puppeteer/assets/js/d27db2d3.4b4cac33.js

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o=n.length,l=new Array(o);l[0]=m;var i={};for(var p in t)hasOwnProperty.call(t,p)&&(i[p]=t[p]);i.originalType=e,i.mdxType="string"==typeof e?e:r,l[1]=i;for(var u=2;u<o;u++)l[u]=n[u];return a.createElement.apply(null,l)}return a.createElement.apply(null,n)}m.displayName="MDXCreateElement"},17831:(e,t,n)=>{n.r(t),n.d(t,{assets:()=>p,contentTitle:()=>l,default:()=>c,frontMatter:()=>o,metadata:()=>i,toc:()=>u});var a=n(87462),r=(n(67294),n(3905));const o={},l="ExecutionContext.evaluate() method",i={unversionedId:"api/puppeteer.executioncontext.evaluate",id:"api/puppeteer.executioncontext.evaluate",title:"ExecutionContext.evaluate() method",description:"Signature:",source:"@site/../docs/api/puppeteer.executioncontext.evaluate.md",sourceDirName:"api",slug:"/api/puppeteer.executioncontext.evaluate",permalink:"/puppeteer/api/puppeteer.executioncontext.evaluate",draft:!1,tags:[],version:"current",frontMatter:{},sidebar:"sidebar",previous:{title:"ExecutionContext class",permalink:"/puppeteer/api/puppeteer.executioncontext"},next:{title:"ExecutionContext.evaluateHandle() method",permalink:"/puppeteer/api/puppeteer.executioncontext.evaluatehandle"}},p={},u=[{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}],s={toc:u};function c(e){let{components:t,...n}=e;return(0,r.kt)("wrapper",(0,a.Z)({},s,n,{components:t,mdxType:"MDXLayout"}),(0,r.kt)("h1",{id:"executioncontextevaluate-method"},"ExecutionContext.evaluate() method"),(0,r.kt)("p",null,(0,r.kt)("strong",{parentName:"p"},"Signature:")),(0,r.kt)("pre",null,(0,r.kt)("code",{parentName:"pre",className:"language-typescript"},"evaluate<Params extends unknown[], Func extends EvaluateFunc<Params> = EvaluateFunc<Params>>(pageFunction: Func | string, ...args: Params): 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function")))),(0,r.kt)("p",null,(0,r.kt)("strong",{parentName:"p"},"Returns:")),(0,r.kt)("p",null,"Promise","<","Awaited","<","ReturnType","<","Func",">",">",">"),(0,r.kt)("p",null,"A promise that resolves to the return value of the given function."),(0,r.kt)("h2",{id:"remarks"},"Remarks"),(0,r.kt)("p",null,"If the function passed to the ",(0,r.kt)("inlineCode",{parentName:"p"},"executionContext.evaluate")," returns a Promise, then ",(0,r.kt)("inlineCode",{parentName:"p"},"executionContext.evaluate")," would wait for the promise to resolve and return its value. If the function passed to the ",(0,r.kt)("inlineCode",{parentName:"p"},"executionContext.evaluate")," returns a non-serializable value, then ",(0,r.kt)("inlineCode",{parentName:"p"},"executionContext.evaluate")," resolves to ",(0,r.kt)("inlineCode",{parentName:"p"},"undefined"),". 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