JavaScript Modules – A Beginner's Guide

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JavaScript modules (also known as ES modules or ECMAScript modules) were created to help make JavaScript code more organized and maintainable.

Understanding how ES modules work will help you become a better JavaScript developer. In this article, we’ll cover:

  • What is a module?
  • What are ES modules? Why do we use them?
  • How to use ES modules
  • Other module systems used in JavaScript

Madison Kanna’s excellent introduction to standardized JavaScript module syntax. Of particular note, the syntax for importing from a file that includes both a default and additional named exports:

import add, { multiply, subtract } from './math.js';

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