"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[55545],{3905:(e,t,a)=>{a.d(t,{Zo:()=>u,kt:()=>k});var n=a(67294);function r(e,t,a){return t in e?Object.defineProperty(e,t,{value:a,enumerable:!0,configurable:!0,writable:!0}):e[t]=a,e}function l(e,t){var a=Object.keys(e);if(Object.getOwnPropertySymbols){var n=Object.getOwnPropertySymbols(e);t&&(n=n.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),a.push.apply(a,n)}return a}function p(e){for(var t=1;t<arguments.length;t++){var a=null!=arguments[t]?arguments[t]:{};t%2?l(Object(a),!0).forEach((function(t){r(e,t,a[t])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(a)):l(Object(a)).forEach((function(t){Object.defineProperty(e,t,Object.getOwnPropertyDescriptor(a,t))}))}return e}function i(e,t){if(null==e)return{};var a,n,r=function(e,t){if(null==e)return{};var a,n,r={},l=Object.keys(e);for(n=0;n<l.length;n++)a=l[n],t.indexOf(a)>=0||(r[a]=e[a]);return r}(e,t);if(Object.getOwnPropertySymbols){var l=Object.getOwnPropertySymbols(e);for(n=0;n<l.length;n++)a=l[n],t.indexOf(a)>=0||Object.prototype.propertyIsEnumerable.call(e,a)&&(r[a]=e[a])}return r}var o=n.createContext({}),d=function(e){var t=n.useContext(o),a=t;return e&&(a="function"==typeof e?e(t):p(p({},t),e)),a},u=function(e){var t=d(e.components);return n.createElement(o.Provider,{value:t},e.children)},s={inlineCode:"code",wrapper:function(e){var t=e.children;return n.createElement(n.Fragment,{},t)}},m=n.forwardRef((function(e,t){var a=e.components,r=e.mdxType,l=e.originalType,o=e.parentName,u=i(e,["components","mdxType","originalType","parentName"]),m=d(a),k=r,g=m["".concat(o,".").concat(k)]||m[k]||s[k]||l;return a?n.createElement(g,p(p({ref:t},u),{},{components:a})):n.createElement(g,p({ref:t},u))}));function k(e,t){var a=arguments,r=t&&t.mdxType;if("string"==typeof e||r){var l=a.length,p=new Array(l);p[0]=m;var i={};for(var o in t)hasOwnProperty.call(t,o)&&(i[o]=t[o]);i.originalType=e,i.mdxType="string"==typeof e?e:r,p[1]=i;for(var d=2;d<l;d++)p[d]=a[d];return n.createElement.apply(null,p)}return n.createElement.apply(null,a)}m.displayName="MDXCreateElement"},33793:(e,t,a)=>{a.r(t),a.d(t,{assets:()=>d,contentTitle:()=>i,default:()=>m,frontMatter:()=>p,metadata:()=>o,toc:()=>u});a(67294);var n=a(3905);function r(){return r=Object.assign||function(e){for(var t=1;t<arguments.length;t++){var a=arguments[t];for(var n in a)Object.prototype.hasOwnProperty.call(a,n)&&(e[n]=a[n])}return e},r.apply(this,arguments)}function l(e,t){if(null==e)return{};var a,n,r=function(e,t){if(null==e)return{};var a,n,r={},l=Object.keys(e);for(n=0;n<l.length;n++)a=l[n],t.indexOf(a)>=0||(r[a]=e[a]);return r}(e,t);if(Object.getOwnPropertySymbols){var l=Object.getOwnPropertySymbols(e);for(n=0;n<l.length;n++)a=l[n],t.indexOf(a)>=0||Object.prototype.propertyIsEnumerable.call(e,a)&&(r[a]=e[a])}return r}const p={sidebar_label:"Page"},i="Page class",o={unversionedId:"api/puppeteer.page",id:"version-21.3.3/api/puppeteer.page",title:"Page class",description:"Page provides methods to interact with a single tab or extension background page in the browser.",source:"@site/versioned_docs/version-21.3.3/api/puppeteer.page.md",sourceDirName:"api",slug:"/api/puppeteer.page",permalink:"/api/puppeteer.page",draft:!1,tags:[],version:"21.3.3",frontMatter:{sidebar_label:"Page"},sidebar:"api",previous:{title:"BrowserContext.waitForTarget",permalink:"/api/puppeteer.browsercontext.waitfortarget"},next:{title:"Page.$",permalink:"/api/puppeteer.page._"}},d={},u=[{value:"Signature:",id:"signature",level:4},{value:"Remarks",id:"remarks",level:2},{value:"Example 1",id:"example-1",level:2},{value:"Example 2",id:"example-2",level:2},{value:"Properties",id:"properties",level:2},{value:"Methods",id:"methods",level:2}],s={toc:u};function m(e){var{components:t}=e,a=l(e,["components"]);return(0,n.kt)("wrapper",r({},s,a,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h1",r({},{id:"page-class"}),"Page class"),(0,n.kt)("p",null,"Page provides methods to interact with a single tab or ",(0,n.kt)("a",r({parentName:"p"},{href:"https://developer.chrome.com/extensions/background_pages"}),"extension background page")," in the browser."),(0,n.kt)("admonition",r({},{type:"note"}),(0,n.kt)("p",{parentName:"admonition"},"One Browser instance might have multiple Page instances.")),(0,n.kt)("h4",r({},{id:"signature"}),"Signature:"),(0,n.kt)("pre",null,(0,n.kt)("code",r({parentName:"pre"},{className:"language-typescript"}),"export declare abstract class Page extends EventEmitter<PageEvents>\n")),(0,n.kt)("p",null,(0,n.kt)("strong",{parentName:"p"},"Extends:")," ",(0,n.kt)("a",r({parentName:"p"},{href:"/api/puppeteer.eventemitter"}),"EventEmitter"),"<",(0,n.kt)("a",r({parentName:"p"},{href:"/api/puppeteer.pageevents"}),"PageEvents"),">"),(0,n.kt)("h2",r({},{id:"remarks"}),"Remarks"),(0,n.kt)("p",null,"The constructor for this class is marked as internal. Third-party code should not call the constructor directly or create subclasses that extend the ",(0,n.kt)("inlineCode",{parentName:"p"},"Page")," class."),(0,n.kt)("h2",r({},{id:"example-1"}),"Example 1"),(0,n.kt)("p",null,"This example creates a page, navigates it to a URL, and then saves a screenshot:"),(0,n.kt)("pre",null,(0,n.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://example.com');\n  await page.screenshot({path: 'screenshot.png'});\n  await browser.close();\n})();\n")),(0,n.kt)("p",null,"The Page class extends from Puppeteer's ",(0,n.kt)("a",r({parentName:"p"},{href:"/api/puppeteer.eventemitter"}),"EventEmitter")," class and will emit various events which are documented in the ",(0,n.kt)("a",r({parentName:"p"},{href:"/api/puppeteer.pageevent"}),"PageEvent")," enum."),(0,n.kt)("h2",r({},{id:"example-2"}),"Example 2"),(0,n.kt)("p",null,"This example logs a message for a single page ",(0,n.kt)("inlineCode",{parentName:"p"},"load")," event:"),(0,n.kt)("pre",null,(0,n.kt)("code",r({parentName:"pre"},{className:"language-ts"}),"page.once('load', () => console.log('Page loaded!'));\n")),(0,n.kt)("p",null,"To unsubscribe from events use the ",(0,n.kt)("a",r({parentName:"p"},{href:"/api/puppeteer.eventemitter.off"}),"EventEmitter.off()")," method:"),(0,n.kt)("pre",null,(0,n.kt)("code",r({parentName:"pre"},{className:"language-ts"}),"function logRequest(interceptedRequest) {\n  console.log('A request was made:', interceptedRequest.url());\n}\npage.on('request', logRequest);\n// Sometime later...\npage.off('request', logRequest);\n")),(0,n.kt)("h2",r({},{id:"properties"}),"Properties"),(0,n.kt)("table",null,(0,n.kt)("thead",{parentName:"table"},(0,n.kt)("tr",{parentName:"thead"},(0,n.kt)("th",r({parentName:"tr"},{align:null}),"Property"),(0,n.kt)("th",r({parentName:"tr"},{align:null}),"Modifiers"),(0,n.kt)("th",r({parentName:"tr"},{align:null}),"Type"),(0,n.kt)("th",r({parentName:"tr"},{align:null}),"Description"))),(0,n.kt)("tbody",{parentName:"table"},(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),"accessibility"),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("code",null,"readonly")),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.accessibility"}),"Accessibility")),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"The Accessibility class provides methods for inspecting the browser's accessibility tree. 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If no element matches the selector, the return value resolves to ",(0,n.kt)("code",null,"null"),".")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.__"}),"$$(selector)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"The method runs ",(0,n.kt)("code",null,"document.querySelectorAll")," within the page. 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If URLs are specified, only cookies for those URLs are returned.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.createcdpsession"}),"createCDPSession()")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"Creates a Chrome Devtools Protocol session attached to the page.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.createpdfstream"}),"createPDFStream(options)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"Generates a PDF of the page with the ",(0,n.kt)("code",null,"print")," CSS media type.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.deletecookie"}),"deleteCookie(cookies)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulate"}),"emulate(device)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("p",null,"Emulates a given device's metrics and user agent."),(0,n.kt)("p",null,"To aid emulation, Puppeteer provides a list of known devices that can be via ",(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.knowndevices"}),"KnownDevices"),"."))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatecputhrottling"}),"emulateCPUThrottling(factor)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"Enables CPU throttling to emulate slow CPUs.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulateidlestate"}),"emulateIdleState(overrides)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"Emulates the idle state. If no arguments set, clears idle state emulation.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatemediafeatures"}),"emulateMediaFeatures(features)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatemediatype"}),"emulateMediaType(type)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatenetworkconditions"}),"emulateNetworkConditions(networkConditions)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("p",null,"This does not affect WebSockets and WebRTC PeerConnections (see ",(0,n.kt)("a",r({parentName:"td"},{href:"https://crbug.com/563644"}),"https://crbug.com/563644"),"). To set the page offline, you can use ",(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.setofflinemode"}),"Page.setOfflineMode()"),"."),(0,n.kt)("p",null,"A list of predefined network conditions can be used by importing ",(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.predefinednetworkconditions"}),"PredefinedNetworkConditions"),"."))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatetimezone"}),"emulateTimezone(timezoneId)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.emulatevisiondeficiency"}),"emulateVisionDeficiency(type)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),"Simulates the given vision deficiency on the page.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.evaluate"}),"evaluate(pageFunction, args)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("p",null,"Evaluates a function in the page's context and returns the result."),(0,n.kt)("p",null,"If the function passed to ",(0,n.kt)("code",null,"page.evaluate")," returns a Promise, the function will wait for the promise to resolve and return its value."))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.evaluatehandle"}),"evaluateHandle(pageFunction, args)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}))),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("a",r({parentName:"td"},{href:"/api/puppeteer.page.evaluateonnewdocument"}),"evaluateOnNewDocument(pageFunction, args)")),(0,n.kt)("td",r({parentName:"tr"},{align:null})),(0,n.kt)("td",r({parentName:"tr"},{align:null}),(0,n.kt)("p",null,"Adds a function which would be invoked in one of the following scenarios:"),(0,n.kt)("p",null,"- whenever the page is navigated"),(0,n.kt)("p",null,"- whenever the child frame is attached or navigated. 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