2022-07-05 13:41:43 +00:00
---
sidebar_label: Page.emulateMediaType
---
# Page.emulateMediaType() method
**Signature:**
```typescript
class Page {
emulateMediaType(type?: string): Promise< void > ;
}
```
## Parameters
| Parameter | Type | Description |
| --------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| 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. |
**Returns:**
Promise< void>
## Example
```ts
await page.evaluate(() => matchMedia('screen').matches);
// → true
await page.evaluate(() => matchMedia('print').matches);
// → false
await page.emulateMediaType('print');
await page.evaluate(() => matchMedia('screen').matches);
// → false
await page.evaluate(() => matchMedia('print').matches);
// → true
await page.emulateMediaType(null);
await page.evaluate(() => matchMedia('screen').matches);
// → true
await page.evaluate(() => matchMedia('print').matches);
// → false
```
