puppeteer/assets/js/93c7636b.57c97044.js

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puppeteer &gt; Page &gt; emulateMediaFeatures",source:"@site/versioned_docs/version-10.0.0/puppeteer.page.emulatemediafeatures.md",sourceDirName:".",slug:"/puppeteer.page.emulatemediafeatures",permalink:"/puppeteer/docs/10.0.0/puppeteer.page.emulatemediafeatures",editUrl:"https://github.com/facebook/puppeteer/edit/main/website/versioned_docs/version-10.0.0/puppeteer.page.emulatemediafeatures.md",version:"10.0.0",frontMatter:{},sidebar:"version-10.0.0/docs",previous:{title:"puppeteer.page.emulateidlestate",permalink:"/puppeteer/docs/10.0.0/puppeteer.page.emulateidlestate"},next:{title:"puppeteer.page.emulatenetworkconditions",permalink:"/puppeteer/docs/10.0.0/puppeteer.page.emulatenetworkconditions"}},c=[{value:"Page.emulateMediaFeatures() method",id:"pageemulatemediafeatures-method",children:[]},{value:"Parameters",id:"parameters",children:[]},{value:"Example",id:"example",children:[]}],m={toc:c};function s(e){var t=e.components,a=(0,n.Z)(e,u);return(0,p.kt)("wrapper",(0,r.Z)({},m,a,{components:t,mdxType:"MDXLayout"}),(0,p.kt)("p",null,(0,p.kt)("a",{parentName:"p",href:"/puppeteer/docs/10.0.0/index"},"Home")," ",">"," ",(0,p.kt)("a",{parentName:"p",href:"/puppeteer/docs/10.0.0/puppeteer"},"puppeteer")," ",">"," ",(0,p.kt)("a",{parentName:"p",href:"/puppeteer/docs/10.0.0/puppeteer.page"},"Page")," ",">"," ",(0,p.kt)("a",{parentName:"p",href:"/puppeteer/docs/10.0.0/puppeteer.page.emulatemediafeatures"},"emulateMediaFeatures")),(0,p.kt)("h2",{id:"pageemulatemediafeatures-method"},"Page.emulateMediaFeatures() method"),(0,p.kt)("b",null,"Signature:"),(0,p.kt)("pre",null,(0,p.kt)("code",{parentName:"pre",className:"language-typescript"},"emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;\n")),(0,p.kt)("h2",{id:"parameters"},"Parameters"),(0,p.kt)("table",null,(0,p.kt)("thead",{parentName:"table"},(0,p.kt)("tr",{parentName:"thead"},(0,p.kt)("th",{parentName:"tr",align:null},"Parameter"),(0,p.kt)("th",{parentName:"tr",align:null},"Type"),(0,p.kt)("th",{parentName:"tr",align:null},"Description"))),(0,p.kt)("tbody",{parentName:"table"},(0,p.kt)("tr",{parentName:"tbody"},(0,p.kt)("td",{parentName:"tr",align:null},"features"),(0,p.kt)("td",{parentName:"tr",align:null},(0,p.kt)("a",{parentName:"td",href:"/puppeteer/docs/10.0.0/puppeteer.mediafeature"},"MediaFeature"),"[","]"),(0,p.kt)("td",{parentName:"tr",align:null},(0,p.kt)("code",null,"<","?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:")))),(0,p.kt)("b",null,"Returns:"),(0,p.kt)("p",null,"Promise","<","void",">"),(0,p.kt)("h2",{id:"example"},"Example"),(0,p.kt)("pre",null,(0,p.kt)("code",{parentName:"pre",className:"language-js"},"await page.emulateMediaFeatures([\n{ name: 'prefers-color-scheme', value: 'dark' },\n]);\nawait page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);\n// \u2192 true\nawait page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);\n// \u2192 false\n\nawait page.emulateMediaFeatures([\n{ name: 'prefers-reduced-motion', value: 'reduce' },\n]);\nawait page.evaluate(\n() => matchMedia('(prefers-reduced-motion: reduce)').matches\n);\n// \u2192 true\nawait page.evaluate(\n() => matchMedia('(prefers-reduced-motion: no-preference)').matches\n);\n// \u2192 false\n\nawait page.emulateMediaFeatures([\n{ name: 'prefers-color-scheme', value: 'dark' },\n{ name: 'prefers-reduced-motion', value: 'reduce' },\n]);\nawait page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);\n// \u2192 true\nawait page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);\n// \u2192 false\nawait page.evaluate(\n() => matchMedia('(prefers-reduced-motion: reduce)').matches\n);\n// \u2192 true\nawait page.evaluate(\n() => matchMedia('(prefers-reduced-motion: no-preference)').matches\n);\n// \u2192 false\n\nawait page.emulateMediaFeatures([{ name: 'color-gamut', value: 'p3' }]);\nawait page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);\n// \u2192 true\nawait page.evaluate(() => matchMedia('(color-gamut: p3)').matches);\n// \u2192 true\nawait page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);\n// \u2192 false\n\n")))}s.isMDXComponent=!0}}]);