puppeteer/assets/js/8d61a3b0.a8e4e1c3.js

/*! For license information please see 8d61a3b0.a8e4e1c3.js.LICENSE.txt */
"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[37431],{69718:(e,n,a)=>{a.r(n),a.d(n,{assets:()=>d,contentTitle:()=>s,default:()=>u,frontMatter:()=>l,metadata:()=>i,toc:()=>c});var t=a(85893),r=a(11151);const l={sidebar_label:"Page.evaluateHandle"},s="Page.evaluateHandle() method",i={id:"api/puppeteer.page.evaluatehandle",title:"Page.evaluateHandle() method",description:"Signature:",source:"@site/../docs/api/puppeteer.page.evaluatehandle.md",sourceDirName:"api",slug:"/api/puppeteer.page.evaluatehandle",permalink:"/next/api/puppeteer.page.evaluatehandle",draft:!1,unlisted:!1,tags:[],version:"current",frontMatter:{sidebar_label:"Page.evaluateHandle"},sidebar:"api",previous:{title:"Page.evaluate",permalink:"/next/api/puppeteer.page.evaluate"},next:{title:"Page.evaluateOnNewDocument",permalink:"/next/api/puppeteer.page.evaluateonnewdocument"}},d={},c=[{value:"Signature:",id:"signature",level:4},{value:"Parameters",id:"parameters",level:2},{value:"Remarks",id:"remarks",level:2},{value:"Example 1",id:"example-1",level:2},{value:"Example 2",id:"example-2",level:2},{value:"Example 3",id:"example-3",level:2}];function o(e){const n={a:"a",code:"code",h1:"h1",h2:"h2",h4:"h4",p:"p",pre:"pre",strong:"strong",table:"table",tbody:"tbody",td:"td",th:"th",thead:"thead",tr:"tr",...(0,r.a)(),...e.components};return(0,t.jsxs)(t.Fragment,{children:[(0,t.jsx)(n.h1,{id:"pageevaluatehandle-method",children:"Page.evaluateHandle() method"}),"\n",(0,t.jsx)(n.h4,{id:"signature",children:"Signature:"}),"\n",(0,t.jsx)(n.pre,{children:(0,t.jsx)(n.code,{className:"language-typescript",children:"class Page {\n  evaluateHandle<\n    Params extends unknown[],\n    Func extends EvaluateFunc<Params> = EvaluateFunc<Params>,\n  >(\n    pageFunction: Func | string,\n    ...args: Params\n  ): Promise<HandleFor<Awaited<ReturnType<Func>>>>;\n}\n"})}),"\n",(0,t.jsx)(n.h2,{id:"parameters",children:"Parameters"}),"\n",(0,t.jsxs)(n.table,{children:[(0,t.jsx)(n.thead,{children:(0,t.jsxs)(n.tr,{children:[(0,t.jsx)(n.th,{children:"Parameter"}),(0,t.jsx)(n.th,{children:"Type"}),(0,t.jsx)(n.th,{children:"Description"})]})}),(0,t.jsxs)(n.tbody,{children:[(0,t.jsxs)(n.tr,{children:[(0,t.jsx)(n.td,{children:"pageFunction"}),(0,t.jsx)(n.td,{children:"Func | string"}),(0,t.jsx)(n.td,{children:"a function that is run within the page"})]}),(0,t.jsxs)(n.tr,{children:[(0,t.jsx)(n.td,{children:"args"}),(0,t.jsx)(n.td,{children:"Params"}),(0,t.jsx)(n.td,{children:"arguments to be passed to the pageFunction"})]})]})]}),"\n",(0,t.jsx)(n.p,{children:(0,t.jsx)(n.strong,{children:"Returns:"})}),"\n",(0,t.jsxs)(n.p,{children:["Promise<",(0,t.jsx)(n.a,{href:"/next/api/puppeteer.handlefor",children:"HandleFor"}),"<Awaited<ReturnType<Func>>>>"]}),"\n",(0,t.jsx)(n.h2,{id:"remarks",children:"Remarks"}),"\n",(0,t.jsxs)(n.p,{children:["The only difference between ",(0,t.jsx)(n.a,{href:"/next/api/puppeteer.page.evaluate",children:"page.evaluate"})," and ",(0,t.jsx)(n.code,{children:"page.evaluateHandle"})," is that ",(0,t.jsx)(n.code,{children:"evaluateHandle"})," will return the value wrapped in an in-page object."]}),"\n",(0,t.jsxs)(n.p,{children:["If the function passed to ",(0,t.jsx)(n.code,{children:"page.evaluateHandle"})," returns a Promise, the function will wait for the promise to resolve and return its value."]}),"\n",(0,t.jsx)(n.p,{children:"You can pass a string instead of a function (although functions are recommended as they are easier to debug and use with TypeScript):"}),"\n",(0,t.jsx)(n.h2,{id:"example-1",children:"Example 1"}),"\n",(0,t.jsx)(n.pre,{children:(0,t.jsx)(n.code,{className:"language-ts",children:"const aHandle = await page.evaluateHandle('document');\n"})}),"\n",(0,t.jsx)(n.h2,{id:"example-2",children:"Example 2"}),"\n",(0,t.jsxs)(n.p,{children:[(0,t.jsx)(n.a,{href:"/next/api/puppeteer.jshandle",children:"JSHandle"})," instances can be passed as arguments to the ",(0,t.jsx)(n.code,{children:"pageFunction"}),":"]}),"\n",(0,t.jsx)(n.pre,{children:(0,t.jsx)(n.code,{className:"language-ts",children:"const aHandle = await page.evaluateHandle((