45 lines
1.4 KiB
Markdown
45 lines
1.4 KiB
Markdown
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---
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sidebar_label: Page.emulateMediaType
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---
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# Page.emulateMediaType() method
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**Signature:**
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```typescript
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class Page {
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emulateMediaType(type?: string): Promise<void>;
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}
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```
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## Parameters
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| Parameter | Type | Description |
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| --------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
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| type | string | <i>(Optional)</i> Changes the CSS media type of the page. The only allowed values are <code>screen</code>, <code>print</code> and <code>null</code>. Passing <code>null</code> disables CSS media emulation. |
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**Returns:**
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Promise<void>
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## Example
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```ts
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await page.evaluate(() => matchMedia('screen').matches);
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// → true
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await page.evaluate(() => matchMedia('print').matches);
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// → false
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await page.emulateMediaType('print');
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await page.evaluate(() => matchMedia('screen').matches);
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// → false
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await page.evaluate(() => matchMedia('print').matches);
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// → true
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await page.emulateMediaType(null);
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await page.evaluate(() => matchMedia('screen').matches);
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// → true
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await page.evaluate(() => matchMedia('print').matches);
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// → false
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```
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