# ECMAScript

The language standard that defines how JavaScript syntax and behavior work.

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

**ECMAScript** — The language standard that defines how JavaScript syntax and behavior work.

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/ecmascript