AsyncIterable : Object

<p>

An async iterable object is any object that has a

%%/Symbol#asyncIterator|**Symbol.asyncIterator**%% property whose value is

a function that returns an %%/AsyncIterator|AsyncIterator%%.

</p>

<p>

You can loop over all values in an async iterable object by using a

**for await (const value of asyncIterable) { }** loop.

</p>

<p>

You may create your own async iterable object by assigning the

%%/Symbol#asyncIterator|**Symbol.asyncIterator**%% property to an

async generator function (**async function* () {}**) or an object with a

%%/AsyncIterator#next|**next()**%% method.

</p>

<p>

See %%/AsyncIterator|AsyncIterator%% for more details.

</p>

Spec:

http://www.ecma-international.org/ecma-262/10.0/#sec-asynciterable-interface

----

instance[Symbol.asyncIterator] : Function<AsyncIterator>

Returns a function that produces an AsyncIterator for this object.

<example>

class UriFetcher {

constructor(uris) {

this._uris = uris;

}

async *[Symbol.asyncIterator]() {

for (const uri of this._uris) {

const response = await fetch(uri);

yield await response.text();

}

}

}

const fetcher = new UriFetcher(['/', '/Array']);

for await (const page of fetcher) {

console.log(page.substring(0, 100));

}

</example>