{"id":103540,"date":"2022-03-15T03:37:00","date_gmt":"2022-03-15T01:37:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yazyk-javascript-predlozheno-dobavit-sintaksis-s-informacziej-o-tipah"},"modified":"2022-03-15T03:37:00","modified_gmt":"2022-03-15T01:37:01","slug":"v-yazyk-javascript-predlozheno-dobavit-sintaksis-s-informacziej-o-tipah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/v-yazyk-javascript-predlozheno-dobavit-sintaksis-s-informacziej-o-tipah","title":{"rendered":"JavaScripti keelde pakutakse lisada s\u00fcntaks t\u00fc\u00fcpide kohta.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Microsoft, Igalia ja Bloomberg esitasid algatuse, et lisada JavaScripti spetsifikatsiooni s\u00fcntaks, mis v\u00f5imaldab t\u00fc\u00fcpide selget m\u00e4\u00e4ratlemist, sarnanedes TypeScripti keeles kasutatavale s\u00fcntaksile. Praegu on ECMAScripti standardisse lisamiseks ettepanekute protot\u00fc\u00fcp esialgseteks aruteludeks (Stage 0). TC39 komitee l\u00e4himas m\u00e4rtsikuu koosolekus plaanitakse liikuda ettepaneku arutamise esimesse etappi, kaasates ekspertide kogukonda ECMA-st. <\/p>\n

T\u00fc\u00fcpide kohta selgelt m\u00e4\u00e4ratletud teabe olemasolu aitab v\u00e4ltida arenduse k\u00e4igus paljusid vigu, v\u00f5imaldab kasutada t\u00e4iendavaid optimeerimistehnikaid, lihtsustab silumist ja muudab koodi loetavamaks ning lihtsamaks teiste arendajate jaoks t\u00e4iustamiseks ja toetamiseks. T\u00fc\u00fcpide toetamine pakutakse ellu viia valikulise v\u00f5imalusena \u2014 JavaScripti mootorid ja runtime, mis ei toeta t\u00fc\u00fcpide kontrollimist, ignoreerivad t\u00fc\u00fcbiinfo annotatsioone ja t\u00f6\u00f6tlevad koodi nagu varem, k\u00e4sitledes t\u00fc\u00fcpide andmeid kui kommentaare. Kuid t\u00fc\u00fcpide kontrollimise t\u00f6\u00f6riistad suudavad olemasoleva teabe alusel tuvastada vigu, mis on seotud t\u00fc\u00fcpide vale kasutamisega. <\/p>\n

Erinevalt JSDoci annotatsioonide kaudu m\u00e4\u00e4ratletud t\u00fc\u00fcpide teabest, mis esitatakse kommentaaride vormis, muudab muutujate m\u00e4\u00e4ratlemise struktuurides t\u00fc\u00fcpide otsene m\u00e4\u00e4ramine koodi selgemaks, arusaadavamaks ja lihtsamaks muudetavaks. N\u00e4iteks saavad TypeScript'i toe pakkavad integreeritud arenduskeskkonnad koheselt tuvastada vigu t\u00fc\u00fcbitud JavaScript-koodis ilma t\u00e4iendavate \u00fcmberprotsessimisteta. Pealegi v\u00f5imaldab t\u00fc\u00fcpide sisseehitatud tugi k\u00e4ivitada programme, mis on kirjutatud t\u00fc\u00fcbitud JavaScripti dialektides, nagu TypeScript ja Flow, ilma \u00fchelt keelelt teisele transpileerimata.

\"JavaScripti<\/center> <\/p>\n

\u0418\u0437 \u0442\u0438\u043f\u043e\u0432 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c «string», «number» \u0438 «boolean», \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u043e\u0436\u043d\u043e \u0431\u0443\u0434\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0438 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445, \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0439, \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u0432, \u043f\u043e\u043b\u0435\u0439 \u043a\u043b\u0430\u0441\u0441\u043e\u0432, \u0442\u0438\u043f\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043c\u0430\u0441\u0441\u0438\u0432\u043e\u0432 («number[]»). \u041f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u0442\u0430\u043a\u0436\u0435 \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0442\u044c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0451\u043d\u043d\u044b\u0445 \u0442\u0438\u043f\u043e\u0432 («string | number») \u0438 \u0434\u0436\u0435\u043d\u0435\u0440\u0438\u043a\u043e\u0432. let x: string; function add(a: number, b: number) { return a + b; } interface Person { name: string; age: number; } function foo<T>(x: T) { return x; } function foo(x: string | number): string | number { if (typeof x === number) { return x + 1 } else { return x + «!» } }
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Microsoft, Igalia \u0438 Bloomberg \u0432\u044b\u0441\u0442\u0443\u043f\u0438\u043b\u0438 \u0441 \u0438\u043d\u0438\u0446\u0438\u0430\u0442\u0438\u0432\u043e\u0439 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044e JavaScript \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u0430 \u0434\u043b\u044f \u044f\u0432\u043d\u043e\u0433\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0442\u0438\u043f\u043e\u0432, \u043f\u043e\u0445\u043e\u0436\u0435\u0433\u043e \u043d\u0430 \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0439 \u0432 \u044f\u0437\u044b\u043a\u0435 TypeScript. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442 ECMAScript, \u0432\u044b\u043d\u0435\u0441\u0435\u043d \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0439 (Stage 0). \u041d\u0430 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0435\u043c \u043c\u0430\u0440\u0442\u043e\u0432\u0441\u043a\u043e\u043c \u0437\u0430\u0441\u0435\u0434\u0430\u043d\u0438\u0438 \u043a\u043e\u043c\u0438\u0442\u0435\u0442\u0430 TC39 \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0439\u0442\u0438 \u043d\u0430 \u043f\u0435\u0440\u0432\u0443\u044e \u0441\u0442\u0430\u0434\u0438\u044e \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u0438\u044f \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0441 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":103541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47JavaScripti keelde soovitakse lisada t\u00fc\u00fcbinfot sisaldav s\u00fcntaks | ProHoster","description":"Ettev\u00f5tted Microsoft, Igalia ja Bloomberg on algatanud ettepaneku lisada JavaScripti spesifikatsiooni s\u00fcntaks, mis v\u00f5imaldab t\u00fc\u00fcpide selget m\u00e4\u00e4ratlemist, sarnanedes TypeScripti keeles kasutatavale s\u00fcntaksile. Praegu on muudatusettepaneku protot\u00fc\u00fcp, mis on ette n\u00e4htud ECMAScripti standardisse lisamiseks, arutamiseks esialgses etapis (Stage 0). 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\u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439, \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442 ECMAScript, \u0432\u044b\u043d\u0435\u0441\u0435\u043d \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0445 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0439 (Stage 0). \u041d\u0430 \u0431\u043b\u0438\u0436\u0430\u0439\u0448\u0435\u043c \u043c\u0430\u0440\u0442\u043e\u0432\u0441\u043a\u043e\u043c \u0437\u0430\u0441\u0435\u0434\u0430\u043d\u0438\u0438 \u043a\u043e\u043c\u0438\u0442\u0435\u0442\u0430 TC39 \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0439\u0442\u0438 \u043d\u0430 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