Async iterators and the for await..of loop
Widely available
Asynchronous iterator objects, such as those returned by promises or generator functions, are iterable with the for await .. of loop.
To learn more, see
AsyncIterator,
AsyncIterator.prototype[Symbol.asyncIterator](),
Symbol.asyncIterator,
for await...of at MDN.
Compatibility
- Chrome 63 Released on 2017-12-06
- Chrome Android 63 Released on 2017-12-05
- Edge 79 Released on 2020-01-15
- Firefox 57 Released on 2017-11-14
- Firefox for Android 57 Released on 2017-11-28
- Safari 12 Released on 2018-09-17
- Safari on iOS 12 Released on 2018-09-17
Specifications
- ECMAScript Language Specification (#sec-asynciteratorprototype), from TC39 (Ecma International).
- ECMAScript Language Specification (#sec-for-in-and-for-of-statements), from TC39 (Ecma International).