puppeteer/assets/js/80e32de4.4e012f5f.js

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If at the moment of calling the method the ",(0,o.kt)("inlineCode",{parentName:"p"},"selector")," already exists, the method will return immediately. If the ",(0,o.kt)("inlineCode",{parentName:"p"},"selector")," doesn't appear after the ",(0,o.kt)("inlineCode",{parentName:"p"},"timeout")," milliseconds of waiting, the function will throw."),(0,o.kt)("p",null,"This method works across navigations:"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre",className:"language-js"},"const puppeteer = require('puppeteer');\n(async () => {\nconst browser = await puppeteer.launch();\nconst page = await browser.newPage();\nlet currentURL;\npage\n.waitForSelector('img')\n.then(() => console.log('First URL with image: ' + currentURL));\nfor (currentURL of [\n'https://example.com',\n'https://google.com',\n'https://bbc.com',\n]) {\nawait page.goto(currentURL);\n}\nawait browser.close();\n})();\n")),(0,o.kt)("b",null,"Signature:"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre",className:"language-typescript"},"waitForSelector(selector: string, options?: {\n        visible?: boolean;\n        hidden?: boolean;\n        timeout?: number;\n    }): Promise<ElementHandle | null>;\n")),(0,o.kt)("h2",{id:"parameters"},"Parameters"),(0,o.kt)("table",null,(0,o.kt)("thead",{parentName:"table"},(0,o.kt)("tr",{parentName:"thead"},(0,o.kt)("th",{parentName:"tr",align:null},"Parameter"),(0,o.kt)("th",{parentName:"tr",align:null},"Type"),(0,o.kt)("th",{parentName:"tr",align:null},"Description"))),(0,o.kt)("tbody",{parentName:"table"},(0,o.kt)("tr",{parentName:"tbody"},(0,o.kt)("td",{parentName:"tr",align:null},"selector"),(0,o.kt)("td",{parentName:"tr",align:null},"string"),(0,o.kt)("td",{parentName:"tr",align:null},"A ",(0,o.kt)("a",{parentName:"td",href:"https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Selectors"},"selector")," of an element to wait for")),(0,o.kt)("tr",{parentName:"tbody"},(0,o.kt)("td",{parentName:"tr",align:null},"options"),(0,o.kt)("td",{parentName:"tr",align:null},"{ visible?: boolean; hidden?: boolean; timeout?: number; }"),(0,o.kt)("td",{parentName:"tr",align:null},"Optional waiting parameters")))),(0,o.kt)("b",null,"Returns:"),(0,o.kt)("p",null,"Promise","<",(0,o.kt)("a",{parentName:"p",href:"/puppeteer/docs/next/puppeteer.elementhandle"},"ElementHandle")," ","|"," null",">"),(0,o.kt)("p",null,"Promise which resolves when element specified by selector string is added to DOM. 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Defaults to ",(0,o.kt)("inlineCode",{parentName:"p"},"false"),".")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("inlineCode",{parentName:"p"},"hidden"),": ait for element to not be found in the DOM or to be hidden, i.e. have ",(0,o.kt)("inlineCode",{parentName:"p"},"display: none")," or ",(0,o.kt)("inlineCode",{parentName:"p"},"visibility: hidden")," CSS properties. Defaults to ",(0,o.kt)("inlineCode",{parentName:"p"},"false"),".")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("inlineCode",{parentName:"p"},"timeout"),": maximum time to wait for in milliseconds. Defaults to ",(0,o.kt)("inlineCode",{parentName:"p"},"30000")," (30 seconds). Pass ",(0,o.kt)("inlineCode",{parentName:"p"},"0")," to disable timeout. The default value can be changed by using the ",(0,o.kt)("a",{parentName:"p",href:"/puppeteer/docs/next/puppeteer.page.setdefaulttimeout"},"Page.setDefaultTimeout()")," method."))))}m.isMDXComponent=!0}}]);