puppeteer/assets/js/4105ee0d.f84afc0a.js

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Puppeteer.connect().",source:"@site/versioned_docs/version-21.0.2/api/puppeteer.browser.md",sourceDirName:"api",slug:"/api/puppeteer.browser",permalink:"/api/puppeteer.browser",draft:!1,tags:[],version:"21.0.2",frontMatter:{sidebar_label:"Browser"},sidebar:"api",previous:{title:"Puppeteer.unregisterCustomQueryHandler",permalink:"/api/puppeteer.puppeteer.unregistercustomqueryhandler"},next:{title:"Browser.browserContexts",permalink:"/api/puppeteer.browser.browsercontexts"}},i={},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:"Methods",id:"methods",level:2}],c={toc:u};function d(e){var{components:t}=e,r=p(e,["components"]);return(0,n.kt)("wrapper",a({},c,r,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h1",a({},{id:"browser-class"}),"Browser class"),(0,n.kt)("p",null,"A Browser is created when Puppeteer connects to a browser instance, either through ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.puppeteernode.launch"}),"PuppeteerNode.launch()")," or ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.puppeteer.connect"}),"Puppeteer.connect()"),"."),(0,n.kt)("h4",a({},{id:"signature"}),"Signature:"),(0,n.kt)("pre",null,(0,n.kt)("code",a({parentName:"pre"},{className:"language-typescript"}),"export declare class Browser extends EventEmitter\n")),(0,n.kt)("p",null,(0,n.kt)("strong",{parentName:"p"},"Extends:")," ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.eventemitter"}),"EventEmitter")),(0,n.kt)("h2",a({},{id:"remarks"}),"Remarks"),(0,n.kt)("p",null,"The Browser class extends from Puppeteer's ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.eventemitter"}),"EventEmitter")," class and will emit various events which are documented in the ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.browseremittedevents"}),"BrowserEmittedEvents")," enum."),(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"},"Browser")," class."),(0,n.kt)("h2",a({},{id:"example-1"}),"Example 1"),(0,n.kt)("p",null,"An example of using a ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.browser"}),"Browser")," to create a ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.page"}),"Page"),":"),(0,n.kt)("pre",null,(0,n.kt)("code",a({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 browser.close();\n})();\n")),(0,n.kt)("h2",a({},{id:"example-2"}),"Example 2"),(0,n.kt)("p",null,"An example of disconnecting from and reconnecting to a ",(0,n.kt)("a",a({parentName:"p"},{href:"/api/puppeteer.browser"}),"Browser"),":"),(0,n.kt)("pre",null,(0,n.kt)("code",a({parentName:"pre"},{className:"language-ts"}),"import puppeteer from 'puppeteer';\n\n(async () => {\n  const browser = await puppeteer.launch();\n  // Store the endpoint to be able to reconnect to the browser.\n  const browserWSEndpoint = browser.wsEndpoint();\n  // Disconnect puppeteer from the browser.\n  browser.disconnect();\n\n  // Use the endpoint to reestablish a connection\n  const browser2 = await puppeteer.connect({browserWSEndpoint});\n  // Close the browser.\n  await browser2.close();\n})();\n")),(0,n.kt)("h2",a({},{id:"methods"}),"Methods"),(0,n.kt)("table",null,(0,n.kt)("thead",{parentName:"table"},(0,n.kt)("tr",{parentName:"thead"},(0,n.kt)("th",a({parentName:"tr"},{align:null}),"Method"),(0,n.kt)("th",a({parentName:"tr"},{align:null}),"Modifiers"),(0,n.kt)("th",a({parentName:"tr"},{align:null}),"Description"))),(0,n.kt)("tbody",{parentName:"table"},(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.browsercontexts"}),"browserContexts()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Returns an array of all open browser contexts. In a newly created browser, this will return a single instance of ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browsercontext"}),"BrowserContext"),".")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.close"}),"close()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Closes the browser and all of its pages (if any were opened). The ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser"}),"Browser")," object itself is considered to be disposed and cannot be used anymore.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.createincognitobrowsercontext"}),"createIncognitoBrowserContext(options)")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Creates a new incognito browser context. This won't share cookies/cache with other browser contexts.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.defaultbrowsercontext"}),"defaultBrowserContext()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Returns the default browser context. The default browser context cannot be closed.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.disconnect"}),"disconnect()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Disconnects Puppeteer from the browser, but leaves the browser process running. After calling ",(0,n.kt)("code",null,"disconnect"),", the ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser"}),"Browser")," object is considered disposed and cannot be used anymore.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.isconnected"}),"isConnected()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Indicates that the browser is connected.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.newpage"}),"newPage()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Promise which resolves to a new ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.page"}),"Page")," object. The Page is created in a default browser context.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.pages"}),"pages()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"An array of all open pages inside the Browser.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.process"}),"process()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"The spawned browser process. Returns ",(0,n.kt)("code",null,"null")," if the browser instance was created with ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.puppeteer.connect"}),"Puppeteer.connect()"),".")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.target"}),"target()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"The target associated with the browser.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.targets"}),"targets()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"All active targets inside the Browser. In case of multiple browser contexts, returns an array with all the targets in all browser contexts.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.useragent"}),"userAgent()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"The browser's original user agent. Pages can override the browser user agent with ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.page.setuseragent"}),"Page.setUserAgent()"),".")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.version"}),"version()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"A string representing the browser name and version.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.waitfortarget"}),"waitForTarget(predicate, options)")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"Searches for a target in all browser contexts.")),(0,n.kt)("tr",{parentName:"tbody"},(0,n.kt)("td",a({parentName:"tr"},{align:null}),(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.browser.wsendpoint"}),"wsEndpoint()")),(0,n.kt)("td",a({parentName:"tr"},{align:null})),(0,n.kt)("td",a({parentName:"tr"},{align:null}),"The browser websocket endpoint which can be used as an argument to ",(0,n.kt)("a",a({parentName:"td"},{href:"/api/puppeteer.puppeteer.connect"}),"Puppeteer.connect()"),".")))))}d.isMDXComponent=!0}}]);