{"id":53635,"date":"2019-12-06T00:00:00","date_gmt":"2019-12-05T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/w3c-pridal-webassembly-status-rekomendovannogo-standarta"},"modified":"2020-02-18T14:01:34","modified_gmt":"2020-02-18T11:01:34","slug":"w3c-pridal-webassembly-status-rekomendovannogo-standarta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/w3c-pridal-webassembly-status-rekomendovannogo-standarta","title":{"rendered":"W3C har givet WebAssembly status som en anbefalet standard","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W3C-konsortiet <noindex><a rel=\"nofollow\" href=\"https:\/\/www.w3.org\/blog\/news\/archives\/8123\">har annonceret<\/a><\/noindex> om at tildele WebAssembly-teknologien status som en anbefalet standard. WebAssembly leverer en browseruafh\u00e6ngig generel lav-niveau mellemformatkode til udf\u00f8relse af applikationer kompileret fra forskellige programmeringssprog. WebAssembly positioneres som en mere lovende og portabel teknologi til oprettelse af h\u00f8jtydende webapplikationer. WebAssembly kan bruges til opgaver, der kr\u00e6ver h\u00f8j ydeevne, s\u00e5som videokodning, lydbehandling, grafik- og 3D-manipulation, spiludvikling, kryptografiske operationer, matematiske beregninger og oprettelse af b\u00e6rbare implementeringer af programmeringssprog.<\/p>\n<p>WebAssembly ligner p\u00e5 mange m\u00e5der Asm.js, men adskiller sig ved at v\u00e6re et bin\u00e6rt format, der ikke er bundet til JavaScript. WebAssembly kr\u00e6ver ikke en affaldssamler, da det bruger eksplicit hukommelsesstyring. Ved hj\u00e6lp af JIT til WebAssembly kan man opn\u00e5 en ydeevne t\u00e6t p\u00e5 native kode. Blandt de vigtigste opgaver for WebAssembly er at sikre portabilitet, forudsigelighed i adf\u00e6rd og ensartet udf\u00f8relse af kode p\u00e5 forskellige platforme. P\u00e5 det seneste fremmes WebAssembly ogs\u00e5 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51849\">som en universel platform til sikker udf\u00f8relse af kode i alle infrastrukturer, operativsystemer og enheder, uden at v\u00e6re begr\u00e6nset til browsere.<\/a><\/noindex> W3C har standardiseret tre specifikationer relateret til WebAssembly:<\/p>\n<p>WebAssembly Core<\/p>\n<ul>\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.w3.org\/TR\/2019\/REC-wasm-core-1-20191205\/\">\u2014 beskriver en lav-niveau virtuel maskine til udf\u00f8relse af WebAssembly-mellemformatkode. Ressourcer relateret til WebAssembly leveres i '.wasm'-format, som minder om '.class'-filer i Java og indeholder statiske data og kode-segmenter til at arbejde med disse data.<\/a><\/noindex> \u2014 beskriver en lavniveau virtuel maskine til udf\u00f8relse af WebAssembly mellemledskode. Relaterede WebAssembly ressourcer leveres i formatet \u00ab.wasm\u00bb, som minder om filen \u00ab.class\u00bb i Java og indeholder statiske data og kode-segmenter til at arbejde med disse data.\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.w3.org\/TR\/2019\/REC-wasm-web-api-1-20191205\/\">\u2014 definerer et program-interface baseret p\u00e5 Promise-mekanismen til at anmode om og udf\u00f8re '.wasm'-ressourcer. WebAssembly-ressourcernes format er optimeret til at p\u00e5begynde udf\u00f8relsen uden at vente p\u00e5, at hele filen er indl\u00e6st, hvilket \u00f8ger responsiviteten af webapplikationerne.<\/a><\/noindex> \u2014 definerer et programmeringsinterface baseret p\u00e5 Promise-mekanismen til anmodning og udf\u00f8relse af ressourcer \u00ab.wasm\u00bb. WebAssembly ressourcer er optimeret til at begynde udf\u00f8relsen uden at vente p\u00e5 den fulde indl\u00e6sning af filen, hvilket forbedrer responsiviteten af web-applikationer.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.w3.org\/TR\/2019\/REC-wasm-js-api-1-20191205\/\">WebAssembly JavaScript Interface<\/a><\/noindex> \u2014 tilbyder API til integration med JavaScript. Muligg\u00f8r hentning af v\u00e6rdier og overf\u00f8rsel af parametre til WebAssembly-funktioner. Udf\u00f8relsen af WebAssembly overholder JavaScripts sikkerhedsmodel, og al interaktion med det underliggende system foreg\u00e5r p\u00e5 samme m\u00e5de som udf\u00f8relse af JavaScript-kode.\n<\/ul>\n<p>I fremtiden planl\u00e6gges det at forberede specifikationer for funktioner i WebAssembly s\u00e5som:<\/p>\n<ul>\n<li class=\"l\"> Multitr\u00e5dning med delt hukommelse og atomisk adgang til hukommelsen;\n<li class=\"l\"> Vektoroperationer baseret p\u00e5 SIMD, som muligg\u00f8r paralellisering af loopudf\u00f8relse;\n<li class=\"l\"> Reference typer til direkte henvisninger til objekter fra WebAssembly-kode;\n<li class=\"l\"> Mulighed for at kalde funktioner uden at bruge ekstra plads p\u00e5 stakken;\n<li class=\"l\"> Integration med ECMAScript-moduler \u2014 muligheden for at indl\u00e6se WebAssembly-kode fra JavaScript som moduler, der overholder ECMAScript 6 specifikationen;\n<li class=\"l\"> Driftsmodalitet med affaldssamler;\n<li class=\"l\"> Debuginterfaces;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50406\">WASI<\/a><\/noindex> (WebAssembly System Interface) \u2014 API til direkte interaktion med operativsystemet (POSIX API til arbejde med filer, socketter, osv.).\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51988\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C \u043e\u0431\u044a\u044f\u0432\u0438\u043b \u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 WebAssembly \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430. WebAssembly \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043d\u0435 \u0437\u0430\u0432\u0438\u0441\u044f\u0449\u0438\u0439 \u043e\u0442 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u044b\u0439 \u043d\u0438\u0437\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0439 \u043f\u0440\u043e\u043c\u0435\u0436\u0443\u0442\u043e\u0447\u043d\u044b\u0439 \u043a\u043e\u0434 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0441\u043a\u043e\u043c\u043f\u0438\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. WebAssembly \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u0431\u043e\u043b\u0435\u0435 \u043f\u0435\u0440\u0441\u043f\u0435\u043a\u0442\u0438\u0432\u043d\u0430\u044f \u0438 \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u0430\u044f \u043c\u0435\u0436\u0434\u0443 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430\u043c\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 web-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. WebAssembly \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u0447, \u0442\u0440\u0435\u0431\u0443\u044e\u0449\u0438\u0445 \u0432\u044b\u0441\u043e\u043a\u043e\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u043e\u0441\u0442\u0438, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u0438\u0434\u0435\u043e, \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0437\u0432\u0443\u043a\u0430, [&hellip;]<\/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-53635","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c W3C \u043e\u0431\u044a\u044f\u0432\u0438\u043b \u043e \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u0438 \u0442\u0435\u0445\u043d\u043e\u043b\u043e\u0433\u0438\u0438 WebAssembly \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0430.\" \/>\n\t<meta name=\"robots\" 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