Promises

Promises are a much better way to work with asynchronous code in JavaScript than the old and error-prone callback approach. They were introduced into JavaScript with ECMAScript 6. Using promises, we can manage extremely complex asynchronous code with rigorous error-handling setup, write code in a more or less synchronous style, and keep ourselves from running into the so-called callback hell.

Visit the following resources to learn more:

• A Detailed Introduction to Promises
• JavaScript Promises - Basics
• JavaScript Promises - Chaining
• JavaScript Promises - Error Handling