What are JavaScript promises and how do they work?

Can you explain what JavaScript promises are?

Sure! JavaScript promises are objects that represent the eventual completion (or failure) of an asynchronous operation and its resulting value.

How do I create a promise in JavaScript?

You can create a promise using the Promise constructor. For example: let myPromise = new Promise((resolve, reject) => { /* async code */ });.

What are the states of a promise?

A promise can be in one of three states: pending, fulfilled, or rejected. Pending means it's still processing, fulfilled means it completed successfully, and rejected means it failed.

How do I handle the result of a promise?

You can handle the result of a promise using the .then() method for success and .catch() for errors. For example: myPromise.then(result => { /* handle success */ }).catch(error => { /* handle error */ });.