{"id":103835,"date":"2022-04-21T15:36:45","date_gmt":"2022-04-21T13:36:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupna-servernaya-javascript-platforma-node-js-18-0"},"modified":"2022-04-21T15:36:45","modified_gmt":"2022-04-21T13:36:45","slug":"dostupna-servernaya-javascript-platforma-node-js-18-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/dostupna-servernaya-javascript-platforma-node-js-18-0","title":{"rendered":"Den serverbaserade JavaScript-plattformen Node.js 18.0 \u00e4r nu tillg\u00e4nglig","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 18.0, \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.   Node.js 18.0 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u0435\u0442\u043a\u0430\u043c \u0441 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043d\u043e \u0434\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0430\u0442\u0443\u0441 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043e\u043a\u0442\u044f\u0431\u0440\u0435, \u043f\u043e\u0441\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 Node.js 18.x \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2025 \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 16.x \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2024 \u0433\u043e\u0434\u0430, \u0430 \u043f\u043e\u0437\u0430\u043f\u0440\u043e\u0448\u043b\u043e\u0439 LTS-\u0432\u0435\u0442\u043a\u0438 14.x \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2023 \u0433\u043e\u0434\u0430. \u0421\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435 LTS-\u0432\u0435\u0442\u043a\u0438 12.x \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u043e 30 \u0430\u043f\u0440\u0435\u043b\u044f, \u0430 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 Node.js 17.x &#8212; 1 \u0438\u044e\u043d\u044f.     <\/p>\n<p>Huvudsakliga f\u00f6rb\u00e4ttringar:  <\/p>\n<ul>\n<li class=\"l\"> V8-motorn har uppdaterats till version 10.1, som anv\u00e4nds i Chromium 101. J\u00e4mf\u00f6rt med Node.js 17.9.0-versionen har st\u00f6d f\u00f6r funktioner som metoderna findLast och findLastIndex lagts till, vilket m\u00f6jligg\u00f6r s\u00f6kning av element fr\u00e5n slutet av en array, samt funktionen Intl.supportedValuesOf. API:t Intl.Locale har f\u00f6rb\u00e4ttrats. Initieringen av klassf\u00e4lt och privata metoder har p\u00e5skyndats.\n<li class=\"l\"> \u0412\u043a\u043b\u044e\u0447\u0451\u043d \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u044b\u0439 API fetch(), \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u043f\u043e \u0441\u0435\u0442\u0438. \u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u043a\u043e\u0434\u0435 \u0438\u0437 HTTP\/1.1 \u043a\u043b\u0438\u0435\u043d\u0442\u0430 undici \u0438 \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u043f\u0440\u0438\u0431\u043b\u0438\u0436\u0435\u043d\u0430 \u043a \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u043c\u0443 API, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u043c\u0443 \u0432 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u0445. \u0412 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u0432 FormData, Headers, Request \u0438 Response \u0434\u043b\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430\u043c\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0438 \u043e\u0442\u0432\u0435\u0442\u043e\u0432.         const res = await fetch(&#8216;https:\/\/nodejs.org\/api\/documentation.json&#8217;);     if (res.ok) {       const data = await res.json();       console.log(data);     }\n<li class=\"l\"> En experimentell implementering av API:t Web Streams har lagts till, vilket ger tillg\u00e5ng till datastreams som tas emot \u00f6ver n\u00e4tet. API:t m\u00f6jligg\u00f6r att l\u00e4gga till egna hanterare f\u00f6r att arbeta med data n\u00e4r informationen anl\u00e4nder \u00f6ver n\u00e4tet, utan att beh\u00f6va v\u00e4nta p\u00e5 att hela filen ska laddas. I Node.js finns nu s\u00e5dana objekt som ReadableStream*, TransformStream*, WritableStream*, TextEncoderStream, TextDecoderStream, CompressionStream och DecompressionStream.\n<li class=\"l\"> API:t Blob, som g\u00f6r det m\u00f6jligt att inkapsla of\u00f6r\u00e4nderliga r\u00e5data f\u00f6r s\u00e4ker anv\u00e4ndning i olika arbetstr\u00e5dar, har nu stabiliserats.\n<li class=\"l\"> \u0412 \u0447\u0438\u0441\u043b\u043e \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0451\u043d API       BroadcastChannel, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0431\u043c\u0435\u043d \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u043c \u0440\u0435\u0436\u0438\u043c\u0435 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 &#171;\u043e\u0434\u0438\u043d \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442\u0435\u043b\u044c &#8212; \u043c\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u0435\u043b\u0435\u0439&#187;.\n<li class=\"l\"> Den experimentella modulen node:test har lagts till f\u00f6r att skapa och k\u00f6ra tester i JavaScript, som returnerar resultat i TAP-format (Test Anything Protocol).\n<li class=\"l\"> F\u00e4rdiga byggnader f\u00f6r Red Hat Enterprise Linux (RHEL) 8 och andra distributioner baserade p\u00e5 Glibc 2.28+ har skapats, inklusive Debian 10 och Ubuntu 20.04, samt f\u00f6r macOS 10.15+. P\u00e5 grund av problem med byggandet av V8-motorn har skapandet av 32-bitarsbyggnader f\u00f6r Windows tillf\u00e4lligt stoppats.\n<li class=\"l\"> \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0441\u0431\u043e\u0440\u043a\u0438 \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430 Node.js \u0441 \u0432\u044b\u0431\u0440\u0430\u043d\u043d\u044b\u043c\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430\u043c\u0438, \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u043c\u044b\u043c\u0438 \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435. \u0414\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0440\u0442\u043e\u0432\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u0432 \u0441\u0431\u043e\u0440\u043e\u0447\u043d\u044b\u0439 \u0441\u043a\u0440\u0438\u043f\u0442 configure \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043e\u043f\u0446\u0438\u044f &#171;&#8212;node-snapshot-main&#187;, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, &#171;.\/configure &#8212;node-snapshot-main=marked.js; name node&#187;          <\/ul>\n<p>Node.js-plattformen kan anv\u00e4ndas b\u00e5de f\u00f6r serverhantering av webapplikationer och f\u00f6r att skapa vanliga klient- och servern\u00e4tverksprogram. F\u00f6r att ut\u00f6ka funktionaliteten f\u00f6r Node.js-applikationer har en stor samling moduler tagits fram, d\u00e4r man kan finna moduler med implementeringar.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/\"   title=\"servrar\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1641\">servrar<\/a> och kunder f\u00f6r HTTP, SMTP, XMPP, DNS, FTP, IMAP, POP3, moduler f\u00f6r integration med olika webbramverk, WebSocket- och Ajax-hanterare, anslutare till databaser (MySQL, PostgreSQL, SQLite, MongoDB), mallmotorer, CSS-motorer, implementationer av kryptalgoritmer och auktorisationssystem (OAuth), XML-parserare.    <\/p>\n<p> F\u00f6r att hantera ett stort antal parallella f\u00f6rfr\u00e5gningar anv\u00e4nder Node.js ett asynkront kodk\u00f6rningssystem baserat p\u00e5 h\u00e4ndelsehantering i icke-blockerande l\u00e4ge och definierar callback-hanterare. Metoder som epoll, kqueue, \/dev\/poll och select st\u00f6ds f\u00f6r multiplexeringsanslutningar. F\u00f6r multiplexeringsanslutningar anv\u00e4nds biblioteket libuv, som \u00e4r ett lager \u00f6ver libev i Unix-system och \u00f6ver IOCP i Windows. F\u00f6r att skapa en tr\u00e5dpool anv\u00e4nds biblioteket libeio, och f\u00f6r att utf\u00f6ra DNS-f\u00f6rfr\u00e5gningar i icke-blockerande l\u00e4ge integreras c-ares. Alla systemanrop som orsakar blockering utf\u00f6rs inom tr\u00e5dpoolen och skickar sedan, liksom signalhanterare, tillbaka resultatet av sitt arbete genom en anonym kanal (pipe). Utf\u00f6randet av JavaScript-kod s\u00e4kerst\u00e4lls genom att anv\u00e4nda den av Google utvecklade V8-motorn (dessutom utvecklar Microsoft en variant av Node.js med Chakra-Core-motorn).        <\/p>\n<p>I grunden liknar Node.js Perl AnyEvent, Ruby Event Machine, Python Twisted och h\u00e4ndelsehantering i Tcl, men h\u00e4ndelseloopen i Node.js \u00e4r dold f\u00f6r utvecklaren och liknar h\u00e4ndelsehanteringen i en webapplikation som k\u00f6rs i webbl\u00e4saren. N\u00e4r man skriver applikationer f\u00f6r Node.js m\u00e5ste man ta h\u00e4nsyn till aspekterna av h\u00e4ndelsestyrd programmering; till exempel, ist\u00e4llet f\u00f6r att utf\u00f6ra &#171;var result = db.query(&#171;select..&#187;);&#187; och v\u00e4nta p\u00e5 att det ska slutf\u00f6ras och sedan bearbeta resultaten, anv\u00e4nds i Node.js principen f\u00f6r asynkron exekvering, det vill s\u00e4ga att koden transformeras till &#171;db.query(&#171;select..&#187;, function (result) {bearbeta resultatet});&#187;, d\u00e4r kontrollen omedelbart \u00f6verg\u00e5r till efterf\u00f6ljande kod och resultatet av fr\u00e5gan bearbetas efterhand som datan ankommer.      <\/p>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57054\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Node.js 18.0, \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. Node.js 18.0 \u043e\u0442\u043d\u0435\u0441\u0451\u043d \u043a \u0432\u0435\u0442\u043a\u0430\u043c \u0441 \u0434\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438, \u043d\u043e \u0434\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0430\u0442\u0443\u0441 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043e\u043a\u0442\u044f\u0431\u0440\u0435, \u043f\u043e\u0441\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0441\u0442\u0430\u0431\u0438\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 Node.js 18.x \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2025 \u0433\u043e\u0434\u0430. 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