puppeteer/website/versioned_docs/version-19.6.0/api/puppeteer.page.emulatemediafeatures.md
release-please[bot] e13e9647fc
chore: release main (#9501)
🤖 I have created a release *beep* *boop*
---


<details><summary>puppeteer: 19.6.0</summary>

##
[19.6.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-v19.5.2...puppeteer-v19.6.0)
(2023-01-23)


### Miscellaneous Chores

* **puppeteer:** Synchronize puppeteer versions


### Dependencies

* The following workspace dependencies were updated
  * dependencies
    * puppeteer-core bumped from 19.5.2 to 19.6.0
</details>

<details><summary>puppeteer-core: 19.6.0</summary>

##
[19.6.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-core-v19.5.2...puppeteer-core-v19.6.0)
(2023-01-23)


### Features

* **chromium:** roll to Chromium 110.0.5479.0 (r1083080)
([#9500](https://github.com/puppeteer/puppeteer/issues/9500))
([06e816b](06e816bbfa)),
closes [#9470](https://github.com/puppeteer/puppeteer/issues/9470)
* **page:** Adding support for referrerPolicy in `page.goto`
([#9561](https://github.com/puppeteer/puppeteer/issues/9561))
([e3d69ec](e3d69ec554))


### Bug Fixes

* firefox revision resolution should not update chrome revision
([#9507](https://github.com/puppeteer/puppeteer/issues/9507))
([f59bbf4](f59bbf4014)),
closes [#9461](https://github.com/puppeteer/puppeteer/issues/9461)
* improve screenshot method types
([#9529](https://github.com/puppeteer/puppeteer/issues/9529))
([6847f88](6847f8835f))
</details>

---
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Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
2023-01-23 17:48:02 +01:00

2.4 KiB

sidebar_label
Page.emulateMediaFeatures

Page.emulateMediaFeatures() method

Signature:

class Page {
  emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;
}

Parameters

Parameter Type Description
features MediaFeature[] (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:

Returns:

Promise<void>

Example

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