Bol vydan\u00fd Node.js 21.0, platforma pre sp\u00fa\u0161\u0165anie sie\u0165ov\u00fdch aplik\u00e1ci\u00ed v jazyku JavaScript. Podpora vetvy Node.js 21.0 bude zabezpe\u010den\u00e1 po\u010das \u0161iestich mesiacov. V najbli\u017e\u0161\u00edch d\u0148och bude dokon\u010den\u00e1 stabiliz\u00e1cia vetvy Node.js 20, ktor\u00e1 z\u00edska status LTS a bude podporovan\u00e1 do apr\u00edla 2026. Podpora predch\u00e1dzaj\u00facej LTS vetvy Node.js 18.0 potrv\u00e1 do septembra 2025 a vetvy 16.0 do apr\u00edla 2024. <\/p>\n
Hlavn\u00e9 vylep\u0161enia: <\/p>\n
Platforma Node.js m\u00f4\u017ee by\u0165 pou\u017eit\u00e1 na serverov\u00fa podporu webov\u00fdch aplik\u00e1ci\u00ed, ako aj na vytv\u00e1ranie klasick\u00fdch klientsk\u00fdch a serverov\u00fdch sie\u0165ov\u00fdch programov. Pre roz\u0161\u00edrenie funk\u010dnosti aplik\u00e1ci\u00ed pre Node.js bola pripraven\u00e1 ve\u013ek\u00e1 kolekcia modulov, v ktorej n\u00e1jdete moduly s realiz\u00e1ciou. serverov<\/a> a klientov HTTP, SMTP, XMPP, DNS, FTP, IMAP, POP3, moduly na integr\u00e1ciu s r\u00f4znymi webov\u00fdmi r\u00e1mcami, spracovate\u013eov WebSocket a Ajax, konektorov k DBMS (MySQL, PostgreSQL, SQLite, MongoDB), \u0161abl\u00f3nova\u010dov, CSS enginov, implement\u00e1ci\u00ed kryptografick\u00fdch algoritmov a syst\u00e9mov autoriz\u00e1cie (OAuth), XML parserov. <\/p>\n Na zabezpe\u010denie spracovania ve\u013ek\u00e9ho po\u010dtu paraleln\u00fdch dopytov vyu\u017e\u00edva Node.js asynchr\u00f3nny model sp\u00fa\u0161\u0165ania k\u00f3du, zalo\u017een\u00fd na spracovan\u00ed udalost\u00ed v neblokuj\u00facom re\u017eime a ur\u010dovan\u00ed callback spracovate\u013eov. Ako met\u00f3dy multiplexovania pripojen\u00ed podporuj\u00fa tak\u00e9 met\u00f3dy, ako s\u00fa epoll, kqueue, \/dev\/poll a select. Na multiplexovanie pripojen\u00ed sa pou\u017e\u00edva kni\u017enica libuv, ktor\u00e1 je nadstavbou nad libev na syst\u00e9moch Unix a nad IOCP na Windows. Na vytvorenie poolu vl\u00e1kien (thread pool) je zapojen\u00e1 kni\u017enica libeio, na vykon\u00e1vanie DNS dopytov v neblokuj\u00facom re\u017eime je integrovan\u00fd c-ares. V\u0161etky syst\u00e9mov\u00e9 volania, ktor\u00e9 sp\u00f4sobuj\u00fa blokovanie, sa vykon\u00e1vaj\u00fa vn\u00fatri poolu vl\u00e1kien a potom, rovnako ako spracovatelia sign\u00e1lov, pren\u00e1\u0161aj\u00fa v\u00fdsledok svojej pr\u00e1ce sp\u00e4\u0165 cez anonymn\u00fd kan\u00e1l (pipe). Vykon\u00e1vanie JavaScript k\u00f3du je zabezpe\u010den\u00e9 zapojen\u00edm vyvinut\u00e9ho engine V8 spolo\u010dnos\u0165ou Google (\u010falej Microsoft vyv\u00edja variant Node.js s engine Chakra-Core). <\/p>\n Node.js je v podstate podobn\u00fd r\u00e1mcom Perl AnyEvent, Ruby Event Machine, Python Twisted a implement\u00e1cii udalost\u00ed v Tcl, ale cyklus spracovania udalost\u00ed (event loop) v Node.js je skryt\u00fd pred v\u00fdvoj\u00e1rom a pripom\u00edna spracovanie udalost\u00ed v webovej aplik\u00e1cii be\u017eiacej v prehliada\u010di. Pri p\u00edsan\u00ed aplik\u00e1ci\u00ed pre Node.js je potrebn\u00e9 bra\u0165 do \u00favahy \u0161pecifik\u00e1 programovania orientovan\u00e9ho na udalosti. Napr\u00edklad, namiesto vykonania «var result = db.query(«select..»);» s \u010dakan\u00edm na dokon\u010denie a n\u00e1sledn\u00fdm spracovan\u00edm v\u00fdsledkov, Node.js pou\u017e\u00edva princ\u00edp asynchr\u00f3nneho vykon\u00e1vania, t.j. k\u00f3d sa transformuje na «db.query(«select..», function (result) {spracovanie v\u00fdsledku});», pri ktorom riadenie okam\u017eite prejde na \u010fal\u0161\u00ed k\u00f3d, a v\u00fdsledok dopytu bude spracovan\u00fd, ako bud\u00fa d\u00e1ta prich\u00e1dza\u0165. \u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 21.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 Node.js 21.0 \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0432 \u0442\u0435\u0447\u0435\u043d\u0438\u0435 6 \u043c\u0435\u0441\u044f\u0446\u0435\u0432. \u0412 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0438\u0435 \u0434\u043d\u0438 \u0431\u0443\u0434\u0435\u0442 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0432\u0435\u0442\u043a\u0438 Node.js 20, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u0442 \u0441\u0442\u0430\u0442\u0443\u0441 LTS \u0438 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2026 \u0433\u043e\u0434\u0430. \u0421\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 Node.js 18.0 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0441\u0435\u043d\u0442\u044f\u0431\u0440\u044f 2025 \u0433\u043e\u0434\u0430, \u0430 \u043f\u043e\u0437\u0430\u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-111020","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47S dostupn\u00e1 serverov\u00e1 JavaScriptov\u00e1 platforma Node.js 21.0 | ProHoster","description":"Prebieha vydanie Node.js 21.0, platformy pre vykon\u00e1vanie sie\u0165ov\u00fdch aplik\u00e1ci\u00ed v jazyku JavaScript. Podpora pre vetvu Node.js 21.0 bude poskytovan\u00e1 po\u010das 6 mesiacov.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/dostupna-servernaya-javascript-platforma-node-js-21-0","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u0430\u044f JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 Node.js 21.0 | ProHoster","og:description":"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 21.0, \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 JavaScript. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 Node.js 21.0 \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0432 \u0442\u0435\u0447\u0435\u043d\u0438\u0435 6 \u043c\u0435\u0441\u044f\u0446\u0435\u0432.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/dostupna-servernaya-javascript-platforma-node-js-21-0","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2023-10-21T13:10:15+00:00","article:modified_time":"2026-02-15T20:30:51+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"111020","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 16:51:22","updated":"2026-02-15 20:30:51","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/111020","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=111020"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/111020\/revisions"}],"predecessor-version":[{"id":161187,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/111020\/revisions\/161187"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=111020"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=111020"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=111020"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"