JavaScript promises are a powerful feature for handling asynchronous operations. A promise is an object that represents the eventual completion (or failure) of an asynchronous operation and its resulting value. Promises allow you to write cleaner code by avoiding callback hell, making it easier to read and maintain.
When you create a promise, it can be in one of three states: pending, fulfilled, or rejected. You can chain promises together using the .then()
and .catch()
methods to handle success and error cases. Understanding how to work with promises is crucial for modern JavaScript development, especially when dealing with APIs and asynchronous data fetching.