{"id":101400,"date":"2021-09-25T10:22:59","date_gmt":"2021-09-25T08:22:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov"},"modified":"2021-09-25T10:22:59","modified_gmt":"2021-09-25T08:22:59","slug":"proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","title":{"rendered":"Projektet elk utvecklar en kompakt JavaScript-motor f\u00f6r mikrokontroller.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

En ny version av JavaScript-motorn elk 2.0.9 \u00e4r tillg\u00e4nglig, riktad mot anv\u00e4ndning i system med begr\u00e4nsade resurser, s\u00e5som mikrokontroller, inklusive ESP32- och Arduino Nano-kort med 2 KB RAM och 30 KB Flash. F\u00f6r att k\u00f6ra den tillhandah\u00e5llna virtuella maskinen kr\u00e4vs endast 100 byte minne och 20 KB lagringsutrymme. Projektkoden \u00e4r skriven i C och distribueras under GPLv2-licensen. F\u00f6r att bygga projektet kr\u00e4vs bara en C-kompilator \u2014 inga ytterligare beroenden beh\u00f6vs. Projektet utvecklas av utvecklarna av operativsystemet f\u00f6r IoT-enheter Mongoose OS, JavaScript-motorn mJS och inbyggda. webbserver.<\/a> Mongoose (anv\u00e4nds i produkter fr\u00e5n f\u00f6retag som Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung och Qualcomm). <\/p>\n

Huvudsyftet med Elk \u00e4r att skapa firmware f\u00f6r mikrokontroller p\u00e5 JavaScript, som utf\u00f6r olika automatiseringsuppgifter. Motorn \u00e4r ocks\u00e5 l\u00e4mplig f\u00f6r inb\u00e4ddning av JavaScript-handl\u00e4ggare i C\/C++-applikationer. F\u00f6r att anv\u00e4nda motorn i sin kod r\u00e4cker det med att placera filen elk.c i koden, inkludera headerfilen elk.h och anv\u00e4nda anropet js_eval. Anrop fr\u00e5n JavaScript-skript av funktioner definierade i C\/C++-koden och vice versa \u00e4r till\u00e5tet. JavaScript-koden exekveras i en skyddad och isolerad milj\u00f6 fr\u00e5n huvudkoden med hj\u00e4lp av en tolk som inte genererar bytekod och inte anv\u00e4nder dynamisk minnesallokering. <\/p>\n

I Elk implementeras en liten men tillr\u00e4cklig delm\u00e4ngd av specifikationen Ecmascript 6 f\u00f6r att skapa arbetsfl\u00f6den. I synnerhet st\u00f6djer den en grundl\u00e4ggande upps\u00e4ttning operat\u00f6rer och typer, men det finns inget st\u00f6d f\u00f6r arrayer, prototyper, uttryck f\u00f6r this, new och delete. Ist\u00e4llet f\u00f6r var och const rekommenderas att anv\u00e4nda let, och ist\u00e4llet f\u00f6r do, switch och for \u2014 while. Ingen standardbibliotek tillhandah\u00e5lls, dvs. det finns inga s\u00e5dana objekt som Date, Regexp, Function, String och Number.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a JavaScript-\u0434\u0432\u0438\u0436\u043a\u0430 elk 2.0.9, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u043c\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438, \u0442\u0430\u043a\u0438\u043c\u0438 \u043a\u0430\u043a \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u044b, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043f\u043b\u0430\u0442\u044b ESP32 \u0438 Arduino Nano \u0441 2 \u041a\u0411 \u041e\u0417\u0423 \u0438 30\u041a\u0411 Flash. \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043c\u0430\u0448\u0438\u043d\u044b \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e 100 \u0431\u0430\u0439\u0442 \u043f\u0430\u043c\u044f\u0442\u0438 \u0438 20 \u041a\u0411 \u043c\u0435\u0441\u0442\u0430 \u043d\u0430 \u043d\u0430\u043a\u043e\u043f\u0438\u0442\u0435\u043b\u0435. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 […]<\/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-101400","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\udd47Projektet elk utvecklar en kompakt JavaScript-motor f\u00f6r mikrokontroller | ProHoster","description":"En ny version av JavaScript-motorn elk 2.0.9 \u00e4r tillg\u00e4nglig, avsedd f\u00f6r anv\u00e4ndning i resursbegr\u00e4nsade system, s\u00e5som mikrokontroller, inklusive ESP32-kort och Arduino Nano med 2 KB RAM och 30 KB Flash.","canonical_url":"https:\/\/prohoster.info\/sv\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sv_SE","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\u041f\u0440\u043e\u0435\u043a\u0442 elk \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u0439 JavaScript-\u0434\u0432\u0438\u0436\u043e\u043a \u0434\u043b\u044f \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 | ProHoster","og:description":"\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a JavaScript-\u0434\u0432\u0438\u0436\u043a\u0430 elk 2.0.9, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u043c\u0438 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438, \u0442\u0430\u043a\u0438\u043c\u0438 \u043a\u0430\u043a \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u044b, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u043f\u043b\u0430\u0442\u044b ESP32 \u0438 Arduino Nano \u0441 2 \u041a\u0411 \u041e\u0417\u0423 \u0438 30\u041a\u0411 Flash.","og:url":"https:\/\/prohoster.info\/sv\/blog\/news\/proekt-elk-razvivaet-kompaktnyj-javascript-dvizhok-dlya-mikrokontrollerov","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":"2021-09-25T08:22:59+00:00","article:modified_time":"2021-09-25T08:22:59+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"101400","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":null,"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":"2021-09-25 08:26:23","updated":"2026-02-08 20:31:49","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/101400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/comments?post=101400"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/101400\/revisions"}],"predecessor-version":[{"id":157951,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/posts\/101400\/revisions\/157951"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/media?parent=101400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/categories?post=101400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sv\/wp-json\/wp\/v2\/tags?post=101400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}