JavaScript
The programming language every web browser runs. It makes web pages interactive, and it is the most used language in the world.
What it tells you about a developer
Strong JavaScript means web development, frontend by default, and full-stack when Node.js appears alongside it. The language is everywhere, so read the projects for depth. Recent professional work is usually written in TypeScript.
- Type
- Language
- Released
- 1995
- Used in
- FrontendBackend
Every website with a button that responds is running JavaScript. Through Node.js it also runs on servers, so one language can cover a whole product. Nearly every web developer writes it. JavaScript and Java are separate languages with no shared history, despite the names. Depth shows in what someone built with it, and in whether they have moved to TypeScript, which adds error checking on top.