span style=\"font-weight: 400;\"> s\u1ebd gi\u00fap \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng c\u1ea3m gi\u00e1c \u201cth\u1ef1c\u201d (native) c\u0169ng nh\u01b0 ReactJS s\u1ebd l\u00fd t\u01b0\u1edfng h\u00f3a \u0111\u1ec3 x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng c\u00f3 hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p cao h\u01a1n.\u00a0<\/span><\/p>\n<h3><b>ReactJS \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 l\u00e0m g\u00ec?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a ReactJS l\u00e0 l\u1eadp tr\u00ecnh giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (UI) gi\u00fap t\u0103ng t\u1ed1c \u0111\u1ed9 c\u1ee7a ch\u01b0\u01a1ng tr\u00ecnh. N\u00f3 s\u1eed d\u1ee5ng DOM \u1ea3o (JavaScript Object) \u0111\u1ec3 gi\u00fap t\u0103ng hi\u1ec7u qu\u1ea3 c\u1ee7a \u1ee9ng d\u1ee5ng.\u00a0<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket_ReactJS_la_gi\"><\/span><b>T\u1ed5ng k\u1ebft ReactJS l\u00e0 g\u00ec<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Hy v\u1ecdng b\u00e0i vi\u1ebft \u0111\u00e3 cung c\u1ea5p nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch \u0111\u1ec3 gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n\u00a0<\/span><b>ReactJS l\u00e0 g\u00ec<\/b><span style=\"font-weight: 400;\"> bao g\u1ed3m ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 JSX, props, lifecycle c\u00f9ng nh\u1eefng \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a framework ph\u1ed5 bi\u1ebfn trong vi\u1ec7c t\u1ea1o giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">ReactJS s\u1ebd l\u00e0 m\u1ed9t framework g\u00f3p ph\u1ea7n gi\u00fap c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean Front-End c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng th\u00e0nh t\u00edch n\u1ed5i b\u1eadt c\u0169ng nh\u01b0 c\u01a1 h\u1ed9i th\u0103ng ti\u1ebfn trong t\u01b0\u01a1ng lai.<\/span><\/p>\n<blockquote><p><i><span style=\"font-weight: 400;\">Xem th\u00eam: <\/span><\/i><strong><a href=\"https:\/\/itviec.com\/blog\/front-end-developer-la-gi\/\" target=\"_blank\" rel=\"noopener\"><i>Front end Developer l\u00e0 g\u00ec: L\u00e0m g\u00ec, L\u1ed9 tr\u00ecnh h\u1ecdc t\u1eadp v\u00e0 C\u00f4ng c\u1ee5 l\u00e0m vi\u1ec7c<\/i><\/a><\/strong><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>ReactJS l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n JavaScript ph\u1ed5 bi\u1ebfn v\u00e0 m\u1ea1nh m\u1ebd \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng v\u00e0 t\u01b0\u01a1ng t\u00e1c, ch\u1ee7 y\u1ebfu cho c\u00e1c \u1ee9ng d\u1ee5ng m\u1ed9t trang (SPA). \u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Facebook v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng k\u1ef9 thu\u1eadt k\u1ebft xu\u1ea5t hi\u1ec7u qu\u1ea3, v\u00e0 h\u1ed7 tr\u1ee3 t\u00edch c\u1ef1c cho ng\u01b0\u1eddi [&hellip;]<\/p>\n","protected":false},"author":207,"featured_media":82292,"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-82087","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 v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>ReactJS l\u00e0 g\u00ec: T\u00ednh n\u0103ng n\u1ed5i b\u1eadt, c\u00e1ch ho\u1ea1t \u0111\u1ed9ng v\u00e0 Lifecycle - ITviec Blog<\/title>\n<meta name=\"description\" content=\"ReactJS l\u00e0 th\u01b0 vi\u1ec7n JavaScript front-end m\u00e3 ngu\u1ed3n m\u1edf gi\u00fap t\u1ed1i \u01b0u giao di\u1ec7n web ph\u1ed5 bi\u1ebfn. 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