{"id":6643,"date":"2026-04-13T11:50:53","date_gmt":"2026-04-13T11:50:53","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/react\/"},"modified":"2026-04-13T11:50:53","modified_gmt":"2026-04-13T11:50:53","slug":"reagovat","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/cs\/dictionary\/react\/","title":{"rendered":"React"},"content":{"rendered":"

React: Komplexn\u00ed definice<\/h1>\n

React<\/a> je popul\u00e1rn\u00ed open-source JavaScript<\/a> knihovna pou\u017e\u00edvan\u00e1 k vytv\u00e1\u0159en\u00ed u\u017eivatelsk\u00fdch rozhran\u00ed. Byla vyvinuta spole\u010dnost\u00ed Facebook a nyn\u00ed ji spravuje komunita v\u00fdvoj\u00e1\u0159\u016f. React je zn\u00e1m\u00e1 svou schopnost\u00ed vytv\u00e1\u0159et dynamick\u00e1 a responzivn\u00ed u\u017eivatelsk\u00e1 rozhran\u00ed s minim\u00e1ln\u00edm k\u00f3dov\u00e1n\u00edm. Je \u0161iroce pou\u017e\u00edv\u00e1n pro budov\u00e1n\u00ed web<\/a> aplikace, mobiln\u00ed aplikace a dokonce i desktopov\u00e9 aplikace.<\/p>\n

React je zalo\u017een na konceptu komponent. Komponenta je samostatn\u00fd blok. k\u00f3d<\/a> kter\u00e9 lze opakovan\u011b pou\u017e\u00edt v cel\u00e9 aplikaci. Lze si ji p\u0159edstavit jako stavebn\u00ed prvek, kter\u00fd lze kombinovat s dal\u0161\u00edmi komponentami a vytvo\u0159it tak kompletn\u00ed u\u017eivatelsk\u00e9 rozhran\u00ed. Sou\u010d\u00e1sti React<\/a> jsou vytvo\u0159eny pomoc\u00ed kombinace syntaxe podobn\u00e9 HTML zvan\u00e9 JSX a JavaScript.<\/p>\n

Jednou z kl\u00ed\u010dov\u00fdch funkc\u00ed React je virtu\u00e1ln\u00ed DOM (Document Object Model). Virtu\u00e1ln\u00ed DOM je odleh\u010denou reprezentac\u00ed skute\u010dn\u00e9ho DOM. P\u0159i zm\u011bn\u011b komponenty aktualizuje React virtu\u00e1ln\u00ed DOM m\u00edsto skute\u010dn\u00e9ho DOM. D\u00edky tomu m\u016f\u017ee React efektivn\u011b ur\u010dit, jak\u00e9 zm\u011bny je t\u0159eba v u\u017eivatelsk\u00e9m rozhran\u00ed prov\u00e9st, a aktualizovat pouze tyto \u010d\u00e1sti u\u017eivatelsk\u00e9ho rozhran\u00ed. V\u00fdsledkem je rychlej\u0161\u00ed vykreslov\u00e1n\u00ed a plynulej\u0161\u00ed u\u017eivatelsk\u00e9 prost\u0159ed\u00ed.<\/p>\n

React je tak\u00e9 zn\u00e1m\u00fd pro svou jednosm\u011brnou data<\/a> proud\u011bn\u00ed. V syst\u00e9mu React proud\u00ed data jedn\u00edm sm\u011brem, z nad\u0159azen\u00fdch komponent do pod\u0159\u00edzen\u00fdch komponent. To usnad\u0148uje spr\u00e1vu dat a zaji\u0161\u0165uje, \u017ee u\u017eivatelsk\u00e9 rozhran\u00ed je v\u017edy aktu\u00e1ln\u00ed.<\/p>\n

React je vysoce p\u0159izp\u016fsobiteln\u00fd a lze jej pou\u017e\u00edvat s dal\u0161\u00edmi knihovnami a frameworky. Lze jej pou\u017e\u00edt s popul\u00e1rn\u00edmi front-endov\u00fdmi frameworky, jako jsou nap\u0159. Angular<\/a> a Vue<\/a>.js. Lze jej tak\u00e9 pou\u017e\u00edt s back-endov\u00fdmi frameworky, jako je nap\u0159. Node.js<\/a>.<\/p>\n

React m\u00e1 velkou a aktivn\u00ed komunitu v\u00fdvoj\u00e1\u0159\u016f, kte\u0159\u00ed p\u0159isp\u00edvaj\u00ed k jeho v\u00fdvoji a poskytuj\u00ed podporu ostatn\u00edm v\u00fdvoj\u00e1\u0159\u016fm. K dispozici je \u0159ada zdroj\u016f pro studium React, v\u010detn\u011b dokumentace, v\u00fdukov\u00fdch program\u016f a online kurz\u016f.<\/p>\n

Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee React je v\u00fdkonn\u00e1 a flexibiln\u00ed knihovna JavaScript, kter\u00e1 slou\u017e\u00ed k vytv\u00e1\u0159en\u00ed dynamick\u00fdch a citliv\u00fdch u\u017eivatelsk\u00fdch rozhran\u00ed. Jej\u00ed architektura zalo\u017een\u00e1 na komponent\u00e1ch, virtu\u00e1ln\u00ed DOM a jednosm\u011brn\u00fd tok dat z n\u00ed \u010din\u00ed ide\u00e1ln\u00ed volbu pro vytv\u00e1\u0159en\u00ed komplexn\u00edch aplikac\u00ed. Jej\u00ed popularita a aktivn\u00ed komunita z n\u00ed \u010din\u00ed cenn\u00fd n\u00e1stroj pro ka\u017ed\u00e9ho v\u00fdvoj\u00e1\u0159e, kter\u00fd chce vytv\u00e1\u0159et modern\u00ed webov\u00e9 aplikace.<\/p>","protected":false},"excerpt":{"rendered":"

Seznamte se s React, popul\u00e1rn\u00ed open-source knihovnou JavaScript, kter\u00e1 se pou\u017e\u00edv\u00e1 k vytv\u00e1\u0159en\u00ed dynamick\u00fdch a citliv\u00fdch u\u017eivatelsk\u00fdch rozhran\u00ed s minim\u00e1ln\u00edm k\u00f3dov\u00e1n\u00edm.<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6643","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"\nReact - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about React, the popular open-source JavaScript library used for building dynamic and responsive user interfaces with minimal coding.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/cs\/slovnik\/reagovat\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"React\" \/>\n<meta property=\"og:description\" content=\"Learn about React, the popular open-source JavaScript library used for building dynamic and responsive user interfaces with minimal coding.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thecodest.co\/cs\/slovnik\/reagovat\/\" \/>\n<meta property=\"og:site_name\" content=\"The Codest\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thecodest.co\/app\/uploads\/2024\/06\/cover-image.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/react\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/react\\\/\",\"name\":\"React - 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