# Block Scope

The region inside braces where let and const declarations are available.

## What is **Block Scope** in JavaScript?

**Block Scope** — The region inside braces where let and const declarations are available.

```javascript
if (orderReady) {
    const message = "Ready";
}
```

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/block-scope