{"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\/de\/blog\/news\/v-yazyk-javascript-predlozheno-dobavit-sintaksis-s-informacziej-o-tipah","title":{"rendered":"In die Programmiersprache JavaScript soll eine Syntax mit Typinformationen eingef\u00fchrt werden.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Die Unternehmen Microsoft, Igalia und Bloomberg haben die Initiative ergriffen, einen Syntax zur expliziten Typdefinition in die JavaScript-Spezifikation aufzunehmen, der dem Syntax \u00e4hnelt, der in der Programmiersprache TypeScript verwendet wird. Derzeit ist der Prototyp der \u00c4nderungen, die f\u00fcr die Aufnahme in den ECMAScript-Standard vorgeschlagen wurden, zur vorl\u00e4ufigen Diskussion (Stage 0) vorgelegt. Bei der bevorstehenden Sitzung des TC39-Ausschusses im M\u00e4rz ist geplant, zur ersten Phase der Pr\u00fcfung des Vorschlags \u00fcberzugehen und die Expertise der ECMA-Community einzubeziehen.    <\/p>\n<p>Das Vorhandensein klar definierter Informationen zu Typen wird viele Fehler im Entwicklungsprozess vermeiden, die M\u00f6glichkeit bieten, zus\u00e4tzliche Optimierungstechniken zu nutzen, das Debugging vereinfachen und den Code lesbarer und einfacher f\u00fcr die Nachbearbeitung und Unterst\u00fctzung durch andere Entwickler machen. Die Unterst\u00fctzung von Typen wird als optionale M\u00f6glichkeit angeboten \u2013 JavaScript-Engines und Laufzeiten, die keine Typ\u00fcberpr\u00fcfung unterst\u00fctzen, ignorieren die Annotationsinformationen zu Typen und verarbeiten den Code wie bisher, wobei sie die Typinformationen als Kommentare betrachten. Typpr\u00fcfungswerkzeuge k\u00f6nnen jedoch auf Grundlage der verf\u00fcgbaren Informationen Fehler im Zusammenhang mit einer falschen Verwendung von Typen identifizieren.    <\/p>\n<p>Im Gegensatz zu den durch Kommentare in JSDoc definierten Typinformationen wird die direkte Angabe von Typen in den Variablendeklarationskonstrukten den Code \u00fcbersichtlicher, verst\u00e4ndlicher und einfacher editierbar machen. Zum Beispiel werden integrierte Entwicklungsumgebungen, die TypeScript unterst\u00fctzen, sofort Fehler im typisierten JavaScript-Code hervorheben k\u00f6nnen, ohne zus\u00e4tzliche Konvertierungen. Dar\u00fcber hinaus erm\u00f6glicht die integrierte Typunterst\u00fctzung die Ausf\u00fchrung von Programmen, die in typisierten Dialekten von JavaScript wie TypeScript und Flow geschrieben sind, ohne eine Transpilation von einer Sprache in eine andere.             <center><img decoding=\"async\" alt=\"In die Programmiersprache JavaScript soll eine Syntax mit Typinformationen eingef\u00fchrt werden.\" src=\"\/wp-content\/uploads\/2022\/03\/def4910b725831c1acf4c1ef1b2efca5.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>\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 &#171;string&#187;, &#171;number&#187; \u0438 &#171;boolean&#187;, \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 (&#171;number[]&#187;). \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 (&#171;string | number&#187;) \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&lt;T&gt;(x: T) {        return x;     }       function foo(x: string | number): string | number {        if (typeof x === number) {            return x + 1        }        else {             return x + &#171;!&#187;        }     }<br \/>\n<br \/>Quelle: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56850\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 [&hellip;]<\/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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 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