Technology
What is JavaScript?
JavaScript is the programming language that makes web pages interactive — handling clicks, animations, forms, and live updates. It runs in every browser and, today, on servers too, making it one of the world's most widely used languages.
See it, don’t just read it.
Watch a 2-minute lesson with voice + animation that explains javascript.
Key things to understand
- 1It's the language that adds interactivity to web pages.
- 2It runs in every web browser without installation.
- 3It powers buttons, forms, animations, and live updates.
- 4With Node.js it also runs on servers, not just browsers.
Frequently asked questions
- What is JavaScript used for?
- Making web pages interactive — responding to clicks, validating forms, animating content, and updating data live.
- Is JavaScript the same as Java?
- No — despite the name, they're entirely different languages with different uses.
- Where does JavaScript run?
- In every web browser, and on servers via Node.js, making it usable across the whole web stack.