The AsyncGeneratorFunction() constructor creates AsyncGeneratorFunction objects.
Note that AsyncGeneratorFunction is not a global object. It could be obtained by evaluating the following code.
const AsyncGeneratorFunction = async function* () {}.constructor;
The AsyncGeneratorFunction() constructor is not intended to be used directly, and all caveats mentioned in the Function() description apply to AsyncGeneratorFunction().
new AsyncGeneratorFunction(functionBody)
new AsyncGeneratorFunction(arg1, functionBody)
new AsyncGeneratorFunction(arg1, arg2, functionBody)
new AsyncGeneratorFunction(arg1, arg2, /* …, */ argN, functionBody)
AsyncGeneratorFunction(functionBody)
AsyncGeneratorFunction(arg1, functionBody)
AsyncGeneratorFunction(arg1, arg2, functionBody)
AsyncGeneratorFunction(arg1, arg2, /* …, */ argN, functionBody)
Note: AsyncGeneratorFunction() can be called with or without new. Both create a new AsyncGeneratorFunction instance.
See Function().
The following example uses the AsyncGeneratorFunction constructor to create an async generator function.
const AsyncGeneratorFunction = async function* () {}.constructor;
const createAsyncGenerator = new AsyncGeneratorFunction("a", "yield a * 2");
const asyncGen = createAsyncGenerator(10);
asyncGen.next().then((res) => console.log(res.value)); // 20
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
AsyncGeneratorFunction |
63 | 79 | 55 | 50 | 12 | 63 | 55 | 46 | 12 | 8.0 | 63 | 1.0 | 10.0.0 | |
© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/AsyncGeneratorFunction/AsyncGeneratorFunction