# Code Block (/docs/components/code-block)

A syntax-highlighted code block with filename, line numbers, and copy button.

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<ComponentPreview name="code-block-demo" />

### Installation [#installation]

<CodeTabs>
  <TabsList>
    <TabsTrigger value="cli">
      Command
    </TabsTrigger>

    <TabsTrigger value="manual">
      Manual
    </TabsTrigger>
  </TabsList>

  <TabsContent value="cli">
    ```bash
    npx shadcn@latest add @slidecn/code-block
    ```
  </TabsContent>

  <TabsContent value="manual">
    <Steps>
      <Step>
        Install the following dependencies:
      </Step>

      ```bash
      npm install @revealjs/react
      ```

      <Step>
        Copy the component source into your project.
      </Step>

      <ComponentSource src="registry/slidecn/ui/code-block.tsx" title="components/slidecn/code-block.tsx" />

      <Step>
        Update the import paths to match your project setup.
      </Step>
    </Steps>
  </TabsContent>
</CodeTabs>

## Usage [#usage]

```tsx
import CodeBlock from "@/components/slides/code-block";

function MyPresentation() {
  return (
    <Deck>
      <CodeBlock
        language="python"
        lineNumbers="1|3-5"
        filename="main.py"
        showCopy={true}
      >
        {`def hello():
    print("Hello, world!")`}
      </CodeBlock>
    </Deck>
  );
}
```

## API Reference [#api-reference]

### CodeBlock [#codeblock]

| Prop            | Type                | Default  | Description                    |
| --------------- | ------------------- | -------- | ------------------------------ |
| `language`      | `string`            | required | Code language                  |
| `children`      | `string`            | required | Code content                   |
| `lineNumbers`   | `boolean \| string` | -        | Show or configure line numbers |
| `filename`      | `string`            | -        | Display filename in header     |
| `showCopy`      | `boolean`           | `true`   | Show copy button               |
| `autoAnimateId` | `string`            | -        | Auto-animate data ID           |
| `startFrom`     | `number`            | -        | Starting line number           |
| `trim`          | `boolean`           | `true`   | Trim whitespace                |