How can I handle multiple promises in JavaScript?

How can I handle multiple promises in JavaScript?

You can use Promise.all() to handle multiple promises concurrently. It takes an array of promises and resolves when all of them are resolved.

Can you give me an example of using Promise.all()?

Sure! Here's a simple example:

const promise1 = Promise.resolve(3);
const promise2 = new Promise((resolve, reject) => setTimeout(resolve, 100, 'foo'));
const promise3 = 42;

Promise.all([promise1, promise2, promise3]).then(values => {
  console.log(values); // [3, 'foo', 42]
});

What happens if one of the promises is rejected?

If any promise in the array is rejected, Promise.all() will reject with that reason, and the other promises will not be awaited.

Is there a way to handle promises individually?

Yes, you can use Promise.allSettled() to handle each promise individually, regardless of whether they are resolved or rejected.