# JavaScript

A programming language used to add behavior to web pages and build applications in browsers, servers, and other runtimes.

## What is **JavaScript** in JavaScript?

**JavaScript** — A programming language used to add behavior to web pages and build applications in browsers, servers, and other runtimes.

```javascript
const greeting = "Hello, JavaScript!";
```

Level: Novice · [More JavaScript terms at this level](https://www.ask-codey.com/glossary/subjects/javascript/novice)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/javascript