JavaScript

Lesson in the DevOps Roadmap · Stage 1: Learn a Programming Language

Last updated 14 September 2026

What is JavaScript?

JavaScript is a high-level, interpreted programming language primarily used for client-side web development. It enables interactive and dynamic content on web pages, allowing developers to create responsive user interfaces and complex web applications. JavaScript is a core technology of the World Wide Web, alongside HTML and CSS. It supports object-oriented, imperative, and functional programming paradigms. With the advent of Node.js, JavaScript has also become popular for server-side development. The language features dynamic typing, first-class functions, and prototype-based object-orientation. JavaScript's ubiquity in web browsers, extensive ecosystem of libraries and frameworks (like React, Angular, and Vue.js), and its versatility across front-end and back-end development have made it one of the most widely used programming languages in modern software development.

Study this in the interactive course See the whole DevOps roadmap

Free resources to learn JavaScript

RoadmapVisit Dedicated JavaScript Roadmap
ArticleThe Modern JavaScript Tutorial
VideoJavaScript Crash Course for Beginners
FeedExplore top posts about JavaScript

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 6 of 137 in the free DevOps roadmap, in stage 1, Learn a Programming Language. If you are new to DevOps, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.