{"id":50499,"date":"2023-12-17T07:54:17","date_gmt":"2023-12-17T07:54:17","guid":{"rendered":"https:\/\/masterskills.org\/blog\/nhung-cau-hoi-phong-van-reactjs-danh-cho-moi-vi-tri-ung-tuyen.html"},"modified":"2023-12-17T07:54:17","modified_gmt":"2023-12-17T07:54:17","slug":"nhung-cau-hoi-phong-van-reactjs-danh-cho-moi-vi-tri-ung-tuyen","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/nhung-cau-hoi-phong-van-reactjs-danh-cho-moi-vi-tri-ung-tuyen.html","title":{"rendered":"Nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS d\u00e0nh cho m\u1ecdi v\u1ecb tr\u00ed \u1ee9ng tuy\u1ec3n"},"content":{"rendered":"
\n

React l\u00e0 m\u1ed9t t\u1eeb th\u00f4ng d\u1ee5ng trong gi\u1edbi IT ng\u00e0y 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 v\u1edbi ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00f4ng ty \u0111\u00e3 v\u00e0 \u0111ang s\u1eed d\u1ee5ng.\u00a0<\/p>\n

N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho m\u1ed9t cu\u1ed9c ph\u1ecfng v\u1ea5n xin vi\u1ec7c, \u0111\u00e2y l\u00e0 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS <\/strong>ph\u00f9 h\u1ee3p v\u1edbi b\u1ea1n. 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 do Masterskills t\u1ed5ng h\u1ee3p?<\/p>\n

B\u1ed9 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n v\u1ec1 ReactJS d\u00e0nh cho Freshers<\/strong><\/h2>\n

\u0110\u1ea7u ti\u00ean, ch\u00ednh l\u00e0 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n <\/strong>ReactJS<\/strong> d\u00e0nh cho c\u00e1c Freshers. C\u00e1c c\u00e2u h\u1ecfi n\u00e0y nh\u1eb1m m\u1ee5c \u0111\u00edch ki\u1ec3m tra c\u00e1c ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 React c\u0169ng nh\u01b0 c\u00e1c th\u00e0nh ph\u1ea7n li\u00ean quan.<\/p>\n

React l\u00e0 g\u00ec?<\/strong><\/h3>\n

React l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n JavaScript m\u00e3 ngu\u1ed3n m\u1edf v\u00e0 front-end r\u1ea5t h\u1eefu \u00edch trong vi\u1ec7c ph\u00e1t tri\u1ec3n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng d\u00e0nh ri\u00eang cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f3 m\u1ed9t trang duy nh\u1ea5t. N\u00f3 h\u1eefu \u00edch trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng (UI) ph\u1ee9c t\u1ea1p v\u00e0 c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng c\u1ee7a c\u00e1c \u1ee9ng d\u1ee5ng web v\u00e0 di \u0111\u1ed9ng v\u00ec n\u00f3 tu\u00e2n theo ph\u01b0\u01a1ng ph\u00e1p component-based. T\u1ee9c l\u00e0 h\u01b0\u1edbng ti\u1ebfp c\u1eadn theo t\u1eebng th\u00e0nh ph\u1ea7n c\u1ea5u t\u1ea1o c\u1ee7a \u0111o\u1ea1n m\u00e3.<\/p>\n

C\u00e1c t\u00ednh n\u0103ng quan tr\u1ecdng c\u1ee7a React bao g\u1ed3m:<\/p>\n

    \n
  • H\u1ed7 tr\u1ee3 k\u1ebft xu\u1ea5t ph\u00eda m\u00e1y ch\u1ee7.<\/li>\n
  • S\u1eed d\u1ee5ng DOM \u1ea3o thay v\u00ec DOM th\u1ef1c (M\u00f4 h\u00ecnh \u0111\u1ed1i t\u01b0\u1ee3ng d\u1eef li\u1ec7u) v\u00ec c\u00e1c thao t\u00e1c RealDOM r\u1ea5t t\u1ed1n k\u00e9m.<\/li>\n
  • Tu\u00e2n theo r\u00e0ng bu\u1ed9c d\u1eef li\u1ec7u m\u1ed9t chi\u1ec1u ho\u1eb7c lu\u1ed3ng d\u1eef li\u1ec7u.<\/li>\n
  • S\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng ho\u1eb7c c\u00f3 th\u1ec3 k\u1ebft h\u1ee3p \u0111\u1ec3 ph\u00e1t tri\u1ec3n ch\u1ebf \u0111\u1ed9 xem.<\/li>\n<\/ul>\n

    Nh\u1eefng h\u1ea1n ch\u1ebf c\u1ee7a React l\u00e0 g\u00ec?<\/strong><\/h3>\n

    M\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf c\u1ee7a React bao g\u1ed3m:<\/p>\n

      \n
    • React kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t framework to\u00e0n di\u1ec7n v\u00ec n\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n.<\/li>\n
    • C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a React r\u1ea5t nhi\u1ec1u v\u00e0 s\u1ebd m\u1ea5t th\u1eddi gian \u0111\u1ec3 n\u1eafm b\u1eaft \u0111\u1ea7y \u0111\u1ee7 l\u1ee3i \u00edch c\u1ee7a t\u1ea5t c\u1ea3.<\/li>\n
    • C\u00e1c l\u1eadp tr\u00ecnh vi\u00ean m\u1edbi b\u1eaft \u0111\u1ea7u c\u00f3 th\u1ec3 kh\u00f3 n\u1eafm b\u1eaft c\u00e1c kh\u00e1i ni\u1ec7m v\u1ec1 React.<\/li>\n
    • Vi\u1ec7c m\u00e3 h\u00f3a c\u00f3 th\u1ec3 tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p v\u00ec n\u00f3 s\u1ebd s\u1eed d\u1ee5ng khu\u00f4n m\u1eabu n\u1ed9i tuy\u1ebfn v\u00e0 JSX.<\/li>\n<\/ul>\n

      L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng React l\u00e0 g\u00ec?<\/strong><\/h3>\n
        \n
      • S\u1eed d\u1ee5ng Virtual DOM \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3: React s\u1eed d\u1ee5ng DOM \u1ea3o \u0111\u1ec3 hi\u1ec3n th\u1ecb ch\u1ebf \u0111\u1ed9 xem. DOM \u1ea3o l\u00e0 m\u1ed9t \u0111\u1ea1i di\u1ec7n \u1ea3o c\u1ee7a DOM th\u1ef1c. M\u1ed7i khi d\u1eef li\u1ec7u thay \u0111\u1ed5i trong \u1ee9ng d\u1ee5ng, m\u1ed9t DOM \u1ea3o m\u1edbi s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra. T\u1ea1o DOM \u1ea3o nhanh h\u01a1n nhi\u1ec1u so v\u1edbi vi\u1ec7c hi\u1ec3n th\u1ecb giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng b\u00ean trong tr\u00ecnh duy\u1ec7t. Do \u0111\u00f3, v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng DOM \u1ea3o, hi\u1ec7u qu\u1ea3 c\u1ee7a \u1ee9ng d\u1ee5ng s\u1ebd \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n.<\/li>\n
      • Th\u00e2n thi\u1ec7n v\u1edbi SEO: React cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n ph\u00e1t tri\u1ec3n giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111i\u1ec1u h\u01b0\u1edbng trong c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm kh\u00e1c nhau. N\u00f3 c\u0169ng cho ph\u00e9p hi\u1ec3n th\u1ecb ph\u00eda m\u00e1y ch\u1ee7, gi\u00fap t\u0103ng c\u01b0\u1eddng SEO c\u1ee7a m\u1ed9t \u1ee9ng d\u1ee5ng.<\/li>\n
      • C\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng: React s\u1eed d\u1ee5ng ki\u1ebfn \u200b\u200btr\u00fac d\u1ef1a tr\u00ean th\u00e0nh ph\u1ea7n \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng. C\u00e1c th\u00e0nh ph\u1ea7n l\u00e0 c\u00e1c bit m\u00e3 \u0111\u1ed9c l\u1eadp v\u00e0 c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng. C\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia s\u1ebb tr\u00ean c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nhau c\u00f3 ch\u1ee9c n\u0103ng t\u01b0\u01a1ng t\u1ef1. Vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng c\u00e1c th\u00e0nh ph\u1ea7n l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e1t tri\u1ec3n.<\/li>\n
      • H\u1ec7 sinh th\u00e1i th\u01b0 vi\u1ec7n kh\u1ed5ng l\u1ed3 \u0111\u1ec3 b\u1ea1n l\u1ef1a ch\u1ecdn: React cung c\u1ea5p cho b\u1ea1n s\u1ef1 t\u1ef1 do l\u1ef1a ch\u1ecdn c\u00e1c c\u00f4ng c\u1ee5, th\u01b0 vi\u1ec7n v\u00e0 ki\u1ebfn \u200b\u200btr\u00fac \u0111\u1ec3 ph\u00e1t tri\u1ec3n m\u1ed9t \u1ee9ng d\u1ee5ng d\u1ef1a tr\u00ean y\u00eau c\u1ea7u c\u1ee7a b\u1ea1n.<\/li>\n<\/ul>\n

        JSX l\u00e0 g\u00ec?<\/strong><\/h3>\n

        JSX l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a JavaScript XML. N\u00f3 cho ph\u00e9p ch\u00fang ta vi\u1ebft HTML b\u00ean trong JavaScript v\u00e0 \u0111\u1eb7t ch\u00fang trong DOM m\u00e0 kh\u00f4ng c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c h\u00e0m nh\u01b0 appendChild () ho\u1eb7c createElement ().<\/p>\n

        DOM \u1ea3o l\u00e0 g\u00ec?\u00a0<\/strong><\/h3>\n

        DOM \u1ea3o l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m trong \u0111\u00f3 bi\u1ec3u di\u1ec5n \u1ea3o c\u1ee7a DOM th\u1ef1c \u0111\u01b0\u1ee3c l\u01b0u gi\u1eef b\u00ean trong b\u1ed9 nh\u1edb v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a v\u1edbi DOM th\u1ef1c b\u1edfi m\u1ed9t th\u01b0 vi\u1ec7n nh\u01b0 ReactDOM.<\/p>\n

        Props trong React l\u00e0 g\u00ec?<\/strong><\/h3>\n

        Props trong React l\u00e0 \u0111\u1ea7u v\u00e0o cho m\u1ed9t th\u00e0nh ph\u1ea7n c\u1ee7a React. Ch\u00fang c\u00f3 th\u1ec3 c\u00f3 gi\u00e1 tr\u1ecb \u0111\u01a1n ho\u1eb7c c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 m\u1ed9t t\u1eadp gi\u00e1 tr\u1ecb s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a React trong qu\u00e1 tr\u00ecnh t\u1ea1o l\u1eadp b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng quy \u01b0\u1edbc \u0111\u1eb7t t\u00ean g\u1ea7n gi\u1ed1ng v\u1edbi thu\u1ed9c t\u00ednh th\u1ebb HTML.\u00a0<\/p>\n

        Gi\u1ea3i th\u00edch React state v\u00e0 props<\/strong><\/h3>\n

        React state: M\u1ed7i th\u00e0nh ph\u1ea7n trong react \u0111\u1ec1u c\u00f3 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c t\u1ea1o s\u1eb5n, ch\u1ee9a t\u1ea5t c\u1ea3 c\u00e1c gi\u00e1 tr\u1ecb thu\u1ed9c t\u00ednh c\u1ee7a th\u00e0nh ph\u1ea7n \u0111\u00f3. N\u00f3i c\u00e1ch kh\u00e1c, React state ki\u1ec3m so\u00e1t h\u00e0nh vi c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n. B\u1ea5t k\u1ef3 thay \u0111\u1ed5i n\u00e0o trong c\u00e1c React state c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng tr\u1ea1ng th\u00e1i \u0111\u1ec1u d\u1eabn \u0111\u1ebfn vi\u1ec7c hi\u1ec3n th\u1ecb l\u1ea1i th\u00e0nh ph\u1ea7n.<\/p>\n

        React Props: M\u1ecdi th\u00e0nh ph\u1ea7n React ch\u1ea5p nh\u1eadn m\u1ed9t \u0111\u1ed1i s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng duy nh\u1ea5t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 props (vi\u1ebft t\u1eaft c\u1ee7a \u201cthu\u1ed9c t\u00ednh\u201d). C\u00e1c props n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chuy\u1ec3n cho m\u1ed9t th\u00e0nh ph\u1ea7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh HTML v\u00e0 th\u00e0nh ph\u1ea7n ch\u1ea5p nh\u1eadn c\u00e1c props n\u00e0y nh\u01b0 m\u1ed9t \u0111\u1ed1i s\u1ed1. S\u1eed d\u1ee5ng props, b\u1ea1n c\u00f3 th\u1ec3 truy\u1ec1n d\u1eef li\u1ec7u t\u1eeb component n\u00e0y sang component kh\u00e1c.<\/p>\n

        React Hooks l\u00e0 g\u00ec?<\/strong><\/h3>\n

        React Hooks l\u00e0 c\u00e1c h\u00e0m t\u00edch h\u1ee3p cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ea1ng th\u00e1i v\u00e0 v\u00f2ng \u0111\u1eddi trong c\u00e1c th\u00e0nh ph\u1ea7n React. \u0110\u00e2y l\u00e0 nh\u1eefng t\u00ednh n\u0103ng m\u1edbi \u0111\u01b0\u1ee3c b\u1ed5 sung c\u00f3 s\u1eb5n trong phi\u00ean b\u1ea3n React 16.8. M\u1ed7i v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n c\u00f3 3 giai \u0111o\u1ea1n bao g\u1ed3m g\u1eafn k\u1ebft, ng\u1eaft k\u1ebft n\u1ed1i v\u00e0 c\u1eadp nh\u1eadt.\u00a0<\/p>\n

        C\u00f9ng v\u1edbi \u0111\u00f3, c\u00e1c th\u00e0nh ph\u1ea7n c\u00f3 thu\u1ed9c t\u00ednh v\u00e0 tr\u1ea1ng th\u00e1i. Hooks s\u1ebd cho ph\u00e9p c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec3 c\u1ea3i thi\u1ec7n vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng m\u00e3 v\u1edbi t\u00ednh linh ho\u1ea1t cao h\u01a1n trong vi\u1ec7c \u0111i\u1ec1u h\u01b0\u1edbng c\u00e2y th\u00e0nh ph\u1ea7n.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/p>\n

        B\u1ed9 c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS d\u00e0nh cho c\u1ea5p Senior v\u00e0 Manager<\/strong><\/h2>\n

        \u1ede ph\u1ea7n ti\u1ebfp theo, Masterskills s\u1ebd gi\u1edbi thi\u1ec7u \u0111\u1ebfn b\u1ea1n nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS d\u00e0nh cho c\u1ea5p \u0111\u1ed9 cao h\u01a1n:<\/p>\n

        K\u1ec3 t\u00ean m\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng React<\/strong><\/h3>\n

        C\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a \u1ee9ng d\u1ee5ng React, m\u1ed9t trong s\u1ed1 \u0111\u00f3 l\u00e0:<\/p>\n

          \n
        • S\u1eed d\u1ee5ng useMemo (): \u0110\u00e2y l\u00e0 m\u1ed9t m\u00f3c React \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u01b0u v\u00e0o b\u1ed9 \u0111\u1ec7m c\u00e1c ch\u1ee9c n\u0103ng \u0111\u1eaft ti\u1ec1n c\u1ee7a CPU. \u0110\u00f4i khi trong \u1ee9ng d\u1ee5ng React, ch\u1ee9c n\u0103ng \u0110\u1eaft CPU \u0111\u01b0\u1ee3c g\u1ecdi li\u00ean t\u1ee5c do k\u1ebft xu\u1ea5t m\u1ed9t th\u00e0nh ph\u1ea7n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft xu\u1ea5t ch\u1eadm. useMemo () hook c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 cache c\u00e1c h\u00e0m nh\u01b0 v\u1eady. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng useMemo (), h\u00e0m Chi ph\u00ed CPU ch\u1ec9 \u0111\u01b0\u1ee3c g\u1ecdi khi c\u1ea7n thi\u1ebft.<\/li>\n
        • S\u1eed d\u1ee5ng React.PureComponent: \u0110\u00e2y l\u00e0 m\u1ed9t l\u1edbp th\u00e0nh ph\u1ea7n c\u01a1 s\u1edf ki\u1ec3m tra tr\u1ea1ng th\u00e1i v\u00e0 props c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n \u0111\u1ec3 bi\u1ebft li\u1ec7u th\u00e0nh ph\u1ea7n \u0111\u00f3 c\u00f3 n\u00ean \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt hay kh\u00f4ng. Thay v\u00ec s\u1eed d\u1ee5ng React.Component \u0111\u01a1n gi\u1ea3n, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng React.PureComponent \u0111\u1ec3 gi\u1ea3m c\u00e1c k\u1ebft xu\u1ea5t c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00f4ng c\u1ea7n thi\u1ebft.<\/li>\n
        • Lazy Load: \u0110\u00e2y l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 gi\u1ea3m th\u1eddi gian t\u1ea3i c\u1ee7a m\u1ed9t \u1ee9ng d\u1ee5ng React. Lazy Load gi\u00fap gi\u1ea3m nguy c\u01a1 hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng web \u0111\u1ebfn m\u1ee9c t\u1ed1i thi\u1ec3u.<\/li>\n<\/ul>\n

          C\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau c\u1ee7a React component l\u00e0 g\u00ec?<\/strong><\/h3>\n

          C\u00f3 b\u1ed1n giai \u0111o\u1ea1n kh\u00e1c nhau trong v\u00f2ng \u0111\u1eddi c\u1ee7a th\u00e0nh ph\u1ea7n React. Ch\u00fang bao g\u1ed3m:<\/p>\n

            \n
          • Kh\u1edfi t\u1ea1o: Trong giai \u0111o\u1ea1n n\u00e0y, th\u00e0nh ph\u1ea7n React s\u1ebd chu\u1ea9n b\u1ecb b\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp c\u00e1c \u0111\u1ea1o c\u1ee5 m\u1eb7c \u0111\u1ecbnh v\u00e0 tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u cho cu\u1ed9c h\u00e0nh tr\u00ecnh kh\u00f3 kh\u0103n s\u1eafp t\u1edbi.<\/li>\n
          • G\u1eafn k\u1ebft: G\u1eafn k\u1ebft \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c \u0111\u01b0a c\u00e1c ph\u1ea7n t\u1eed v\u00e0o DOM c\u1ee7a tr\u00ecnh duy\u1ec7t. V\u00ec React s\u1eed d\u1ee5ng VirtualDOM, n\u00ean to\u00e0n b\u1ed9 DOM c\u1ee7a tr\u00ecnh duy\u1ec7t hi\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c l\u00e0m m\u1edbi. Giai \u0111o\u1ea1n n\u00e0y bao g\u1ed3m c\u00e1c ph\u01b0\u01a1ng th\u1ee9c v\u00f2ng \u0111\u1eddi componentWillMount v\u00e0 componentDidMount.<\/li>\n
          • \u0110ang c\u1eadp nh\u1eadt: Trong giai \u0111o\u1ea1n n\u00e0y, m\u1ed9t th\u00e0nh ph\u1ea7n s\u1ebd \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt khi c\u00f3 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 tr\u1ea1ng th\u00e1i ho\u1eb7c props c\u1ee7a m\u1ed9t th\u00e0nh ph\u1ea7n. Giai \u0111o\u1ea1n n\u00e0y s\u1ebd c\u00f3 c\u00e1c ph\u01b0\u01a1ng th\u1ee9c v\u00f2ng \u0111\u1eddi nh\u01b0 componentWillUpdate, shouldComponentUpdate, render v\u00e0 componentDidUpdate.<\/li>\n
          • Ng\u1eaft k\u1ebft n\u1ed1i: Trong giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng n\u00e0y c\u1ee7a v\u00f2ng \u0111\u1eddi th\u00e0nh ph\u1ea7n, th\u00e0nh ph\u1ea7n s\u1ebd b\u1ecb x\u00f3a kh\u1ecfi DOM ho\u1eb7c s\u1ebd \u0111\u01b0\u1ee3c ng\u1eaft k\u1ebft n\u1ed1i kh\u1ecfi DOM c\u1ee7a tr\u00ecnh duy\u1ec7t. Giai \u0111o\u1ea1n n\u00e0y s\u1ebd c\u00f3 ph\u01b0\u01a1ng th\u1ee9c v\u00f2ng \u0111\u1eddi \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 componentWillUnmount.<\/li>\n<\/ul>\n

            React Hook c\u00f3 ho\u1ea1t \u0111\u1ed9ng v\u1edbi t\u00ednh n\u0103ng nh\u1eadp t\u0129nh kh\u00f4ng?<\/strong><\/h3>\n

            Nh\u1eadp t\u0129nh \u0111\u1ec1 c\u1eadp \u0111\u1ebfn qu\u00e1 tr\u00ecnh ki\u1ec3m tra m\u00e3 trong th\u1eddi gian bi\u00ean d\u1ecbch \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c bi\u1ebfn s\u1ebd \u0111\u01b0\u1ee3c nh\u1eadp t\u0129nh. React Hooks l\u00e0 c\u00e1c h\u00e0m \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c thu\u1ed9c t\u00ednh ph\u1ea3i \u0111\u01b0\u1ee3c nh\u1eadp t\u0129nh. \u0110\u1ec3 th\u1ef1c thi nh\u1eadp t\u0129nh ch\u1eb7t ch\u1ebd h\u01a1n trong m\u00e3 b\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng API React v\u1edbi c\u00e1c Hook t\u00f9y ch\u1ec9nh.<\/p>\n

            Hi\u1ec7u su\u1ea5t c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng Hooks s\u1ebd kh\u00e1c nh\u01b0 th\u1ebf n\u00e0o so v\u1edbi c\u00e1c l\u1edbp?<\/strong><\/h3>\n

            React Hooks s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u chi ph\u00ed nh\u01b0 t\u1ea1o c\u00e1 th\u1ec3, li\u00ean k\u1ebft c\u00e1c s\u1ef1 ki\u1ec7n, v.v., c\u00f3 trong c\u00e1c l\u1edbp.<\/p>\n

            C\u00e1c hook trong React s\u1ebd t\u1ea1o ra c\u00e1c c\u00e2y th\u00e0nh ph\u1ea7n nh\u1ecf h\u01a1n v\u00ec ch\u00fang s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c vi\u1ec7c l\u1ed3ng nhau t\u1ed3n t\u1ea1i trong HOC (C\u00e1c th\u00e0nh ph\u1ea7n th\u1ee9 t\u1ef1 cao h\u01a1n) v\u00e0 s\u1ebd hi\u1ec3n th\u1ecb c\u00e1c props d\u1eabn \u0111\u1ebfn vi\u1ec7c React ph\u1ea3i th\u1ef1c hi\u1ec7n \u00edt c\u00f4ng vi\u1ec7c h\u01a1n.<\/p>\n

            React Router l\u00e0 g\u00ec?<\/strong><\/h3>\n

            React Router l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng th\u01b0 vi\u1ec7n \u0111\u1ecbnh tuy\u1ebfn ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean React. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o \u0110\u1ecbnh tuy\u1ebfn trong \u1ee9ng d\u1ee5ng React b\u1eb1ng B\u1ed9 \u0111\u1ecbnh tuy\u1ebfn React. N\u00f3 gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh nhi\u1ec1u tuy\u1ebfn \u0111\u01b0\u1eddng trong \u1ee9ng d\u1ee5ng. N\u00f3 cung c\u1ea5p URL \u0111\u1ed3ng b\u1ed9 tr\u00ean tr\u00ecnh duy\u1ec7t v\u1edbi d\u1eef li\u1ec7u s\u1ebd \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean trang web. Ngo\u00e0i ra, React Router c\u00f2n gi\u00fap duy tr\u00ec c\u1ea5u tr\u00fac v\u00e0 h\u00e0nh vi ti\u00eau chu\u1ea9n c\u1ee7a \u1ee9ng d\u1ee5ng v\u00e0 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c \u1ee9ng d\u1ee5ng web trang \u0111\u01a1n.<\/p>\n

            Gi\u1ea3i th\u00edch k\u1ebft xu\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n trong React<\/strong><\/h3>\n

            K\u1ebft xu\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec1 c\u1eadp \u0111\u1ebfn \u0111\u1ea7u ra \u0111\u1ed9ng c\u1ee7a c\u00e1c \u0111\u00e1nh d\u1ea5u giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i \u0111i\u1ec1u ki\u1ec7n. N\u00f3 ho\u1ea1t \u0111\u1ed9ng theo c\u00e1ch t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n JavaScript. S\u1eed d\u1ee5ng k\u1ebft xu\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n, b\u1ea1n c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i c\u00e1c ch\u1ee9c n\u0103ng \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3, k\u1ebft xu\u1ea5t d\u1eef li\u1ec7u API, \u1ea9n ho\u1eb7c hi\u1ec3n th\u1ecb c\u00e1c ph\u1ea7n t\u1eed, quy\u1ebft \u0111\u1ecbnh c\u1ea5p \u0111\u1ed9 quy\u1ec1n, x\u1eed l\u00fd x\u00e1c th\u1ef1c, v.v.<\/p>\n

            C\u00f3 nhi\u1ec1u c\u00e1ch ti\u1ebfp c\u1eadn kh\u00e1c nhau \u0111\u1ec3 tri\u1ec3n khai k\u1ebft xu\u1ea5t c\u00f3 \u0111i\u1ec1u ki\u1ec7n trong React. M\u1ed9t s\u1ed1 trong s\u1ed1 \u0111\u00f3 l\u00e0:<\/p>\n

              \n
            • S\u1eed d\u1ee5ng logic c\u00f3 \u0111i\u1ec1u ki\u1ec7n if-else ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u1ecf h\u01a1n c\u0169ng nh\u01b0 cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee1 v\u1eeba<\/li>\n
            • S\u1eed d\u1ee5ng to\u00e1n t\u1eed b\u1eadc ba, gi\u00fap lo\u1ea1i b\u1ecf m\u1ed9t s\u1ed1 ph\u1ee9c t\u1ea1p t\u1eeb c\u00e1c c\u00e2u l\u1ec7nh if-else<\/li>\n
            • S\u1eed d\u1ee5ng c\u00e1c bi\u1ebfn ph\u1ea7n t\u1eed, \u0111i\u1ec1u n\u00e0y s\u1ebd cho ph\u00e9p b\u1ea1n vi\u1ebft m\u00e3 s\u1ea1ch h\u01a1n.<\/li>\n<\/ul>\n

              React Hook c\u00f3 th\u1ec3 thay th\u1ebf Redux kh\u00f4ng?<\/strong><\/h3>\n

              React Hook kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 s\u1ef1 thay th\u1ebf cho Redux (Redux l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n m\u00e3 ngu\u1ed3n m\u1edf, JavaScript h\u1eefu \u00edch trong vi\u1ec7c qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i \u1ee9ng d\u1ee5ng). Khi n\u00f3i \u0111\u1ebfn vi\u1ec7c qu\u1ea3n l\u00fd c\u00e2y tr\u1ea1ng th\u00e1i \u1ee9ng d\u1ee5ng to\u00e0n c\u1ea7u trong c\u00e1c \u1ee9ng d\u1ee5ng ph\u1ee9c t\u1ea1p l\u1edbn, m\u1eb7c d\u00f9 React s\u1ebd cung c\u1ea5p m\u1ed9t hook useReducer gi\u00fap qu\u1ea3n l\u00fd c\u00e1c chuy\u1ec3n \u0111\u1ed5i tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng t\u1ef1 nh\u01b0 Redux.\u00a0<\/p>\n

              Redux v\u1eabn r\u1ea5t h\u1eefu \u00edch \u1edf c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n c\u1ee7a h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p th\u00e0nh ph\u1ea7n \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c ph\u1ea7n c\u1ee7a tr\u1ea1ng th\u00e1i ph\u1ee5 thu\u1ed9c v\u00e0o nhau, thay v\u00ec khai b\u00e1o nhi\u1ec1u hook useState. Trong c\u00e1c \u1ee9ng d\u1ee5ng web th\u01b0\u01a1ng m\u1ea1i l\u1edbn h\u01a1n, \u0111\u1ed9 ph\u1ee9c t\u1ea1p s\u1ebd cao, v\u00ec v\u1eady ch\u1ec9 s\u1eed d\u1ee5ng React Hook c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ee7.\u00a0<\/p>\n

              Gi\u1ea3i th\u00edch kh\u00e1i ni\u1ec7m Flux<\/strong><\/h3>\n

              Flux l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac \u1ee9ng d\u1ee5ng m\u00e0 Facebook s\u1eed d\u1ee5ng n\u1ed9i b\u1ed9 \u0111\u1ec3 x\u00e2y d\u1ef1ng \u1ee9ng d\u1ee5ng web ph\u00eda m\u00e1y kh\u00e1ch v\u1edbi React. N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n c\u0169ng kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t framework. N\u00f3 l\u00e0 m\u1ed9t lo\u1ea1i ki\u1ebfn tr\u00fac b\u1ed5 sung cho React v\u00e0 tu\u00e2n theo kh\u00e1i ni\u1ec7m v\u1ec1 m\u00f4 h\u00ecnh Lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u01a1n h\u01b0\u1edbng. N\u00f3 r\u1ea5t h\u1eefu \u00edch khi d\u1ef1 \u00e1n c\u00f3 d\u1eef li\u1ec7u \u0111\u1ed9ng v\u00e0 b\u1ea1n c\u1ea7n c\u1eadp nh\u1eadt d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n

              L\u1eddi k\u1ebft<\/strong><\/p>\n

              V\u1eady l\u00e0 b\u1ea1n \u0111\u00e3 c\u00f9ng Masterskills \u0111i\u1ec3m qua nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n ReactJS<\/strong> th\u01b0\u1eddng g\u1eb7p nh\u1ea5t cho m\u1ecdi c\u1ea5p b\u1eadc. Hy v\u1ecdng b\u00e0i t\u1ed5ng h\u1ee3p tr\u00ean s\u1ebd gi\u00fap b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c s\u1ef1 chu\u1ea9n b\u1ecb t\u1ed1t h\u01a1n tr\u01b0\u1edbc ng\u00e0y ph\u1ecfng v\u1ea5n. N\u1ebfu c\u00f3 h\u1ee9ng th\u00fa v\u1edbi c\u00e1c n\u1ed9i dung t\u01b0\u01a1ng t\u1ef1, h\u00e3y c\u00f9ng \u0111\u00f3n ch\u1edd th\u00eam nhi\u1ec1u b\u00e0i vi\u1ebft b\u1ed5 \u00edch kh\u00e1c \u0111\u1ebfn t\u1eeb Masterskills b\u1ea1n nh\u00e9!<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

              React l\u00e0 m\u1ed9t t\u1eeb th\u00f4ng d\u1ee5ng trong gi\u1edbi IT ng\u00e0y 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 v\u1edbi ng\u00e0y c\u00e0ng nhi\u1ec1u c\u00f4ng ty \u0111\u00e3 v\u00e0 \u0111ang s\u1eed d\u1ee5ng.\u00a0 N\u1ebfu b\u1ea1n \u0111ang chu\u1ea9n b\u1ecb cho m\u1ed9t cu\u1ed9c ph\u1ecfng v\u1ea5n xin vi\u1ec7c, \u0111\u00e2y l\u00e0 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[181],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/50499"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=50499"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/50499\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=50499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=50499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=50499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}