AsyncFunction
Baseline
Widely available
This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2017å¹´4æ.
AsyncFunction ãªãã¸ã§ã¯ãã¯ãéåæé¢æ°ã®ã¡ã½ãããæä¾ãã¾ããJavaScript ã§ã¯ããã¹ã¦ã®éåæé¢æ°ãå®éã« AsyncFunction ãªãã¸ã§ã¯ãã§ãã
AsyncFunction ã¯ã°ãã¼ãã«ãªãã¸ã§ã¯ãã§ã¯ãªããã¨ã«æ³¨æãã¦ãã ãããããã¯ä»¥ä¸ã®ãããªã³ã¼ãã§åå¾ãããã¨ãã§ãã¾ãã
const AsyncFunction = async function () {}.constructor;
AsyncFunction 㯠Function ã®ãµãã¯ã©ã¹ã§ãã
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AsyncFunction()-
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AsyncFunctionãªãã¸ã§ã¯ããçæãã¾ãã
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ã¤ã³ã¹ã¿ã³ã¹ããããã£ã親ã§ãã Function ããç¶æ¿ãã¦ãã¾ãã
ãããã®ããããã£ã¯ AsyncFunction.prototype ã§å®ç¾©ããã¦ããããã¹ã¦ã® AsyncFunction ã®ã¤ã³ã¹ã¿ã³ã¹ã§å
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AsyncFunction.prototype.constructor-
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AsyncFunctionã¤ã³ã¹ã¿ã³ã¹ã®å ´åãåæå¤ã¯AsyncFunctionã³ã³ã¹ãã©ã¯ã¿ã¼ã§ãã AsyncFunction.prototype[Symbol.toStringTag]-
[Symbol.toStringTag]ããããã£ã®åæå¤ã¯ãæåå"AsyncFunction"ã§ãããã®ããããã£ã¯Object.prototype.toString()ã§ä½¿ç¨ããã¾ãã
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AsyncFunction ã®ã¤ã³ã¹ã¿ã³ã¹ã«ã¯ prototype ããããã£ã¯ããã¾ããã
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親ã§ãã Function ããç¶æ¿ããã¤ã³ã¹ã¿ã³ã¹ã¡ã½ãããããã¾ãã
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| Specification |
|---|
| ECMAScript® 2027 Language Specification # sec-async-function-objects |