How do I use async iterators in JavaScript?

How do I use async iterators in JavaScript?

Async iterators allow you to work with asynchronous data streams in a more manageable way. You can use the for await...of loop to iterate over data that is fetched asynchronously.

Can you give me an example of how to implement one?

Sure! Here's a simple example:

async function* asyncGenerator() {
    for (let i = 0; i < 5; i++) {
        await new Promise(resolve => setTimeout(resolve, 1000)); // Simulate async operation
        yield i;
    }
}

(async () => {
    for await (const value of asyncGenerator()) {
        console.log(value);
    }
})();

What happens if I don't use 'await' in the loop?

If you don't use 'await', the loop will not wait for the promise to resolve, and you may end up with unexpected results or errors.

Are async iterators supported in all browsers?

Async iterators are supported in modern browsers, but you should check compatibility for older versions or consider using a polyfill.