JavaScript

Lesson in the Backend Developer Roadmap · Stage 3: Pick a Backend Language

Last updated 14 September 2026

What is JavaScript?

JavaScript is a programming language primarily used to add interactivity to websites. It allows developers to create dynamic content, control multimedia, animate images, and much more, enhancing the user experience beyond static HTML and CSS. While often associated with front-end development, JavaScript can also be used on the back-end with technologies like Node.js.

Study this in the interactive course See the whole Backend roadmap

Free resources to learn JavaScript

RoadmapVisit Dedicated JavaScript Roadmap
BookJavaScript from Beginner to Professional
ArticleThe Modern JavaScript Tutorial
VideoJavaScript Crash Course For Beginners

JavaScript: common questions

Can I learn JavaScript 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 JavaScript 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 JavaScript tutorial for beginners?

It is lesson 20 of 155 in the free Backend roadmap, in stage 3, Pick a Backend Language. If you are new to Backend, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.