puppeteer/assets/js/912b8df6.ac274bcc.js

"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[99258],{3905:(e,t,n)=>{n.d(t,{Zo:()=>u,kt:()=>d});var a=n(67294);function r(e,t,n){return t in e?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}function i(e,t){var n=Object.keys(e);if(Object.getOwnPropertySymbols){var a=Object.getOwnPropertySymbols(e);t&&(a=a.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),n.push.apply(n,a)}return n}function p(e){for(var t=1;t<arguments.length;t++){var n=null!=arguments[t]?arguments[t]:{};t%2?i(Object(n),!0).forEach((function(t){r(e,t,n[t])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(n)):i(Object(n)).forEach((function(t){Object.defineProperty(e,t,Object.getOwnPropertyDescriptor(n,t))}))}return e}function o(e,t){if(null==e)return{};var n,a,r=function(e,t){if(null==e)return{};var 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page.",source:"@site/versioned_docs/version-17.1.1/api/puppeteer.page.emulatevisiondeficiency.md",sourceDirName:"api",slug:"/api/puppeteer.page.emulatevisiondeficiency",permalink:"/api/puppeteer.page.emulatevisiondeficiency",draft:!1,tags:[],version:"17.1.1",frontMatter:{sidebar_label:"Page.emulateVisionDeficiency"},sidebar:"sidebar",previous:{title:"Page.emulateTimezone",permalink:"/api/puppeteer.page.emulatetimezone"},next:{title:"Page.evaluate",permalink:"/api/puppeteer.page.evaluate"}},l={},c=[{value:"Parameters",id:"parameters",level:2},{value:"Example",id:"example",level:2}],u={toc:c};function s(e){let{components:t,...n}=e;return(0,r.kt)("wrapper",(0,a.Z)({},u,n,{components:t,mdxType:"MDXLayout"}),(0,r.kt)("h1",{id:"pageemulatevisiondeficiency-method"},"Page.emulateVisionDeficiency() method"),(0,r.kt)("p",null,"Simulates the given vision deficiency on the page."),(0,r.kt)("p",null,(0,r.kt)("strong",{parentName:"p"},"Signature:")),(0,r.kt)("pre",null,(0,r.kt)("code",{parentName:"pre",className:"language-typescript"},"class Page {\n  emulateVisionDeficiency(\n    type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']\n  ): Promise<void>;\n}\n")),(0,r.kt)("h2",{id:"parameters"},"Parameters"),(0,r.kt)("table",null,(0,r.kt)("thead",{parentName:"table"},(0,r.kt)("tr",{parentName:"thead"},(0,r.kt)("th",{parentName:"tr",align:null},"Parameter"),(0,r.kt)("th",{parentName:"tr",align:null},"Type"),(0,r.kt)("th",{parentName:"tr",align:null},"Description"))),(0,r.kt)("tbody",{parentName:"table"},(0,r.kt)("tr",{parentName:"tbody"},(0,r.kt)("td",{parentName:"tr",align:null},"type"),(0,r.kt)("td",{parentName:"tr",align:null},"Protocol.Emulation.SetEmulatedVisionDeficiencyRequest","[","'type'","]"),(0,r.kt)("td",{parentName:"tr",align:null},(0,r.kt)("i",null,"(Optional)")," the type of deficiency to simulate, or ",(0,r.kt)("code",null,"'none'")," to reset.")))),(0,r.kt)("p",null,(0,r.kt)("strong",{parentName:"p"},"Returns:")),(0,r.kt)("p",null,"Promise","<","void",">"),(0,r.kt)("h2",{id:"example"},"Example"),(0,r.kt)("pre",null,(0,r.kt)("code",{parentName:"pre",className:"language-ts"},"const puppeteer = require('puppeteer');\n\n(async () => {\n  const browser = await puppeteer.launch();\n  const page = await browser.newPage();\n  await page.goto('https://v8.dev/blog/10-years');\n\n  await page.emulateVisionDeficiency('achromatopsia');\n  await page.screenshot({path: 'achromatopsia.png'});\n\n  await page.emulateVisionDeficiency('deuteranopia');\n  await page.screenshot({path: 'deuteranopia.png'});\n\n  await page.emulateVisionDeficiency('blurredVision');\n  await page.screenshot({path: 'blurred-vision.png'});\n\n  await browser.close();\n})();\n")))}s.isMDXComponent=!0}}]);