ESModules

Lesson in the JavaScript Roadmap · Stage 13: Using (this) keyword

Last updated 14 September 2026

What is ESModules?

ESModules is a standard that was introduced with ES6 (2015). The idea was to standardize how JS modules work and implement these features in browsers. This standard is widely used with frontend frameworks such as react and can also be used in the backend with Node.js. Sometimes these modules will be written with a .mjs extension.

Study this in the interactive course See the whole JavaScript roadmap

Free resources to learn ESModules

ArticleFull ESM module overview from MDN
ArticleFull ESM module overview from js.info
ArticleNode.js documentation for ESModules
VideoJavaScript ES6 Modules Simplified

ESModules: common questions

Can I learn ESModules in Hindi?

This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain ESModules in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.

Is this ESModules tutorial for beginners?

It is lesson 99 of 124 in the free JavaScript roadmap, in stage 13, Using (this) keyword. If you are new to JavaScript, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.