{"id":22596,"date":"2021-12-07T13:48:34","date_gmt":"2021-12-07T06:48:34","guid":{"rendered":"https:\/\/itviec.com\/blog\/?p=22596"},"modified":"2024-09-29T22:55:52","modified_gmt":"2024-09-29T15:55:52","slug":"cau-hoi-phong-van-reactjs-la-gi","status":"publish","type":"post","link":"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-reactjs-la-gi\/","title":{"rendered":"Top 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao"},"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\/cau-hoi-phong-van-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\/cau-hoi-phong-van-reactjs-la-gi\/#Cau_hoi_phong_van_ReactJS_co_ban\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS c\u01a1 b\u1ea3n<\/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\/cau-hoi-phong-van-reactjs-la-gi\/#Cau_hoi_phong_van_ReactJS_ve_Components\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 Components<\/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\/cau-hoi-phong-van-reactjs-la-gi\/#Cau_hoi_phong_van_ReactJS_ve_ReactJS_Redux\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 ReactJS Redux<\/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\/cau-hoi-phong-van-reactjs-la-gi\/#Cau_hoi_phong_van_ReactJS_ve_React_Router\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 React Router<\/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\/cau-hoi-phong-van-reactjs-la-gi\/#Cau_hoi_phong_van_ReactJS_ve_Styling\" >C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 Styling<\/a><\/li><\/ul><\/nav><\/div>\n\r\n<p><strong><em>ReactJS l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee7 \u0111\u1ec1 \u201cn\u00f3ng h\u1ed5i&#8221; trong ng\u00e0nh IT hi\u1ec7n nay. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, React l\u00e0 c\u00f4ng ngh\u1ec7 front-end ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00f4ng ty s\u1eed d\u1ee5ng. N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho bu\u1ed5i ph\u1ecfng v\u1ea5n s\u1eafp t\u1edbi, sau \u0111\u00e2y l\u00e0 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS ph\u1ed5 bi\u1ebfn nh\u1ea5t, k\u00e8m theo c\u00e2u tr\u1ea3 l\u1eddi, d\u00e0nh cho b\u1ea1n.<\/em><\/strong><\/p>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch t\u1ed5ng h\u1ee3p t\u1ea5t c\u1ea3 c\u00e1c c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS ph\u1ed5 bi\u1ebfn t\u1eeb c\u1ea5p \u0111\u1ed9 c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao th\u01b0\u1eddng \u0111\u01b0\u1ee3c h\u1ecfi trong c\u00e1c cu\u1ed9c ph\u1ecfng v\u1ea5n.<\/p>\r\n<blockquote>\r\n<p>Tham kh\u1ea3o <a href=\"https:\/\/itviec.com\/viec-lam-it\/reactjs\/ho-chi-minh-hcm?utm_medium=anchor_text_high&amp;utm_source=blog&amp;utm_campaign=viec_lam_reactjs_tai_tphcm&amp;utm_content=reactjs_la_gi\" target=\"_blank\" rel=\"noopener\"><strong>Vi\u1ec7c l\u00e0m ReactJS t\u1ea1i TP. HCM<\/strong><\/a> tr\u00ean ITviec<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p><em>Read the full English version: <strong><a href=\"https:\/\/www.simplilearn.com\/tutorials\/reactjs-tutorial\/reactjs-interview-questions?source=sl_frs_nav_playlist_video_clicked\" target=\"_blank\" rel=\"noreferrer noopener\">Top 40 ReactJS Interview Questions and Answers &#8211; Basic to Advanced Level<\/a><\/strong><\/em><\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-reactjs-la-gi\"><span class=\"ez-toc-section\" id=\"ReactJS_la_gi\"><\/span><strong>ReactJS l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>Tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS, h\u00e3y c\u00f9ng \u201c\u00f4n&#8221; l\u1ea1i ReactJS l\u00e0 g\u00ec nh\u00e9.<\/p>\r\n\r\n\r\n\r\n<p>ReactJS l\u00e0 th\u01b0 vi\u1ec7n JavaScript front-end ph\u1ed5 bi\u1ebfn nh\u1ea5t trong l\u0129nh v\u1ef1c ph\u00e1t tri\u1ec3n web, hay c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 React. React \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng nhanh v\u00e0 t\u01b0\u01a1ng t\u00e1c cho c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 di \u0111\u1ed9ng.<\/p>\r\n<blockquote>\r\n<p><em>Tham kh\u1ea3o: <a href=\"https:\/\/itviec.com\/blog\/framework-la-gi-top-framework-pho-bien-nhat\/\" target=\"_blank\" rel=\"noopener\"><strong>Top 5 framework ph\u1ed5 bi\u1ebfn nh\u1ea5t d\u00e0nh cho Web Developer<\/strong><\/a><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p>React \u0111\u00e3 tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn nh\u1edd v\u00e0o m\u1ed9t s\u1ed1 t\u00ednh n\u0103ng n\u1ed5i b\u1eadt &#8211; c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u1ea3 \u1ee9ng d\u1ee5ng web v\u00e0 \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng, lu\u1ed3ng d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u, c\u00e1c components c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng, t\u1ea1o c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ed9ng, v.v.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\" id=\"h-cau-h\u1ecfi-ph\u1ecfng-v\u1ea5n-reactjs-c\u01a1-b\u1ea3n\"><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ReactJS_co_ban\"><\/span><strong>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS c\u01a1 b\u1ea3n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 c\u00e1c kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n:<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">1. Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a React?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>JSX<\/strong><\/td>\r\n<td>JSX l\u00e0 m\u1ed9t ph\u1ea7n m\u1edf r\u1ed9ng c\u00fa ph\u00e1p cho JavaScript. JSX \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi React \u0111\u1ec3 m\u00f4 t\u1ea3 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng JSX, ch\u00fang ta c\u00f3 th\u1ec3 vi\u1ebft c\u00e1c c\u1ea5u tr\u00fac HTML trong c\u00f9ng m\u1ed9t t\u1ec7p ch\u1ee9a code JavaScript.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Th\u00e0nh ph\u1ea7n (Components)<\/strong><\/td>\r\n<td>Components l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng React n\u00e0o v\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01a1n l\u1ebb th\u01b0\u1eddng bao g\u1ed3m nhi\u1ec1u components. N\u00f3 chia giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng th\u00e0nh c\u00e1c ph\u1ea7n \u0111\u1ed9c l\u1eadp, c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd ri\u00eang.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>DOM \u1ea3o (Virtual DOM)<\/strong><\/td>\r\n<td>React gi\u1eef m\u1ed9t b\u1ea3n \u201c\u0111\u1ea1i di\u1ec7n&#8221; nh\u01b0ng nh\u1eb9 h\u01a1n c\u1ee7a DOM \u201cth\u1ef1c\u201d trong b\u1ed9 nh\u1edb, g\u1ecdi l\u00e0 DOM \u1ea3o (Virtual DOM). Khi tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng (object) thay \u0111\u1ed5i, DOM \u1ea3o ch\u1ec9 thay \u0111\u1ed5i \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3 trong DOM th\u1ef1c, thay v\u00ec c\u1eadp nh\u1eadt t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u (One-way data-binding)<\/strong><\/td>\r\n<td>Truy\u1ec1n d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u (one-way data binding) c\u1ee7a React gi\u1eef cho m\u1ecdi th\u1ee9 \u0111\u1ec1u theo modular v\u00e0 nhanh ch\u00f3ng. Lu\u1ed3ng d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u c\u00f3 ngh\u0129a l\u00e0 khi thi\u1ebft k\u1ebf m\u1ed9t \u1ee9ng d\u1ee5ng React, b\u1ea1n th\u01b0\u1eddng l\u1ed3ng c\u00e1c components con b\u00ean trong c\u00e1c components m\u1eb9.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Hi\u1ec7u su\u1ea5t cao<\/strong><\/td>\r\n<td>React ch\u1ec9 c\u1eadp nh\u1eadt nh\u1eefng components \u0111\u00e3 thay \u0111\u1ed5i, thay v\u00ec c\u1eadp nh\u1eadt t\u1ea5t c\u1ea3 c\u00e1c components c\u00f9ng m\u1ed9t l\u00fac. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ea1o ra c\u00e1c \u1ee9ng d\u1ee5ng web nhanh h\u01a1n \u0111\u00e1ng k\u1ec3.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">2. JSX l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>JSX l\u00e0 m\u1ed9t ph\u1ea7n m\u1edf r\u1ed9ng c\u00fa ph\u00e1p cho JavaScript. JSX \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi React \u0111\u1ec3 m\u00f4 t\u1ea3 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng JSX, ch\u00fang ta c\u00f3 th\u1ec3 vi\u1ebft c\u00e1c c\u1ea5u tr\u00fac HTML trong c\u00f9ng m\u1ed9t t\u1ec7p ch\u1ee9a code JavaScript.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"375\" height=\"220\" class=\"wp-image-22640\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-29.jpg\" alt=\"reactjs - jsx l\u00e0 g\u00ec\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-29.jpg 375w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-29-300x176.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-29-200x117.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-29-100x59.jpg 100w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">3. C\u00e1c tr\u00ecnh duy\u1ec7t web c\u00f3 \u0111\u1ecdc JSX m\u1ed9t c\u00e1ch tr\u1ef1c ti\u1ebfp \u0111\u01b0\u1ee3c kh\u00f4ng?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Tr\u00ecnh duy\u1ec7t web kh\u00f4ng th\u1ec3 \u0111\u1ecdc JSX m\u1ed9t c\u00e1ch tr\u1ef1c ti\u1ebfp. \u0110i\u1ec1u n\u00e0y l\u00e0 do ch\u00fang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ecdc c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng JS th\u00f4ng th\u01b0\u1eddng v\u00e0 JSX kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng JavaScript th\u00f4ng th\u01b0\u1eddng.<\/li>\r\n<li>\u0110\u1ec3 tr\u00ecnh duy\u1ec7t web c\u00f3 th\u1ec3 \u0111\u1ecdc \u0111\u01b0\u1ee3c t\u1ec7p JSX, t\u1ec7p c\u1ea7n \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng JavaScript th\u00f4ng th\u01b0\u1eddng. \u0110\u1ec3 l\u00e0m \u0111i\u1ec1u n\u00e0y, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng Babel.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">4. DOM \u1ea3o (Virtual DOM) l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>DOM l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Document Object Model. DOM \u0111\u1ea1i di\u1ec7n cho m\u1ed9t t\u00e0i li\u1ec7u HTML c\u00f3 c\u1ea5u tr\u00fac c\u00e2y logic. M\u1ed7i nh\u00e1nh c\u1ee7a c\u00e2y k\u1ebft th\u00fac b\u1eb1ng m\u1ed9t n\u00fat v\u00e0 m\u1ed7i n\u00fat ch\u1ee9a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"376\" height=\"211\" class=\"wp-image-22641\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-30.jpg\" alt=\"DOM \u1ea3o - Virtual DOM l\u00e0 g\u00ec\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-30.jpg 376w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-30-300x168.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-30-200x112.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-30-100x56.jpg 100w\" sizes=\"auto, (max-width: 376px) 100vw, 376px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>React gi\u1eef m\u1ed9t b\u1ea3n \u201c\u0111\u1ea1i di\u1ec7n&#8221; nh\u01b0ng nh\u1eb9 h\u01a1n c\u1ee7a DOM \u201cth\u1ef1c\u201d trong b\u1ed9 nh\u1edb, g\u1ecdi l\u00e0 DOM \u1ea3o (Virtual DOM). Khi tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng (object) thay \u0111\u1ed5i, DOM \u1ea3o ch\u1ec9 thay \u0111\u1ed5i \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3 trong DOM th\u1ef1c, thay v\u00ec c\u1eadp nh\u1eadt t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"445\" height=\"183\" class=\"wp-image-22642\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-31.jpg\" alt=\"DOM \u1ea3o - Virtual DOM\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-31.jpg 445w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-31-300x123.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-31-200x82.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-31-100x41.jpg 100w\" sizes=\"auto, (max-width: 445px) 100vw, 445px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">5. T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng React thay v\u00ec c\u00e1c framework kh\u00e1c, v\u00ed d\u1ee5 nh\u01b0 Angular?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td><strong>D\u1ec5 d\u00e0ng t\u1ea1o c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ed9ng<\/strong><\/td>\r\n<td>React gi\u00fap t\u1ea1o c\u00e1c \u1ee9ng d\u1ee5ng web \u0111\u1ed9ng d\u1ec5 d\u00e0ng h\u01a1n v\u00ec \u00edt code h\u01a1n m\u00e0 l\u1ea1i cung c\u1ea5p nhi\u1ec1u ch\u1ee9c n\u0103ng h\u01a1n, trong khi v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng JavaScript, c\u00e1ch code th\u01b0\u1eddng c\u00f3 xu h\u01b0\u1edbng tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Hi\u1ec7u su\u1ea5t c\u1ea3i thi\u1ec7n<\/strong><\/td>\r\n<td>React s\u1eed d\u1ee5ng DOM \u1ea3o, gi\u00fap c\u00e1c \u1ee9ng d\u1ee5ng web ho\u1ea1t \u0111\u1ed9ng nhanh h\u01a1n. Virtual DOM so s\u00e1nh tr\u1ea1ng th\u00e1i tr\u01b0\u1edbc \u0111\u00f3 c\u1ee7a n\u00f3 v\u00e0 ch\u1ec9 c\u1eadp nh\u1eadt c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 tr\u1ea1ng th\u00e1i thay \u0111\u1ed5i trong DOM th\u1ef1c thay v\u00ec c\u1eadp nh\u1eadt t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n, nh\u01b0 c\u00e1c \u1ee9ng d\u1ee5ng web th\u00f4ng th\u01b0\u1eddng.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>C\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng<\/strong><\/td>\r\n<td>C\u00e1c components l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng React n\u00e0o v\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01a1n l\u1ebb th\u01b0\u1eddng bao g\u1ed3m nhi\u1ec1u components. C\u00e1c components n\u00e0y c\u00f3 logic v\u00e0 c\u00e1c \u0111i\u1ec1u khi\u1ec3n ri\u00eang v\u00e0 ch\u00fang c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng th\u00f4ng qua \u1ee9ng d\u1ee5ng, do \u0111\u00f3 l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian ph\u00e1t tri\u1ec3n m\u1ed9t \u1ee9ng d\u1ee5ng.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Lu\u1ed3ng d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u<\/strong><\/td>\r\n<td>React tu\u00e2n theo lu\u1ed3ng d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 khi thi\u1ebft k\u1ebf m\u1ed9t \u1ee9ng d\u1ee5ng React, ch\u00fang ta th\u01b0\u1eddng l\u1ed3ng c\u00e1c th\u00e0nh ph\u1ea7n con v\u00e0o b\u00ean trong c\u00e1c th\u00e0nh ph\u1ea7n m\u1eb9. V\u00e0 v\u00ec d\u1eef li\u1ec7u ch\u1ea3y theo m\u1ed9t h\u01b0\u1edbng, n\u00ean vi\u1ec7c debug v\u00e0 bi\u1ebft v\u1ea5n \u0111\u1ec1 x\u1ea3y ra \u1edf \u0111\u00e2u trong \u1ee9ng d\u1ee5ng s\u1ebd tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n.<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>C\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng \u0111\u1ec3 debug d\u1ec5 d\u00e0ng<\/strong><\/td>\r\n<td>Facebook \u0111\u00e3 ph\u00e1t h\u00e0nh m\u1ed9t ti\u1ec7n \u00edch m\u1edf r\u1ed9ng Chrome m\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ec3 debug c\u00e1c \u1ee9ng d\u1ee5ng React. \u0110i\u1ec1u n\u00e0y l\u00e0m cho qu\u00e1 tr\u00ecnh g\u1ee1 l\u1ed7i React cho c\u00e1c \u1ee9ng d\u1ee5ng web nhanh h\u01a1n v\u00e0 d\u1ec5 d\u00e0ng h\u01a1n.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">6. \u0110i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa ti\u00eau chu\u1ea9n ES6 v\u00e0 ES5?<\/h3>\r\n\r\n\r\n\r\n<p>\u0110\u00e2y l\u00e0 m\u1ed9t v\u00e0i tr\u01b0\u1eddng h\u1ee3p m\u00e0 c\u00fa ph\u00e1p ES6 kh\u00e1c so v\u1edbi c\u00fa ph\u00e1p ES5:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Components v\u00e0 Function<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"405\" height=\"331\" class=\"wp-image-22612\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-1.jpg\" alt=\"es5 - es6 - components v\u00e0 function\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-1.jpg 405w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-1-300x245.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-1-200x163.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-1-100x82.jpg 100w\" sizes=\"auto, (max-width: 405px) 100vw, 405px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>exports vs export<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"515\" height=\"121\" class=\"wp-image-22613\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-2.jpg\" alt=\"es5 - es6 - exports export\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-2.jpg 515w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-2-300x70.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-2-200x47.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-2-100x23.jpg 100w\" sizes=\"auto, (max-width: 515px) 100vw, 515px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>require vs import<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"264\" height=\"126\" class=\"wp-image-22614\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-3.jpg\" alt=\"es5 - es6 - require import\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-3.jpg 264w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-3-200x95.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-3-100x48.jpg 100w\" sizes=\"auto, (max-width: 264px) 100vw, 264px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">7. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t \u1ee9ng d\u1ee5ng React?<\/h3>\r\n\r\n\r\n\r\n<p>\u0110\u00e2y l\u00e0 c\u00e1c b\u01b0\u1edbc \u0111\u1ec3 t\u1ea1o m\u1ed9t \u1ee9ng d\u1ee5ng React:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong><a href=\"https:\/\/nodejs.org\/en\/download\/\" target=\"_blank\" rel=\"noreferrer noopener\">C\u00e0i \u0111\u1eb7t NodeJS<\/a><\/strong> tr\u00ean m\u00e1y t\u00ednh v\u00ec ch\u00fang ta c\u1ea7n npm \u0111\u1ec3 c\u00e0i \u0111\u1eb7t th\u01b0 vi\u1ec7n React. Npm l\u00e0 tr\u00ecnh qu\u1ea3n l\u00fd g\u00f3i n\u00fat ch\u1ee9a nhi\u1ec1u th\u01b0 vi\u1ec7n JavaScript, bao g\u1ed3m c\u1ea3 React.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"493\" class=\"wp-image-22645\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-640x493.png\" alt=\"reactjs - npm - nodejs\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs.png 640w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-300x231.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-200x154.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-768x592.png 768w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-1536x1184.png 1536w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-100x77.png 100w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-584x450.png 584w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-nodejs-1557x1200.png 1557w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>C\u00e0i \u0111\u1eb7t g\u00f3i <strong>create-react-app<\/strong> b\u1eb1ng command prompt ho\u1eb7c terminal.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-22639\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-28.jpg\" alt=\"create-react-app - npm - reactjs\" width=\"433\" height=\"167\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-28.jpg 337w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-28-300x116.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-28-200x77.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-28-100x39.jpg 100w\" sizes=\"auto, (max-width: 433px) 100vw, 433px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>C\u00e0i \u0111\u1eb7t m\u1ed9t tr\u00ecnh so\u1ea1n th\u1ea3o v\u0103n b\u1ea3n m\u00e0 b\u1ea1n ch\u1ecdn, nh\u01b0 VS Code ho\u1eb7c Sublime Text.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><em>Xem th\u00eam: <strong><a href=\"https:\/\/itviec.com\/blog\/hoc-nodejs\/?utm_medium=anchor_text&amp;utm_source=blog_07122021&amp;utm_campaign=daily\" target=\"_blank\" rel=\"noreferrer noopener\">15+ T\u00e0i li\u1ec7u h\u1ecdc NodeJS \u201cch\u1ea5t\u201d d\u00e0nh cho Developer<\/a><\/strong><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">8. S\u1ef1 ki\u1ec7n (Event) trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>S\u1ef1 ki\u1ec7n l\u00e0 m\u1ed9t h\u00e0nh \u0111\u1ed9ng m\u00e0 ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t b\u1eb1ng c\u00e1ch ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1ea5n ph\u00edm, nh\u1ea5p chu\u1ed9t, v.v.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>C\u00e1c s\u1ef1 ki\u1ec7n React \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean b\u1eb1ng camelCase, thay v\u00ec ch\u1eef vi\u1ebft th\u01b0\u1eddng, kh\u00f4ng in hoa trong HTML.<\/li>\r\n<li>V\u1edbi JSX, b\u1ea1n chuy\u1ec3n m\u1ed9t h\u00e0m l\u00e0m tr\u00ecnh x\u1eed l\u00fd s\u1ef1 ki\u1ec7n, thay v\u00ec m\u1ed9t chu\u1ed7i trong HTML.<\/li>\r\n<\/ul>\r\n<pre>&lt;Button onPress={lightItUp} \/&gt;<\/pre>\r\n\r\n\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">9. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t s\u1ef1 ki\u1ec7n (event) trong React?<\/h3>\r\n\r\n\r\n\r\n<p>M\u1ed9t s\u1ef1 ki\u1ec7n React c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o b\u1eb1ng c\u00e1ch nh\u01b0 sau:<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"495\" height=\"209\" class=\"wp-image-22616\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-5.jpg\" alt=\"s\u1ef1 ki\u1ec7n react - react event\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-5.jpg 495w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-5-300x127.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-5-200x84.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-5-100x42.jpg 100w\" sizes=\"auto, (max-width: 495px) 100vw, 495px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">10. S\u1ef1 ki\u1ec7n t\u1ed5ng h\u1ee3p (Synthetic event) trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>S\u1ef1 ki\u1ec7n t\u1ed5ng h\u1ee3p (Synthetic event) k\u1ebft h\u1ee3p ph\u1ea3n h\u1ed3i c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n g\u1ed1c c\u1ee7a tr\u00ecnh duy\u1ec7t kh\u00e1c nhau th\u00e0nh m\u1ed9t API, \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c s\u1ef1 ki\u1ec7n nh\u1ea5t qu\u00e1n tr\u00ean c\u00e1c tr\u00ecnh duy\u1ec7t kh\u00e1c nhau.<\/li>\r\n<li>\u1ee8ng d\u1ee5ng ph\u1ea3i nh\u1ea5t qu\u00e1n b\u1ea5t k\u1ec3 \u0111ang ch\u1ea1y tr\u00ean tr\u00ecnh duy\u1ec7t n\u00e0o. \u1ede \u0111\u00e2y, PreventDefault l\u00e0 m\u1ed9t s\u1ef1 ki\u1ec7n t\u1ed5ng h\u1ee3p.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"345\" height=\"225\" class=\"wp-image-22617\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-6.jpg\" alt=\"s\u1ef1 ki\u1ec7n t\u1ed5ng h\u1ee3p react - synthetic event react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-6.jpg 345w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-6-300x196.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-6-200x130.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-6-100x65.jpg 100w\" sizes=\"auto, (max-width: 345px) 100vw, 345px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">11. Gi\u1ea3i th\u00edch c\u00e1ch danh s\u00e1ch ho\u1ea1t \u0111\u1ed9ng trong React<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Ch\u00fang ta t\u1ea1o danh s\u00e1ch trong React nh\u01b0 c\u00e1ch l\u00e0m th\u00f4ng th\u01b0\u1eddng trong JavaScript. Danh s\u00e1ch hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u \u1edf \u0111\u1ecbnh d\u1ea1ng th\u1ee9 t\u1ef1.<\/li>\r\n<li>Vi\u1ec7c duy\u1ec7t danh s\u00e1ch \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u00e0m map ().<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"415\" height=\"259\" class=\"wp-image-22618\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-7.jpg\" alt=\"danh s\u00e1ch list react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-7.jpg 415w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-7-300x187.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-7-200x125.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-7-100x62.jpg 100w\" sizes=\"auto, (max-width: 415px) 100vw, 415px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">12. V\u00ec sao ph\u1ea3i s\u1eed d\u1ee5ng key trong danh s\u00e1ch?<\/h3>\r\n\r\n\r\n\r\n<p>Key r\u1ea5t quan tr\u1ecdng trong danh s\u00e1ch b\u1edfi v\u00ec:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Key l\u00e0 m\u1ed9t \u0111\u1ecbnh danh \u0111\u1ed9c nh\u1ea5t v\u00e0 n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh nh\u1eefng m\u1ee5c n\u00e0o \u0111\u00e3 thay \u0111\u1ed5i, \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ho\u1eb7c b\u1ecb x\u00f3a kh\u1ecfi danh s\u00e1ch.<\/li>\r\n<li>Key c\u0169ng gi\u00fap x\u00e1c \u0111\u1ecbnh th\u00e0nh ph\u1ea7n n\u00e0o c\u1ea7n \u0111\u01b0\u1ee3c render l\u1ea1i thay v\u00ec l\u1ea7n n\u00e0o c\u0169ng render l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n. Do \u0111\u00f3, key gi\u00fap l\u00e0m t\u0103ng hi\u1ec7u su\u1ea5t, v\u00ec ch\u1ec9 c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt m\u1edbi \u0111\u01b0\u1ee3c render l\u1ea1i.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">13. Form trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>React s\u1eed d\u1ee5ng form \u0111\u1ec3 cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng web.<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>S\u1eed d\u1ee5ng form, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c v\u1edbi \u1ee9ng d\u1ee5ng v\u00e0 nh\u1eadp th\u00f4ng tin c\u1ea7n thi\u1ebft b\u1ea5t c\u1ee9 khi n\u00e0o c\u1ea7n. Form ch\u1ee9a c\u00e1c ph\u1ea7n t\u1eed nh\u1ea5t \u0111\u1ecbnh, ch\u1eb3ng h\u1ea1n nh\u01b0 tr\u01b0\u1eddng v\u0103n b\u1ea3n, n\u00fat, h\u1ed9p ki\u1ec3m, n\u00fat radio, v.v.<\/li>\r\n<li>Form \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u t\u00e1c v\u1ee5 kh\u00e1c nhau nh\u01b0 x\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng, t\u00ecm ki\u1ebfm, l\u1ecdc, l\u1eadp ch\u1ec9 m\u1ee5c, v.v.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">14. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o form trong React?<\/h3>\r\n\r\n\r\n\r\n<p>Ch\u00fang ta t\u1ea1o form trong React b\u1eb1ng c\u00e1ch l\u00e0m nh\u01b0 sau:<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"437\" height=\"470\" class=\"wp-image-22619\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8.jpg\" alt=\"c\u00e1ch t\u1ea1o form trong react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8.jpg 437w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8-279x300.jpg 279w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8-186x200.jpg 186w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8-93x100.jpg 93w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-8-418x450.jpg 418w\" sizes=\"auto, (max-width: 437px) 100vw, 437px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0110o\u1ea1n code tr\u00ean s\u1ebd t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng \u0111\u1ea7u v\u00e0o c\u00f3 nh\u00e3n Name v\u00e0 n\u00fat g\u1eedi. N\u00f3 c\u0169ng s\u1ebd c\u1ea3nh b\u00e1o ng\u01b0\u1eddi d\u00f9ng khi nh\u1ea5n n\u00fat g\u1eedi.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">15. L\u00e0m sao \u0111\u1ec3 vi\u1ebft comment trong React?<\/h3>\r\n\r\n\r\n\r\n<p>V\u1ec1 c\u01a1 b\u1ea3n, c\u00f3 2 c\u00e1ch \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 vi\u1ebft comment:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Comment m\u1ed9t d\u00f2ng<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"435\" height=\"153\" class=\"wp-image-22620\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-9.jpg\" alt=\"comment m\u1ed9t d\u00f2ng - reactjs\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-9.jpg 435w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-9-300x106.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-9-200x70.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-9-100x35.jpg 100w\" sizes=\"auto, (max-width: 435px) 100vw, 435px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Comment nhi\u1ec1u d\u00f2ng<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"287\" height=\"249\" class=\"wp-image-22621\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-10.jpg\" alt=\"comment nhi\u1ec1u d\u00f2ng - reactjs\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-10.jpg 287w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-10-200x174.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-10-100x87.jpg 100w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">16. H\u00e0m m\u0169i t\u00ean (arrow function) l\u00e0 g\u00ec v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng trong React?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>H\u00e0m m\u0169i t\u00ean l\u00e0 m\u1ed9t c\u00e1ch vi\u1ebft ng\u1eafn g\u1ecdn c\u1ee7a m\u1ed9t h\u00e0m trong React.<\/li>\r\n<li>Kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i r\u00e0ng bu\u1ed9c \u2018this\u2019 b\u00ean trong ph\u01b0\u01a1ng th\u1ee9c kh\u1edfi t\u1ea1o khi s\u1eed d\u1ee5ng h\u00e0m m\u0169i t\u00ean. \u0110i\u1ec1u n\u00e0y ng\u0103n ch\u1eb7n c\u00e1c bug do s\u1eed d\u1ee5ng &#8216;this&#8217; trong c\u00e1c l\u1ec7nh Callback trong React.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"517\" height=\"341\" class=\"wp-image-22622\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-11.jpg\" alt=\"h\u00e0m m\u0169i t\u00ean react - arrow function reactjs\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-11.jpg 517w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-11-300x198.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-11-200x132.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-11-100x66.jpg 100w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">17. \u0110i\u1ec3m kh\u00e1c nhau gi\u1eefa React v\u00e0 React Native?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>React<\/strong><\/td>\r\n<td><strong>React Native<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>N\u0103m ph\u00e1t h\u00e0nh<\/strong><\/td>\r\n<td>2013<\/td>\r\n<td>2015<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>N\u1ec1n t\u1ea3ng<\/strong><\/td>\r\n<td>Web<\/td>\r\n<td>Mobile &#8211; Android, iOS<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>HTML<\/strong><\/td>\r\n<td>C\u00f3<\/td>\r\n<td>Kh\u00f4ng<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>CSS<\/strong><\/td>\r\n<td>C\u00f3<\/td>\r\n<td>Kh\u00f4ng<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Y\u00eau c\u1ea7u<\/strong><\/td>\r\n<td>JavaScript, HTML, CSS<\/td>\r\n<td>React.js<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">18. \u0110i\u1ec3m kh\u00e1c nhau gi\u1eefa React v\u00e0 Angular?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>Angular<\/strong><\/td>\r\n<td><strong>React<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>T\u00e1c gi\u1ea3<\/strong><\/td>\r\n<td>Google<\/td>\r\n<td>Facebook<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>M\u00f4 h\u00ecnh<\/strong><\/td>\r\n<td>M\u00f4 h\u00ecnh MVC to\u00e0n di\u1ec7n<\/td>\r\n<td>C\u00e1c l\u1edbp (layer) MVC<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>DOM<\/strong><\/td>\r\n<td>DOM th\u1ef1c<\/td>\r\n<td>DOM \u1ea3o (Virtual DOM)<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Li\u00ean k\u1ebft d\u1eef li\u1ec7u<\/strong><\/td>\r\n<td>Hai chi\u1ec1u<\/td>\r\n<td>\u0110\u01a1n chi\u1ec1u<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Rendering<\/strong><\/td>\r\n<td>Client-Side<\/td>\r\n<td>Server-Side<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Hi\u1ec7u su\u1ea5t<\/strong><\/td>\r\n<td>Kh\u00e1 ch\u1eadm<\/td>\r\n<td>Nhanh h\u01a1n nh\u1edd DOM \u1ea3o<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><em>Xem th\u00eam: <strong><a href=\"https:\/\/itviec.com\/viec-lam-it\/reactjs\/ha-noi?utm_medium=anchor_text&amp;utm_source=blog_07122021&amp;utm_campaign=daily\" target=\"_blank\" rel=\"noreferrer noopener\">Vi\u1ec7c l\u00e0m ReactJS &#8220;ch\u1ea5t&#8221; t\u1ea1i H\u00e0 N\u1ed9i<\/a><\/strong><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ReactJS_ve_Components\"><\/span><strong>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 Components<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 c\u00e1c th\u00e0nh ph\u1ea7n (components):<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">19. Component trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>Components l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng React n\u00e0o v\u00e0 m\u1ed9t \u1ee9ng d\u1ee5ng \u0111\u01a1n l\u1ebb th\u01b0\u1eddng bao g\u1ed3m nhi\u1ec1u components. M\u1ed9t component v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. N\u00f3 chia giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng th\u00e0nh c\u00e1c ph\u1ea7n \u0111\u1ed9c l\u1eadp, c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd ri\u00eang.<\/p>\r\n\r\n\r\n\r\n<p>C\u00f3 hai lo\u1ea1i component trong React:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Functional Components: <\/strong>Lo\u1ea1i components n\u00e0y kh\u00f4ng c\u00f3 state c\u1ee7a ri\u00eang ch\u00fang v\u00e0 ch\u1ec9 ch\u1ee9a c\u00e1c ph\u01b0\u01a1ng th\u1ee9c render, do \u0111\u00f3 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>stateless components<\/strong>. Ch\u00fang c\u00f3 th\u1ec3 l\u1ea5y d\u1eef li\u1ec7u t\u1eeb c\u00e1c components kh\u00e1c l\u00e0m props (properties &#8211; thu\u1ed9c t\u00ednh).<\/li>\r\n<\/ul>\r\n<pre>function Greeting(props) {<br \/>return &lt;h1&gt;Welcome to {props.name}&lt;\/h1&gt;;<br \/>}<\/pre>\r\n\r\n\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Class Components: <\/strong>Lo\u1ea1i components n\u00e0y c\u00f3 th\u1ec3 gi\u1eef v\u00e0 qu\u1ea3n l\u00fd state c\u1ee7a ri\u00eang ch\u00fang v\u00e0 c\u00f3 m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c render ri\u00eang \u0111\u1ec3 tr\u1ea3 v\u1ec1 JSX tr\u00ean m\u00e0n h\u00ecnh. Ch\u00fang c\u0169ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <strong>stateful components<\/strong> v\u00ec ch\u00fang c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t state.<\/li>\r\n<\/ul>\r\n<pre>class Greeting extends React.Component {<br \/>render() {<br \/> \u00a0return &lt;h1&gt;Welcome to {this.props.name}&lt;\/h1&gt;;<br \/> }<br \/>}<\/pre>\r\n\r\n\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">20. C\u00e1ch s\u1eed d\u1ee5ng h\u00e0m render() trong React?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>M\u1ed7i component b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 m\u1ed9t h\u00e0m render(). H\u00e0m n\u00e0y tr\u1ea3 v\u1ec1 HTML m\u00e0 s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb trong th\u00e0nh ph\u1ea7n.<\/li>\r\n<li>N\u1ebfu b\u1ea1n c\u1ea7n hi\u1ec3n th\u1ecb nhi\u1ec1u h\u01a1n m\u1ed9t element, t\u1ea5t c\u1ea3 c\u00e1c element ph\u1ea3i n\u1eb1m trong m\u1ed9t tag cha nh\u01b0 &lt;div&gt;, &lt;form&gt;.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"406\" height=\"214\" class=\"wp-image-22623\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-12.jpg\" alt=\"h\u00e0m render() react - render() function reactjs\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-12.jpg 406w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-12-300x158.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-12-200x105.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-12-100x53.jpg 100w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">21. State trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>State l\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng (object) React t\u00edch h\u1ee3p \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1ee9a d\u1eef li\u1ec7u ho\u1eb7c th\u00f4ng tin v\u1ec1 component. State trong m\u1ed9t component c\u00f3 th\u1ec3 thay \u0111\u1ed5i theo th\u1eddi gian v\u00e0 b\u1ea5t c\u1ee9 khi n\u00e0o n\u00f3 thay \u0111\u1ed5i, component s\u1ebd render l\u1ea1i.<\/li>\r\n<li>S\u1ef1 thay \u0111\u1ed5i state c\u00f3 th\u1ec3 x\u1ea3y ra d\u01b0\u1edbi d\u1ea1ng ph\u1ea3n h\u1ed3i \u0111\u1ed1i v\u1edbi h\u00e0nh \u0111\u1ed9ng c\u1ee7a ng\u01b0\u1eddi d\u00f9ng ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n do h\u1ec7 th\u1ed1ng t\u1ea1o. State x\u00e1c \u0111\u1ecbnh h\u00e0nh vi c\u1ee7a component v\u00e0 c\u00e1ch component s\u1ebd render.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">22. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n tri\u1ec3n khai State trong React?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>State gi\u1eef data m\u00e0 m\u1ed9t component s\u1ebd hi\u1ec3n th\u1ecb tr\u00ean \u1ee9ng d\u1ee5ng web.<\/li>\r\n<li>Ta truy c\u1eadp v\u00e0o state properties nh\u01b0 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y:<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"580\" height=\"223\" class=\"wp-image-22624\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-13.jpg\" alt=\"state react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-13.jpg 580w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-13-300x115.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-13-200x77.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-13-100x38.jpg 100w\" sizes=\"auto, (max-width: 580px) 100vw, 580px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">23. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 b\u1ea1n c\u1eadp nh\u1eadt State c\u1ee7a component trong React?<\/h3>\r\n\r\n\r\n\r\n<p>B\u1ea1n c\u00f3 th\u1ec3 c\u1eadp nh\u1eadt State c\u1ee7a m\u1ed9t component b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng \u2018setState ()\u2019 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n:<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"579\" height=\"370\" class=\"wp-image-22625\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-14.jpg\" alt=\"state react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-14.jpg 579w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-14-300x192.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-14-200x128.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-14-100x64.jpg 100w\" sizes=\"auto, (max-width: 579px) 100vw, 579px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">24. Props trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Props l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a t\u1eeb Properties. \u0110\u00e2y l\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng t\u00edch h\u1ee3p trong React, l\u01b0u tr\u1eef gi\u00e1 tr\u1ecb c\u1ee7a c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a tag v\u00e0 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c thu\u1ed9c t\u00ednh HTML.<\/li>\r\n<li>Props cung c\u1ea5p c\u00e1ch \u0111\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1eeb component n\u00e0y sang component kh\u00e1c. C\u00e1c props \u0111\u01b0\u1ee3c truy\u1ec1n cho component theo c\u00e1ch gi\u1ed1ng nh\u01b0 c\u00e1c arguments \u0111\u01b0\u1ee3c truy\u1ec1n trong m\u1ed9t h\u00e0m.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">25. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 truy\u1ec1n props gi\u1eefa c\u00e1c components?<\/h3>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"578\" height=\"252\" class=\"wp-image-22638\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-27.jpeg\" alt=\"props - components - react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-27.jpeg 578w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-27-300x131.jpeg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-27-200x87.jpeg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-27-100x44.jpeg 100w\" sizes=\"auto, (max-width: 578px) 100vw, 578px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">26. \u0110i\u1ec3m kh\u00e1c nhau gi\u1eefa State v\u00e0 Props?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>State<\/strong><\/td>\r\n<td><strong>Props<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>C\u00e1ch d\u00f9ng<\/strong><\/td>\r\n<td>Ch\u1ee9a d\u1eef li\u1ec7u v\u1ec1 components<\/td>\r\n<td>Cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u t\u1eeb component sang nh\u1eefng components kh\u00e1c nh\u01b0 m\u1ed9t argument<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Kh\u1ea3 n\u0103ng thay \u0111\u1ed5i (Mutability)<\/strong><\/td>\r\n<td>C\u00f3 th\u1ec3 thay \u0111\u1ed5i<\/td>\r\n<td>Kh\u00f4ng th\u1ec3 thay \u0111\u1ed5i<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Ch\u1ec9 \u0111\u1ecdc (Read-Only)<\/strong><\/td>\r\n<td>C\u00f3 th\u1ec3 thay \u0111\u1ed5i<\/td>\r\n<td>L\u00e0 read-only<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Component con<\/strong><\/td>\r\n<td>Component con kh\u00f4ng th\u1ec3 truy c\u1eadp<\/td>\r\n<td>Component con c\u00f3 th\u1ec3 truy c\u1eadp<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Stateless components<\/strong><\/td>\r\n<td>Kh\u00f4ng th\u1ec3 c\u00f3 state<\/td>\r\n<td>C\u00f3 th\u1ec3 c\u00f3 props<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">27. Higher-order component (HOC) trong React l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>Higher-order component (HOC) ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t th\u00f9ng ch\u1ee9a cho c\u00e1c components kh\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap gi\u1eef cho c\u00e1c components \u201cg\u1ecdn g\u00e0ng\u201d v\u00e0 s\u1eb5n s\u00e0ng t\u00e1i s\u1eed d\u1ee5ng. HOC th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi nhi\u1ec1u components ph\u1ea3i s\u1eed d\u1ee5ng m\u1ed9t logic chung.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">28. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 nh\u00fang hai ho\u1eb7c nhi\u1ec1u component th\u00e0nh m\u1ed9t?<\/h3>\r\n\r\n\r\n\r\n<p>B\u1ea1n c\u00f3 th\u1ec3 nh\u00fang hai ho\u1eb7c nhi\u1ec1u components v\u00e0o th\u00e0nh m\u1ed9t b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y:<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"402\" height=\"420\" class=\"wp-image-22626\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-15.jpg\" alt=\"nh\u00fang hai ho\u1eb7c nhi\u1ec1u component th\u00e0nh m\u1ed9t trong react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-15.jpg 402w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-15-287x300.jpg 287w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-15-191x200.jpg 191w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-15-96x100.jpg 96w\" sizes=\"auto, (max-width: 402px) 100vw, 402px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">29. \u0110i\u1ec3m kh\u00e1c nhau gi\u1eefa Class components v\u00e0 Functional components?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>Class Components<\/strong><\/td>\r\n<td><strong>Functional Components<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>State<\/strong><\/td>\r\n<td>C\u00f3 th\u1ec3 gi\u1eef ho\u1eb7c qu\u1ea3n l\u00fd state<\/td>\r\n<td>Kh\u00f4ng th\u1ec3 gi\u1eef ho\u1eb7c qu\u1ea3n l\u00fd state<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>\u0110\u1ed9 \u0111\u01a1n gi\u1ea3n<\/strong><\/td>\r\n<td>Ph\u1ee9c t\u1ea1p h\u01a1n so v\u1edbi stateless component<\/td>\r\n<td>\u0110\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 hi\u1ec3u<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Lifecycle methods<\/strong><\/td>\r\n<td>C\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi t\u1ea5t c\u1ea3 lifecycle methods<\/td>\r\n<td>Kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi lifecycle method n\u00e0o<\/td>\r\n<\/tr>\r\n<tr>\r\n<td><strong>Kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng<\/strong><\/td>\r\n<td>C\u00f3 th\u1ec3<\/td>\r\n<td>Kh\u00f4ng th\u1ec3<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>V\u00ed d\u1ee5 Class components:<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"423\" height=\"145\" class=\"wp-image-22627\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-16.jpg\" alt=\"class components react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-16.jpg 423w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-16-300x103.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-16-200x69.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-16-100x34.jpg 100w\" sizes=\"auto, (max-width: 423px) 100vw, 423px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>V\u00ed d\u1ee5 Functional components:<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"386\" height=\"75\" class=\"wp-image-22628\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-17.jpg\" alt=\"functional components react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-17.jpg 386w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-17-300x58.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-17-200x39.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-17-100x19.jpg 100w\" sizes=\"auto, (max-width: 386px) 100vw, 386px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">30. Gi\u1ea3i th\u00edch lifecycle methods c\u1ee7a components<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>getInitialState()<\/strong>: H\u00e0m n\u00e0y di\u1ec5n ra tr\u01b0\u1edbc khi t\u1ea1o component.<\/li>\r\n<li><strong>componentDidMount()<\/strong>: Di\u1ec5n ra khi component \u0111\u01b0\u1ee3c render v\u00e0 \u0111\u1eb7t trong DOM.<\/li>\r\n<li><strong>shouldComponentUpdate()<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t khi m\u1ed9t component x\u00e1c \u0111\u1ecbnh c\u00e1c thay \u0111\u1ed5i v\u1edbi DOM v\u00e0 tr\u1ea3 v\u1ec1 gi\u00e1 tr\u1ecb \u201ctrue&#8221; ho\u1eb7c \u201cfalse&#8221; d\u1ef1a tr\u00ean nh\u1eefng \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh.<\/li>\r\n<li><strong>componentDidUpdate()<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t ngay l\u1eadp t\u1ee9c sau khi render.<\/li>\r\n<li><strong>componentWillUnmount()<\/strong>: \u0110\u01b0\u1ee3c k\u00edch ho\u1ea1t ngay l\u1eadp t\u1ee9c tr\u01b0\u1edbc khi m\u1ed9t component b\u1ecb h\u1ee7y v\u00e0 th\u00e1o v\u0129nh vi\u1ec5n.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><em>Xem th\u00eam: <a href=\"https:\/\/itviec.com\/viec-lam-it\/reactjs\/ha-noi?utm_medium=anchor_text_mid&amp;utm_source=blog&amp;utm_campaign=viec_lam_reactjs_tai_ha_noi&amp;utm_content=reactjs_la_gi\" target=\"_blank\" rel=\"noopener\"><strong>Vi\u1ec7c l\u00e0m ReactJS t\u1ea1i H\u00e0 N\u1ed9i<\/strong><\/a><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ReactJS_ve_ReactJS_Redux\"><\/span><strong>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 ReactJS Redux<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 ReactJS Redux:<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">31. Redux l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>Redux l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n JavaScript m\u1edf \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i \u1ee9ng d\u1ee5ng. React s\u1eed d\u1ee5ng Redux \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. \u0110\u00e2y l\u00e0 v\u00f9ng ch\u1ee9a tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c cho c\u00e1c \u1ee9ng d\u1ee5ng JavaScript v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i c\u1ee7a to\u00e0n b\u1ed9 \u1ee9ng d\u1ee5ng.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">32. C\u00e1c components c\u1ee7a Redux l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Store<\/strong>: Gi\u1eef c\u00e1c state c\u1ee7a \u1ee9ng d\u1ee5ng.<\/li>\r\n<li><strong>Action<\/strong>: Ngu\u1ed3n th\u00f4ng tin c\u1ee7a store.<\/li>\r\n<li><strong>Reducer<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1ch m\u00e0 state c\u1ee7a \u1ee9ng d\u1ee5ng thay \u0111\u1ed5i theo c\u00e1c h\u00e0nh \u0111\u1ed9ng \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn store.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-22629\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-18.jpg\" alt=\"components reactjs redux react\" width=\"392\" height=\"121\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-18.jpg 392w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-18-300x93.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-18-200x62.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-18-100x31.jpg 100w\" sizes=\"auto, (max-width: 392px) 100vw, 392px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">33. Flux l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Flux l\u00e0 ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m m\u00e0 Facebook d\u00f9ng \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng web. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p x\u1eed l\u00fd d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p b\u00ean trong \u1ee9ng d\u1ee5ng ph\u00eda m\u00e1y kh\u00e1ch v\u00e0 qu\u1ea3n l\u00fd c\u00e1c chi\u1ec1u d\u1eef li\u1ec7u trong \u1ee9ng d\u1ee5ng React.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>C\u00f3 m\u1ed9t ngu\u1ed3n d\u1eef li\u1ec7u duy nh\u1ea5t (store) v\u00e0 vi\u1ec7c k\u00edch ho\u1ea1t c\u00e1c h\u00e0nh \u0111\u1ed9ng nh\u1ea5t \u0111\u1ecbnh l\u00e0 c\u00e1ch duy nh\u1ea5t \u0111\u1ec3 c\u1eadp nh\u1eadt ch\u00fang. Action g\u1ecdi dispatcher, v\u00e0 sau \u0111\u00f3 c\u1eeda h\u00e0ng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t v\u00e0 c\u1eadp nh\u1eadt d\u1eef li\u1ec7u c\u1ee7a ri\u00eang ch\u00fang sao cho ph\u00f9 h\u1ee3p.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"392\" height=\"121\" class=\"wp-image-22630\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-19.jpg\" alt=\"flux l\u00e0 g\u00ec - reactjs redux\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-19.jpg 392w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-19-300x93.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-19-200x62.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-19-100x31.jpg 100w\" sizes=\"auto, (max-width: 392px) 100vw, 392px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>Khi m\u1ed9t dispatch \u0111\u00e3 \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t v\u00e0 store c\u1eadp nh\u1eadt, n\u00f3 s\u1ebd ph\u00e1t ra m\u1ed9t s\u1ef1 ki\u1ec7n thay \u0111\u1ed5i m\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 xem c\u00f3 th\u1ec3 render t\u01b0\u01a1ng \u1ee9ng theo \u0111\u00f3.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"417\" height=\"346\" class=\"wp-image-22631\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-20.jpg\" alt=\"flux l\u00e0 g\u00ec - reactjs red\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-20.jpg 417w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-20-300x249.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-20-200x166.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-20-100x83.jpg 100w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/>\r\n<figcaption>View s\u1ebd \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt khi state c\u1ee7a Store thay \u0111\u1ed5i. Action c\u1ee7a user t\u1ea1i View s\u1ebd \u0111\u01b0\u1ee3c g\u1eedi \u0111\u1ebfn dispatcher \u0111\u1ec3 x\u1eed l\u00fd.<\/figcaption>\r\n<\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">34. \u0110i\u1ec3m kh\u00e1c nhau gi\u1eefa Redux v\u00e0 Flux?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>Redux<\/strong><\/td>\r\n<td><strong>Flux<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>1.<\/td>\r\n<td>Redux l\u00e0 th\u01b0 vi\u1ec7n m\u00e3 ngu\u1ed3n m\u1edf c\u1ee7a JavaScript \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i \u1ee9ng d\u1ee5ng<\/td>\r\n<td>Flux l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac, kh\u00f4ng ph\u1ea3i l\u00e0 framework hay th\u01b0 vi\u1ec7n<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2.<\/td>\r\n<td>Tr\u1ea1ng th\u00e1i c\u1ee7a store l\u00e0 b\u1ea5t bi\u1ebfn<\/td>\r\n<td>Tr\u1ea1ng th\u00e1i c\u1ee7a store l\u00e0 t\u00f9y bi\u1ebfn<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3.<\/td>\r\n<td>Ch\u1ec9 c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t store<\/td>\r\n<td>C\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u store<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4.<\/td>\r\n<td>S\u1eed d\u1ee5ng reducer<\/td>\r\n<td>S\u1eed d\u1ee5ng dispatcher<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ReactJS_ve_React_Router\"><\/span><strong>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 React Router<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 React Router:<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">35. React Router l\u00e0 g\u00ec?<\/h3>\r\n\r\n\r\n\r\n<p>React Router l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n \u0111\u1ecbnh tuy\u1ebfn \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng l\u00ean tr\u00ean React, \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c tuy\u1ebfn trong m\u1ed9t \u1ee9ng d\u1ee5ng React.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">36. V\u00ec sao ta c\u1ea7n s\u1eed d\u1ee5ng React Router?<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>React Router duy tr\u00ec s\u1ef1 nh\u1ea5t qu\u00e1n c\u1ee7a c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng web single-page.<\/li>\r\n<li>React Router cho ph\u00e9p nhi\u1ec1u ch\u1ebf \u0111\u1ed9 xem trong m\u1ed9t \u1ee9ng d\u1ee5ng b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh nhi\u1ec1u tuy\u1ebfn trong \u1ee9ng d\u1ee5ng React.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">37. \u0110\u1ecbnh tuy\u1ebfn React (React routing) kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o so v\u1edbi \u0111\u1ecbnh tuy\u1ebfn quy \u01b0\u1edbc (conventional routing)?<\/h3>\r\n\r\n\r\n\r\n<figure class=\"wp-block-table\">\r\n<table>\r\n<tbody>\r\n<tr>\r\n<td>\u00a0<\/td>\r\n<td><strong>\u0110\u1ecbnh tuy\u1ebfn React<\/strong><\/td>\r\n<td><strong>\u0110\u1ecbnh tuy\u1ebfn quy \u01b0\u1edbc<\/strong><\/td>\r\n<\/tr>\r\n<tr>\r\n<td>1.<\/td>\r\n<td>Trang HTML \u0111\u01a1n<\/td>\r\n<td>M\u1ed7i view l\u00e0 m\u1ed9t t\u1ec7p HTML m\u1edbi<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>2.<\/td>\r\n<td>Ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng nhi\u1ec1u ch\u1ebf \u0111\u1ed9 xem trong c\u00f9ng m\u1ed9t t\u1ec7p<\/td>\r\n<td>Ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng nhi\u1ec1u t\u1ec7p cho m\u1ed7i ch\u1ebf \u0111\u1ed9 xem<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>3.<\/td>\r\n<td>Trang kh\u00f4ng l\u00e0m m\u1edbi v\u00ec n\u00f3 l\u00e0 m\u1ed9t t\u1ec7p duy nh\u1ea5t<\/td>\r\n<td>Trang l\u00e0m m\u1edbi m\u1ed7i khi ng\u01b0\u1eddi d\u00f9ng \u0111i\u1ec1u h\u01b0\u1edbng<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>4.<\/td>\r\n<td>C\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t<\/td>\r\n<td>Hi\u1ec7u su\u1ea5t ch\u1eadm h\u01a1n<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/figure>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><em>Xem th\u00eam: <strong><a href=\"https:\/\/itviec.com\/blog\/react-native-la-gi\/?utm_medium=anchor_text&amp;utm_source=blog_07122021&amp;utm_campaign=daily\" target=\"_blank\" rel=\"noreferrer noopener\">React Native l\u00e0 g\u00ec? 20+ T\u00e0i li\u1ec7u h\u1ecdc React Native t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao<\/a><\/strong><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">38. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 tri\u1ec3n khai React routing?<\/h3>\r\n\r\n\r\n\r\n<p>B\u1ea1n c\u00f3 th\u1ec3 tri\u1ec3n khai \u0111\u1ecbnh tuy\u1ebfn trong \u1ee9ng d\u1ee5ng React b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p sau.<\/p>\r\n\r\n\r\n\r\n<p>Gi\u1ea3 s\u1eed b\u1ea1n c\u00f3 c\u00e1c components <strong>App<\/strong>, <strong>About<\/strong>, v\u00e0 <strong>Contact<\/strong> trong \u1ee9ng d\u1ee5ng:<\/p>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"419\" height=\"205\" class=\"wp-image-22633\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-22.jpg\" alt=\"react routing\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-22.jpg 419w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-22-300x147.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-22-200x98.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-22-100x49.jpg 100w\" sizes=\"auto, (max-width: 419px) 100vw, 419px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cau_hoi_phong_van_ReactJS_ve_Styling\"><\/span><strong>C\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 Styling<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS v\u1ec1 Styling ReactJS:<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">39. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 style components trong React?<\/h3>\r\n\r\n\r\n\r\n<p>C\u00f3 m\u1ed9t v\u00e0i c\u00e1ch \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 style components trong React:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>Inline Styling<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"465\" height=\"294\" class=\"wp-image-22634\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-23.jpg\" alt=\"reactjs styling - Inline Styling\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-23.jpg 465w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-23-300x190.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-23-200x126.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-23-100x63.jpg 100w\" sizes=\"auto, (max-width: 465px) 100vw, 465px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>JavaScript Object<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"458\" height=\"388\" class=\"wp-image-22635\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-24.jpg\" alt=\"reactjs styling - JavaScript Object\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-24.jpg 458w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-24-300x254.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-24-200x169.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-24-100x85.jpg 100w\" sizes=\"auto, (max-width: 458px) 100vw, 458px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>CSS Stylesheet<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"539\" height=\"329\" class=\"wp-image-22636\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-25.jpg\" alt=\"reactjs styling - CSS Stylesheet\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-25.jpg 539w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-25-300x183.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-25-200x122.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-25-100x61.jpg 100w\" sizes=\"auto, (max-width: 539px) 100vw, 539px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\">40. Gi\u1ea3i th\u00edch c\u00e1ch s\u1eed d\u1ee5ng CSS modules trong React<\/h3>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>T\u1ec7p CSS module \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi .module.css extension<\/li>\r\n<li>CSS b\u00ean trong m\u1ed9t t\u1ec7p module ch\u1ec9 c\u00f3 s\u1eb5n cho components \u0111\u00e3 nh\u1eadp n\u00f3, v\u00ec v\u1eady kh\u00f4ng c\u00f3 xung \u0111\u1ed9t \u0111\u1eb7t t\u00ean trong khi style cho c\u00e1c components.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"473\" height=\"71\" class=\"wp-image-22637\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-26.jpg\" alt=\"css modules react\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-26.jpg 473w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-26-300x45.jpg 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-26-200x30.jpg 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-cau-hoi-phong-van-26-100x15.jpg 100w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p>\u0110\u00e2y l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao th\u01b0\u1eddng g\u1eb7p trong c\u00e1c cu\u1ed9c ph\u1ecfng v\u1ea5n. Hy v\u1ecdng nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS n\u00e0y s\u1ebd h\u1eefu \u00edch trong vi\u1ec7c v\u01b0\u1ee3t qua v\u00f2ng ph\u1ecfng v\u1ea5n c\u1ee7a b\u1ea1n. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng chinh ph\u1ee5c bu\u1ed5i ph\u1ecfng v\u1ea5n s\u1eafp t\u1edbi!<\/p>\r\n<p>\r\n\r\n<\/p>\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p><em>Xem th\u00eam: <strong><a href=\"https:\/\/itviec.com\/viec-lam-it\/reactjs?utm_medium=anchor_text_low&amp;utm_source=blog&amp;utm_campaign=viec_lam_reactjs&amp;utm_content=reactjs_la_gi\" target=\"_blank\" rel=\"noopener\">Vi\u1ec7c l\u00e0m ReactJS<\/a> &#8220;ch\u1ea5t&#8221; tr\u00ean ITviec<\/strong><\/em><\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" class=\"wp-image-5668 aligncenter\" src=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png\" alt=\"robby-2\" srcset=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2.png 300w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-200x200.png 200w, https:\/\/itviec.com\/blog\/wp-content\/uploads\/2015\/07\/Robby2-60x60.png 60w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n<p id=\"block-bdf220a1-3635-4794-9101-81d879939b92\" class=\"has-text-align-center\" style=\"text-align: center;\"><strong>B\u1ea1n th\u1ea5y b\u00e0i vi\u1ebft hay v\u00e0 c\u1ea7n thi\u1ebft v\u1edbi nhi\u1ec1u ng\u01b0\u1eddi? \u0110\u1eebng ng\u1ea1i nh\u1ea5n n\u00fat Share b\u00ean d\u01b0\u1edbi nh\u00e9.<\/strong><\/p>\r\n\r\n\r\n\r\n<p id=\"block-a1315aab-406f-48df-97fc-6b9584e6e134\" class=\"has-text-align-center\" style=\"text-align: center;\"><strong>V\u00e0 \u0111\u1eebng qu\u00ean tham kh\u1ea3o <a href=\"http:\/\/itviec.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">vi\u1ec7c l\u00e0m IT<\/a> tr\u00ean ITviec<\/strong>!<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>ReactJS l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee7 \u0111\u1ec1 \u201cn\u00f3ng h\u1ed5i&#8221; trong ng\u00e0nh IT hi\u1ec7n nay. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, React l\u00e0 c\u00f4ng ngh\u1ec7 front-end ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00f4ng ty s\u1eed d\u1ee5ng. N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho bu\u1ed5i ph\u1ecfng v\u1ea5n s\u1eafp t\u1edbi, sau \u0111\u00e2y l\u00e0 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n [&hellip;]<\/p>\n","protected":false},"author":110,"featured_media":22672,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[105,103],"tags":[],"class_list":["post-22596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-phong-van-it","category-ung-tuyen-va-thang-tien"],"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>ReactJS l\u00e0 g\u00ec? Top 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS ph\u1ed5 bi\u1ebfn nh\u1ea5t<\/title>\n<meta name=\"description\" content=\"ReactJS l\u00e0 m\u1ed9t trong nh\u1eefng c\u00f4ng ngh\u1ec7 &quot;hot&quot; nh\u1ea5t ng\u00e0nh IT hi\u1ec7n nay. Luy\u1ec7n t\u1eadp cho bu\u1ed5i ph\u1ecfng v\u1ea5n s\u1eafp t\u1edbi v\u1edbi 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS sau.\" \/>\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\/cau-hoi-phong-van-reactjs-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 40 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS t\u1eeb c\u01a1 b\u1ea3n \u0111\u1ebfn n\u00e2ng cao\" \/>\n<meta property=\"og:description\" content=\"ReactJS l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ee7 \u0111\u1ec1 \u201cn\u00f3ng h\u1ed5i&quot; trong ng\u00e0nh IT hi\u1ec7n nay. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, React l\u00e0 c\u00f4ng ngh\u1ec7 front-end ph\u1ed5 bi\u1ebfn nh\u1ea5t m\u00e0 ng\u00e0y c\u00e0ng\" \/>\n<meta property=\"og:url\" content=\"https:\/\/itviec.com\/blog\/cau-hoi-phong-van-reactjs-la-gi\/\" \/>\n<meta property=\"og:site_name\" content=\"ITviec Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ITviec\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-07T06:48:34+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-09-29T15:55:52+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/itviec.com\/blog\/wp-content\/uploads\/2021\/12\/reactjs-la-gi-phong-van-thumbnail.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"337\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Taha Sufiyan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ITviec\" \/>\n<meta name=\"twitter:site\" content=\"@ITviec\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Taha Sufiyan\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"25 ph\u00fat\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"ReactJS l\u00e0 g\u00ec? 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