# Number

JavaScript's main numeric type for both whole and fractional numbers.

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

**Number** — JavaScript's main numeric type for both whole and fractional numbers.

```javascript
const temperature = 72.5;
```

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/number