What is the Promise Race Method in JavaScript?

Can you explain the Promise Race Method in JavaScript?

Sure! The Promise Race Method is a way to handle multiple promises in JavaScript. It returns a single promise that resolves or rejects as soon as one of the promises in the iterable resolves or rejects.

How does it differ from Promise.all?

Unlike Promise.all, which waits for all promises to resolve or any to reject, Promise.race resolves as soon as the first promise settles.

Can you give me an example of how to use it?

Of course! Here's a simple example:

const promise1 = new Promise((resolve, reject) => setTimeout(resolve, 100, 'First!'));
const promise2 = new Promise((resolve, reject) => setTimeout(reject, 200, 'Second!'));

Promise.race([promise1, promise2])
  .then(result => console.log(result))
  .catch(error => console.log(error));

What happens if all promises reject?

If all promises reject, the Promise.race will also reject with the reason of the first promise that rejected.