"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[20238],{3905:(e,t,n)=>{n.d(t,{Zo:()=>u,kt:()=>f});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 o(e){for(var t=1;t=0||(r[n]=e[n]);return r}(e,t);if(Object.getOwnPropertySymbols){var i=Object.getOwnPropertySymbols(e);for(a=0;a=0||Object.prototype.propertyIsEnumerable.call(e,n)&&(r[n]=e[n])}return r}var l=a.createContext({}),c=function(e){var t=a.useContext(l),n=t;return e&&(n="function"==typeof e?e(t):o(o({},t),e)),n},u=function(e){var t=c(e.components);return a.createElement(l.Provider,{value:t},e.children)},s={inlineCode:"code",wrapper:function(e){var t=e.children;return a.createElement(a.Fragment,{},t)}},m=a.forwardRef((function(e,t){var n=e.components,r=e.mdxType,i=e.originalType,l=e.parentName,u=p(e,["components","mdxType","originalType","parentName"]),m=c(n),f=r,y=m["".concat(l,".").concat(f)]||m[f]||s[f]||i;return n?a.createElement(y,o(o({ref:t},u),{},{components:n})):a.createElement(y,o({ref:t},u))}));function f(e,t){var n=arguments,r=t&&t.mdxType;if("string"==typeof e||r){var i=n.length,o=new Array(i);o[0]=m;var p={};for(var l in t)hasOwnProperty.call(t,l)&&(p[l]=t[l]);p.originalType=e,p.mdxType="string"==typeof e?e:r,o[1]=p;for(var c=2;c{n.r(t),n.d(t,{assets:()=>c,contentTitle:()=>p,default:()=>m,frontMatter:()=>o,metadata:()=>l,toc:()=>u});n(67294);var a=n(3905);function r(){return r=Object.assign||function(e){for(var t=1;t=0||(r[n]=e[n]);return r}(e,t);if(Object.getOwnPropertySymbols){var i=Object.getOwnPropertySymbols(e);for(a=0;a=0||Object.prototype.propertyIsEnumerable.call(e,n)&&(r[n]=e[n])}return r}const o={sidebar_label:"Page.emulateVisionDeficiency"},p="Page.emulateVisionDeficiency() method",l={unversionedId:"api/puppeteer.page.emulatevisiondeficiency",id:"api/puppeteer.page.emulatevisiondeficiency",title:"Page.emulateVisionDeficiency() method",description:"Simulates the given vision deficiency on the page.",source:"@site/../docs/api/puppeteer.page.emulatevisiondeficiency.md",sourceDirName:"api",slug:"/api/puppeteer.page.emulatevisiondeficiency",permalink:"/next/api/puppeteer.page.emulatevisiondeficiency",draft:!1,tags:[],version:"current",frontMatter:{sidebar_label:"Page.emulateVisionDeficiency"},sidebar:"api",previous:{title:"Page.emulateTimezone",permalink:"/next/api/puppeteer.page.emulatetimezone"},next:{title:"Page.evaluate",permalink:"/next/api/puppeteer.page.evaluate"}},c={},u=[{value:"Signature:",id:"signature",level:4},{value:"Parameters",id:"parameters",level:2},{value:"Example",id:"example",level:2}],s={toc:u};function m(e){var{components:t}=e,n=i(e,["components"]);return(0,a.kt)("wrapper",r({},s,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h1",r({},{id:"pageemulatevisiondeficiency-method"}),"Page.emulateVisionDeficiency() method"),(0,a.kt)("p",null,"Simulates the given vision deficiency on the page."),(0,a.kt)("h4",r({},{id:"signature"}),"Signature:"),(0,a.kt)("pre",null,(0,a.kt)("code",r({parentName:"pre"},{className:"language-typescript"}),"class Page {\n abstract emulateVisionDeficiency(\n type?: Protocol.Emulation.SetEmulatedVisionDeficiencyRequest['type']\n ): Promise;\n}\n")),(0,a.kt)("h2",r({},{id:"parameters"}),"Parameters"),(0,a.kt)("table",null,(0,a.kt)("thead",{parentName:"table"},(0,a.kt)("tr",{parentName:"thead"},(0,a.kt)("th",r({parentName:"tr"},{align:null}),"Parameter"),(0,a.kt)("th",r({parentName:"tr"},{align:null}),"Type"),(0,a.kt)("th",r({parentName:"tr"},{align:null}),"Description"))),(0,a.kt)("tbody",{parentName:"table"},(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",r({parentName:"tr"},{align:null}),"type"),(0,a.kt)("td",r({parentName:"tr"},{align:null}),"Protocol.Emulation.SetEmulatedVisionDeficiencyRequest","[","'type'","]"),(0,a.kt)("td",r({parentName:"tr"},{align:null}),(0,a.kt)("em",{parentName:"td"},"(Optional)")," the type of deficiency to simulate, or ",(0,a.kt)("code",null,"'none'")," to reset.")))),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Returns:")),(0,a.kt)("p",null,"Promise","<","void",">"),(0,a.kt)("h2",r({},{id:"example"}),"Example"),(0,a.kt)("pre",null,(0,a.kt)("code",r({parentName:"pre"},{className:"language-ts"}),"import puppeteer from '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")))}m.isMDXComponent=!0}}]);