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Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Nikolay Vitkov <nvitkov@chromium.org>
96 lines
2.1 KiB
Markdown
96 lines
2.1 KiB
Markdown
---
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sidebar_label: Page.emulateMediaFeatures
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---
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# Page.emulateMediaFeatures() method
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#### Signature:
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```typescript
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class Page {
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abstract emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;
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}
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```
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## Parameters
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<table><thead><tr><th>
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Parameter
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</th><th>
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Type
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</th><th>
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Description
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</th></tr></thead>
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<tbody><tr><td>
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features
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</td><td>
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[MediaFeature](./puppeteer.mediafeature.md)\[\]
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</td><td>
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_(Optional)_ `<?Array<Object>>` Given an array of media feature objects, emulates CSS media features on the page. Each media feature object must have the following properties:
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</td></tr>
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</tbody></table>
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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.emulateMediaFeatures([
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{name: 'prefers-color-scheme', value: 'dark'},
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]);
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await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
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// → true
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await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
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// → false
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await page.emulateMediaFeatures([
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{name: 'prefers-reduced-motion', value: 'reduce'},
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]);
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await page.evaluate(
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() => matchMedia('(prefers-reduced-motion: reduce)').matches
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);
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// → true
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await page.evaluate(
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() => matchMedia('(prefers-reduced-motion: no-preference)').matches
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);
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// → false
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await page.emulateMediaFeatures([
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{name: 'prefers-color-scheme', value: 'dark'},
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{name: 'prefers-reduced-motion', value: 'reduce'},
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]);
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await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
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// → true
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await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
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// → false
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await page.evaluate(
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() => matchMedia('(prefers-reduced-motion: reduce)').matches
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);
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// → true
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await page.evaluate(
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() => matchMedia('(prefers-reduced-motion: no-preference)').matches
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);
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// → false
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await page.emulateMediaFeatures([{name: 'color-gamut', value: 'p3'}]);
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await page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);
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// → true
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await page.evaluate(() => matchMedia('(color-gamut: p3)').matches);
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// → true
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await page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);
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// → false
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```
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