puppeteer/assets/js/eea57314.7edcc1f7.js

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method"),(0,r.kt)("h4",n({},{id:"signature"}),"Signature:"),(0,r.kt)("pre",null,(0,r.kt)("code",n({parentName:"pre"},{className:"language-typescript"}),"class Page {\n  abstract emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;\n}\n")),(0,r.kt)("h2",n({},{id:"parameters"}),"Parameters"),(0,r.kt)("table",null,(0,r.kt)("thead",{parentName:"table"},(0,r.kt)("tr",{parentName:"thead"},(0,r.kt)("th",n({parentName:"tr"},{align:null}),"Parameter"),(0,r.kt)("th",n({parentName:"tr"},{align:null}),"Type"),(0,r.kt)("th",n({parentName:"tr"},{align:null}),"Description"))),(0,r.kt)("tbody",{parentName:"table"},(0,r.kt)("tr",{parentName:"tbody"},(0,r.kt)("td",n({parentName:"tr"},{align:null}),"features"),(0,r.kt)("td",n({parentName:"tr"},{align:null}),(0,r.kt)("a",n({parentName:"td"},{href:"/api/puppeteer.mediafeature"}),"MediaFeature"),"[","]"),(0,r.kt)("td",n({parentName:"tr"},{align:null}),(0,r.kt)("em",{parentName:"td"},"(Optional)")," ",(0,r.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,r.kt)("p",null,(0,r.kt)("strong",{parentName:"p"},"Returns:")),(0,r.kt)("p",null,"Promise","<","void",">"),(0,r.kt)("h2",n({},{id:"example"}),"Example"),(0,r.kt)("pre",null,(0,r.kt)("code",n({parentName:"pre"},{className:"language-ts"}),"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")))}s.isMDXComponent=!0}}]);