JavaScript Tutorial
JavaScript Promises: Uses, Methods, Examples
Table of Contents
- Introduction
- What Are JavaScript Promises?
- Why Do We Use Promises in JS?
- Nested Promises
- JavaScript Promise Object Properties
- How to Use Promises in JavaScript
- JavaScript Promise Examples
- JavaScript Promise Methods
- Benefits of Using JS Promises
- Challenges of Using JS Promises
FAQs About JavaScript Promises
A promise is an object that represents the eventual result (or failure) of an asynchronous operation.
Promises avoid "callback hell" by allowing sequential execution with .then() chaining.
Uncaught promise rejections result in runtime warnings and can crash the application in strict modes.
Not entirely. Promises are great for linear workflows but may require additional handling for complex callback patterns.
.then() handles resolved promises.
.catch() handles rejected promises.
Use Promise.all() when you need to wait for multiple asynchronous tasks to complete before proceeding.
