---
title: Code Block
description: This section previews the Code Block features in markdown.
---

The Code Block in this documentation allows you to display code snippets with optional line numbering and line highlighting.

## Preview

```javascript:main.js showLineNumbers {3-4}
function isRocketAboutToCrash() {
    // Check if the rocket is stable
    if (!isStable()) {
        NoCrash(); // Prevent the crash
    }
}
```

In this example, line numbers are displayed for lines 1 to 4. You can specify which lines to highlight using the format `{2,3-5}`.

## Usage

You can directly use the following syntax to create a code block with line numbers and highlight specific lines:

````plaintext
```javascript:main.js showLineNumbers {3-4}
function isRocketAboutToCrash() {
    // Check if the rocket is stable
    if (!isStable()) {
        NoCrash(); // Prevent the crash
    }
}
```
````

### Features

- **Line Numbers**: Enable line numbers by adding `showLineNumbers` after the opening backticks.
- **Highlight Lines**: Specify lines to highlight using curly braces (e.g., `{2,3-5}`).
- **Syntax Highlighting**: Use the appropriate language for syntax highlighting.

