Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
C\u00f4ng ngh\u1ec7 th\u00f4ng tin \u0111ang l\u00e0 m\u1ed9t ng\u00e0nh ngh\u1ec1 \u201chot\u201d v\u1edbi m\u1ee9c thu nh\u1eadp cao n\u00ean \u0111\u01b0\u1ee3c nhi\u1ec1u ng\u01b0\u1eddi theo h\u1ecdc. Khi theo h\u1ecdc chuy\u00ean ng\u00e0nh n\u00e0y, b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c trang b\u1ecb nhi\u1ec1u ki\u1ebfn th\u1ee9c trong \u0111\u00f3 c\u00f3 reactJS. V\u1eady, reactJS l\u00e0 g\u00ec? L\u1ee3i \u00edch v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 th\u1ebf n\u00e0o? C\u00f9ng t\u00ecm hi\u1ec3u nh\u1eefng n\u1ed9i dung th\u00f4ng tin chi ti\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n
ReactJS l\u00e0 g\u00ec?<\/p>\n\n\n\n
ReactJS hay react l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n, \u0111\u01b0\u1ee3c vi\u1ebft b\u1eb1ng JavaScript, d\u00f9ng \u0111\u1ec3 x\u00e2y d\u1ef1ng giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng. T\u00ednh \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i, \u0111\u00e3 c\u00f3 kho\u1ea3ng 1300 developer v\u00e0 h\u01a1n 94000 trang web \u0111ang s\u1eed d\u1ee5ng. ReactJS \u0111\u01b0\u1ee3c hi\u1ec3u n\u00f4m na l\u00e0 m\u1ed9t th\u01b0 vi\u1ec7n, c\u00f3 ch\u1ee9a nhi\u1ec1u JavaScript m\u00e3 ngu\u1ed3n v\u00e0 \u201ccha \u0111\u1ebb\u201d \u0111\u00f3 ch\u00ednh l\u00e0 Facebook. M\u1ee5c \u0111\u00edch ch\u00ednh \u0111\u00f3 ch\u00ednh l\u00e0 m\u1ed7i website s\u1eed d\u1ee5ng reactJS th\u00ec ph\u1ea3i ch\u1ea1y th\u1eadt m\u01b0\u1ee3t ho\u1eb7c th\u1eadt nhanh, c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao v\u00e0 \u0111\u01a1n gi\u1ea3n th\u1ef1c hi\u1ec7n.<\/p>\n\n\n\n
V\u1ec1 c\u01a1 b\u1ea3n, c\u00e1c t\u00ednh n\u0103ng c\u1ee7a reactJS th\u01b0\u1eddng xu\u1ea5t ph\u00e1t t\u1eeb vi\u1ec7c t\u1eadp trung c\u00e1c ph\u1ea7n m\u1ec1m ri\u00eang l\u1ebb, cho ph\u00e9p c\u00e1c developer c\u00f3 ch\u1ee9c n\u0103ng ph\u00e1 v\u1ee1 giao di\u1ec7n c\u1ee7a ng\u01b0\u1eddi d\u00f9ng t\u1eeb m\u1ed9t c\u00e1ch ph\u1ee9c t\u1ea1p v\u00e0 bi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh c\u00e1c ph\u1ea7n m\u1ec1m \u0111\u01a1n gi\u1ea3n. Hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec c\u00e1c render d\u1eef li\u1ec7u kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u1edf v\u1ecb tr\u00ed server m\u00e0 c\u00f2n \u1edf v\u1ecb tr\u00ed client khi s\u1eed d\u1ee5ng reactJS.<\/p>\n\n\n\n
Hi\u1ec7n nay, reactJS th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thi\u1ebft k\u1ebf<\/a> b\u1ed1 c\u1ee5c cho trang web, nh\u01b0ng h\u1ea1n ch\u1ebf \u0111\u00f3 ch\u00ednh l\u00e0 c\u1ea5u tr\u00fac kh\u00f3. Thay v\u00e0o \u0111\u00f3 s\u1eed d\u1ee5ng JSX v\u00e0 nh\u00fang v\u00e0o c\u00e1c \u0111o\u1ea1n HTML v\u00e0 javascript, b\u1ea1n s\u1ebd th\u1ea5y c\u00fa ph\u00e1p d\u1ec5 hi\u1ec3u h\u01a1n v\u00e0 JSX c\u0169ng c\u00f3 th\u1ec3 t\u1ed1i \u01b0u c\u00e1c code khi bi\u00ean so\u1ea1n, v\u1eeba gi\u00fap \u00edch cho ng\u01b0\u1eddi l\u1eadp tr\u00ecnh<\/a> ti\u1ec7n cho vi\u1ec7c bi\u00ean d\u1ecbch.<\/p>\n\n\n\n React native l\u00e0 m\u1ed9t framework \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi c\u00f4ng ty c\u00f4ng ngh\u1ec7 n\u1ed5i ti\u1ebfng facebook v\u1edbi m\u1ee5c \u0111\u00edch gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n hi\u1ec7u n\u0103ng c\u1ee7a Hybrid v\u00e0 b\u00e0i to\u00e1n chi ph\u00ed khi ph\u1ea3i vi\u1ebft nhi\u1ec1u lo\u1ea1i ng\u00f4n ng\u1eef native cho t\u1eebng n\u1ec1n t\u1ea3ng di \u0111\u1ed9ng.<\/p>\n\n\n\n N\u00f3i c\u00e1ch kh\u00e1c, react native cho ph\u00e9p c\u00e1c developer x\u00e2y d\u1ef1ng c\u00e1c \u1ee9ng d\u1ee5ng di \u0111\u1ed9ng tr\u00ean iOS v\u00e0 Android ch\u1ec9 v\u1edbi m\u1ed9t ng\u00f4n l\u1eadp tr\u00ecnh<\/a> duy nh\u1ea5t \u0111\u00f3 l\u00e0 JavaScript. V\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a react native \u0111\u00e3 gi\u1ea3i quy\u1ebft t\u1ed1t b\u00e0i to\u00e1n li\u00ean quan t\u1edbi hi\u1ec7u n\u0103ng hybrid v\u00e0 s\u1ef1 ph\u1ee9c t\u1ea1p khi ph\u1ea3i vi\u1ebft nhi\u1ec1u lo\u1ea1i ng\u00f4n ng\u1eef native cho t\u1eebng n\u1ec1n t\u1ea3ng tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng.<\/p>\n\n\n\n Reactjs c\u01a1 b\u1ea3n c\u00f3 c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0o?<\/p>\n\n\n\n Th\u00e0nh ph\u1ea7n c\u01a1 b\u1ea3n c\u1ee7a react \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 components. Syntax \u0111\u1ec3 vi\u1ebft HTML s\u1eed d\u1ee5ng javascript \u0111\u1ec3 render. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o m\u1ed9t component b\u1eb1ng c\u00e1ch g\u1ecdi c\u00e1c ph\u01b0\u01a1ng th\u1ee9c createClass c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng react \u2013 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u khi ti\u1ebfp c\u1eadn v\u1edbi th\u01b0 vi\u1ec7n n\u00e0y. \u0110\u1ed3ng th\u1eddi c\u00f3 th\u1ec3 l\u1ed3ng nhi\u1ec1u component v\u00e0o nhau th\u00f4ng qua c\u00e1c l\u1ec7nh return c\u1ee7a render.<\/p>\n\n\n\n Trong m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh, c\u00f3 r\u1ea5t nhi\u1ec1u c\u00e1c component, \u0111\u1ec3 vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c component d\u1ec5 d\u00e0ng, ng\u01b0\u1eddi ta th\u01b0\u1eddng s\u1eed d\u1ee5ng redux. Redux gi\u1ed1ng nh\u01b0 1 c\u00e1i kho ch\u1ee9a c\u00e1c component v\u00e0 khi d\u00f9ng b\u1ea1n ch\u1ec9 c\u1ea7n g\u1ecdi n\u00f3 ra.<\/p>\n\n\n\n Virtual DOM kh\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi c\u00e1c reactJS nh\u01b0ng l\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u. C\u00f3 th\u1ec3 n\u00f3i, \u0111\u00e2y l\u00e0 m\u1ed9t chu\u1ea9n c\u1ee7a W3C \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 truy xu\u1ea5t code HTML ho\u1eb7c XML. C\u00e1c virtual DOM s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o ra khi th\u1ef1c hi\u1ec7n vi\u1ec7c ch\u1ea1y ch\u01b0\u01a1ng tr\u00ecnh. Vi\u1ec7c s\u1eed d\u1ee5ng DOM s\u1ebd gi\u00fap ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c, khi c\u00f3 s\u1ef1 thay \u0111\u1ed5i v\u1ec1 reactJS th\u00ec c\u1ea7n ph\u1ea3i c\u00f3 s\u1ef1 t\u00ednh to\u00e1n v\u00e0 vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh ch\u1ec9 c\u1ea7n th\u1ef1c hi\u1ec7n tr\u00ean DOM.<\/p>\n\n\n\n C\u00e1c t\u00ednh n\u0103ng c\u1ee7a react JS l\u00e0 g\u00ec?<\/p>\n\n\n\n Khi s\u1eed d\u1ee5ng react JS ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 khai th\u00e1c \u0111\u01b0\u1ee3c nhi\u1ec1u t\u00ednh n\u0103ng kh\u00e1c nhau, trong \u0111\u00f3 ph\u1ea3i k\u1ec3 \u0111\u1ebfn:<\/p>\n\n\n\n Vi\u1ebft \u1ee9ng d\u1ee5ng tr\u1ef1c ti\u1ebfp tr\u00ean JavaScript<\/p>\n\n\n\n Ph\u00e1 v\u1ee1 nh\u1eefng c\u1ea5u tr\u00fac UI ph\u1ee9c t\u1ea1p, bi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh c\u00e1c component \u0111\u1ed9c l\u1eadp.<\/p>\n\n\n\n Chuy\u1ec3n c\u00e1c d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00f9y bi\u1ebfn \u0111\u1ebfn m\u1ed9t UI component c\u1ee5 th\u1ec3<\/p>\n\n\n\n Thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i cho nhi\u1ec1u component (child) tr\u00ean \u1ee9ng d\u1ee5ng nh\u01b0ng kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng t\u1edbi c\u00e1c component g\u1ed1c (parent) \u0111ang \u1edf tr\u1ea1ng th\u00e1i Stateful.<\/p>\n\n\n\n Bi\u1ebft \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c khi n\u00e0o c\u1ea7n render l\u1ea1i ho\u1eb7c khi n\u00e0o c\u1ea7n b\u1ecf \u0111i c\u00e1c DOM ch\u00ednh.<\/p>\n\n\n\n V\u1edbi s\u1ef1 ph\u00e1t tri\u1ec3n m\u1ea1nh m\u1ebd c\u1ee7a c\u00f4ng ngh\u1ec7, th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed nhi\u1ec1u doanh nghi\u1ec7p c\u1ea7n ph\u1ea3i c\u00f3 \u201cb\u00ed k\u00edp\u201d \u0111\u1ec3 v\u01b0\u1ee3t m\u1eb7t \u0111\u1ed1i th\u1ee7. V\u00e0 \u201cb\u00ed k\u00edp\u201d l\u00fac n\u00e0y \u0111\u00f3 ch\u00ednh l\u00e0 s\u1eed d\u1ee5ng react JS b\u1edfi c\u00e1c l\u00fd do sau \u0111\u00e2y:<\/p>\n\n\n\n D\u1ec5 d\u00e0ng s\u1eed d\u1ee5ng, giao di\u1ec7n th\u00e2n thi\u1ec7n<\/p>\n\n\n\n Khi s\u1eed d\u1ee5ng reactJS ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c web h\u1ea5p d\u1eabn, nhanh ch\u00f3ng, hi\u1ec7u qu\u1ea3 v\u1edbi m\u00e3 h\u00f3a t\u1ed1i thi\u1ec3u. Nh\u1edd \u0111\u00f3, ng\u01b0\u1eddi d\u00f9ng s\u1ebd d\u1ec5 d\u00e0ng c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c t\u1ed1c \u0111\u1ed9 t\u1ed1i \u01b0u c\u1ee7a react JS \u1edf c\u00e1c component (th\u00e0nh ph\u1ea7n) ri\u00eang l\u1ebb. Thay v\u00ec ph\u1ea3i l\u00e0m vi\u1ec7c tr\u00ean to\u00e0n b\u1ed9 \u1ee9ng d\u1ee5ng website, c\u00e1c l\u1eadp tr\u00ecnh<\/a> vi\u00ean c\u00f3 th\u1ec3 chia nh\u1ecf c\u00e1c c\u1ea5u tr\u00fac UI th\u00e0nh nhi\u1ec1u component \u0111\u01a1n gi\u1ea3n.<\/p>\n\n\n\n H\u1ed7 tr\u1ee3 reusable component trong Java<\/p>\n\n\n\n Kh\u00f4ng ph\u1ea3i l\u1eadp tr\u00ecnh<\/a> vi\u00ean n\u00e0o c\u0169ng thi\u1ebft k\u1ebf<\/a> \u0111\u01b0\u1ee3c c\u00e1c component hi\u1ec7u qu\u1ea3, vi\u1ec7c t\u00e1i s\u1eed d\u1ee5ng component s\u1ebd gi\u00fap cho c\u00e1c developer c\u00f3 c\u01a1 h\u1ed9i s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i c\u00e1c t\u00ednh n\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u s\u1eb5n. Nh\u1edd c\u00f3 react JS, developer ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ea1i c\u00e1c components \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n th\u00e0nh c\u00e1c \u1ee9ng d\u1ee5ng kh\u00e1c nh\u01b0ng c\u00f3 c\u00f9ng ch\u1ee9c n\u0103ng.<\/p>\n\n\n\n Vi\u1ebft component d\u1ec5 d\u00e0ng h\u01a1n<\/p>\n\n\n\n Khi vi\u1ebft react component b\u1ea1n s\u1ebd ph\u1ea3i s\u1eed d\u1ee5ng t\u1edbi JSX \u2013 l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa JavaScript v\u00e0 HTML. M\u1eb7c d\u00f9 kh\u00f4ng ph\u1ea3i l\u00e0 ph\u1ea7n m\u1edf r\u1ed9ng c\u00fa ph\u00e1p ph\u1ed5 bi\u1ebfn nh\u1ea5t nh\u01b0ng JSX v\u1eabn \u0111\u01b0\u1ee3c ng\u01b0\u1eddi d\u00f9ng \u0111\u00e1nh gi\u00e1 cao khi ph\u00e1t tri\u1ec3n component \u0111\u1eb7c bi\u1ec7t ho\u1eb7c c\u00e1c \u1ee9ng d\u1ee5ng kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn.<\/p>\n\n\n\n Khi s\u1eed d\u1ee5ng JSX vi\u1ec7c x\u00e2y d\u1ef1ng web app v\u1edbi reactJS tr\u1edf n\u00ean d\u1ec5 d\u00e0ng h\u01a1n, ng\u01b0\u1eddi d\u00f9ng ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng c\u00fa ph\u00e1p.<\/p>\n\n\n\n Hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c t\u1ed1t h\u01a1n so v\u1edbi virtual DOM<\/p>\n\n\n\n \u0110a s\u1ed1 c\u00e1c \u1ee9ng d\u1ee5ng tr\u00ean website \u0111\u1ec1u g\u1eb7p r\u1eafc r\u1ed1i trong qu\u00e1 tr\u00ecnh DOM. V\u1edbi l\u1ee3i th\u1ebf s\u1eed d\u1ee5ng c\u00e1c virtual DOM, react JS gi\u00fap ng\u01b0\u1eddi d\u00f9ng tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1c v\u1ea5n \u0111\u1ec1 n\u00e0y. Ngo\u00e0i ra, reactJS c\u0169ng cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng x\u00e2y d\u1ef1ng c\u00e1c virtual DOM v\u00e0 host ch\u00fang trong b\u1ed9 nh\u1edb. \u01afu \u0111i\u1ec3m n\u00e0y s\u1ebd gi\u00fap virtua thay \u0111\u1ed5i ngay c\u1ea3 khi DOM th\u1ef1c th\u1ebf thay \u0111\u1ed5i; c\u1eadp nh\u1eadt li\u00ean t\u1ee5c c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ec3 h\u1ea1n ch\u1ebf t\u00ecnh tr\u1ea1ng gi\u00e1n \u0111o\u1ea1n. Ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng li\u00ean t\u1ee5c, website \u1ed5n \u0111\u1ecbnh gi\u00fap doanh thu t\u0103ng tr\u01b0\u1edfng m\u1ee9c cao.<\/p>\n\n\n\n Th\u00e2n thi\u1ec7n v\u1edbi SEO<\/p>\n\n\n\n \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u \u0111\u1eb7c bi\u1ec7t ch\u1ec9 c\u00f3 \u1edf reactJS v\u00e0 c\u0169ng ch\u00ednh l\u00e0 v\u1ea5n \u0111\u1ec1 l\u1edbn nh\u1ea5t c\u1ee7a c\u00e1c JS Frameworks v\u00ec h\u1ea7u h\u1ebft c\u00e1c JS Frameworks kh\u00f4ng th\u00e2n thi\u1ec7n v\u1edbi \u1ed5 m\u00e1y t\u00ecm ki\u1ebfm m\u1eb7c d\u00f9 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi reactJS kh\u00f4ng n\u1eb1m trong nh\u00f3m kh\u00f4ng th\u00e2n thi\u1ec7n v\u1edbi SEO v\u00ec d\u01b0\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a c\u00e1c render v\u00e0 tr\u1ea3 v\u1ec1 tr\u00ecnh duy\u1ec7t d\u01b0\u1edbi d\u1ea1ng webpage khi m\u00e0 b\u1ea1n ch\u1ea1y reactJS tr\u00ean server v\u00e0 c\u00e1c virtual DOM. Ch\u00ednh v\u00ec l\u00fd do n\u00e0y m\u00e0 react d\u1ec5 d\u00e0ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c \u0111\u1ea7y \u0111\u1ee7 \u0111\u01b0\u1ee3c c\u00e1c t\u00ednh SEO Friendly.<\/p>\n\n\n\n