2022-07-05 12:42:31 +00:00
---
sidebar_label: Page.emulateMediaFeatures
---
# Page.emulateMediaFeatures() method
**Signature:**
```typescript
class Page {emulateMediaFeatures(features?: MediaFeature[]): Promise< void > ;}
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| features | [MediaFeature ](./puppeteer.mediafeature.md )\[\] | < i > (Optional)</ i > < code > < ?Array< Object>> </ code > Given an array of media feature objects, emulates CSS media features on the page. Each media feature object must have the following properties: |
**Returns:**
Promise< void>
## Example
```ts
await page.emulateMediaFeatures([
{ name: 'prefers-color-scheme', value: 'dark' },
]);
await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
// → true
await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
// → false
await page.emulateMediaFeatures([
{ name: 'prefers-reduced-motion', value: 'reduce' },
]);
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: reduce)').matches
);
// → true
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: no-preference)').matches
);
// → false
await page.emulateMediaFeatures([
{ name: 'prefers-color-scheme', value: 'dark' },
{ name: 'prefers-reduced-motion', value: 'reduce' },
]);
await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
// → true
await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
// → false
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: reduce)').matches
);
// → true
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: no-preference)').matches
);
// → false
await page.emulateMediaFeatures([{ name: 'color-gamut', value: 'p3' }]);
await page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);
// → true
await page.evaluate(() => matchMedia('(color-gamut: p3)').matches);
// → true
await page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);
// → false
```
