puppeteer/assets/js/a2b2c72d.1b772047.js

"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[10853],{3905:(e,t,r)=>{r.d(t,{Zo:()=>u,kt:()=>d});var n=r(67294);function a(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}function l(e,t){var r=Object.keys(e);if(Object.getOwnPropertySymbols){var n=Object.getOwnPropertySymbols(e);t&&(n=n.filter((function(t){return Object.getOwnPropertyDescriptor(e,t).enumerable}))),r.push.apply(r,n)}return r}function o(e){for(var t=1;t<arguments.length;t++){var r=null!=arguments[t]?arguments[t]:{};t%2?l(Object(r),!0).forEach((function(t){a(e,t,r[t])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(r)):l(Object(r)).forEach((function(t){Object.defineProperty(e,t,Object.getOwnPropertyDescriptor(r,t))}))}return e}function i(e,t){if(null==e)return{};var r,n,a=function(e,t){if(null==e)return{};var r,n,a={},l=Object.keys(e);for(n=0;n<l.length;n++)r=l[n],t.indexOf(r)>=0||(a[r]=e[r]);return a}(e,t);if(Object.getOwnPropertySymbols){var l=Object.getOwnPropertySymbols(e);for(n=0;n<l.length;n++)r=l[n],t.indexOf(r)>=0||Object.prototype.propertyIsEnumerable.call(e,r)&&(a[r]=e[r])}return a}var p=n.createContext({}),s=function(e){var t=n.useContext(p),r=t;return e&&(r="function"==typeof e?e(t):o(o({},t),e)),r},u=function(e){var t=s(e.components);return n.createElement(p.Provider,{value:t},e.children)},m={inlineCode:"code",wrapper:function(e){var t=e.children;return n.createElement(n.Fragment,{},t)}},c=n.forwardRef((function(e,t){var r=e.components,a=e.mdxType,l=e.originalType,p=e.parentName,u=i(e,["components","mdxType","originalType","parentName"]),c=s(r),d=a,f=c["".concat(p,".").concat(d)]||c[d]||m[d]||l;return r?n.createElement(f,o(o({ref:t},u),{},{components:r})):n.createElement(f,o({ref:t},u))}));function d(e,t){var r=arguments,a=t&&t.mdxType;if("string"==typeof e||a){var l=r.length,o=new Array(l);o[0]=c;var i={};for(var p in t)hasOwnProperty.call(t,p)&&(i[p]=t[p]);i.originalType=e,i.mdxType="string"==typeof e?e:a,o[1]=i;for(var s=2;s<l;s++)o[s]=r[s];return n.createElement.apply(null,o)}return n.createElement.apply(null,r)}c.displayName="MDXCreateElement"},48373:(e,t,r)=>{r.r(t),r.d(t,{assets:()=>p,contentTitle:()=>o,default:()=>m,frontMatter:()=>l,metadata:()=>i,toc:()=>s});var n=r(87462),a=(r(67294),r(3905));const l={sidebar_label:"Frame.$$eval"},o="Frame.$$eval() method",i={unversionedId:"api/puppeteer.frame.__eval",id:"version-17.0.0/api/puppeteer.frame.__eval",title:"Frame.$$eval() method",description:"Runs the given function on an array of elements matching the given selector in the frame.",source:"@site/versioned_docs/version-17.0.0/api/puppeteer.frame.__eval.md",sourceDirName:"api",slug:"/api/puppeteer.frame.__eval",permalink:"/api/puppeteer.frame.__eval",draft:!1,tags:[],version:"17.0.0",frontMatter:{sidebar_label:"Frame.$$eval"},sidebar:"sidebar",previous:{title:"Frame.$$",permalink:"/api/puppeteer.frame.__"},next:{title:"Frame.$eval",permalink:"/api/puppeteer.frame._eval"}},p={},s=[{value:"Parameters",id:"parameters",level:2},{value:"Example",id:"example",level:2}],u={toc:s};function m(e){let{components:t,...r}=e;return(0,a.kt)("wrapper",(0,n.Z)({},u,r,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h1",{id:"frameeval-method"},"Frame.$$eval() method"),(0,a.kt)("p",null,"Runs the given function on an array of elements matching the given selector in the frame."),(0,a.kt)("p",null,"If the given function returns a promise, then this method will wait till the promise resolves."),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Signature:")),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-typescript"},"class Frame {\n  $$eval<\n    Selector extends string,\n    Params extends unknown[],\n    Func extends EvaluateFunc<\n      [Array<NodeFor<Selector>>, ...Params]\n    > = EvaluateFunc<[Array<NodeFor<Selector>>, ...Params]>\n  >(\n    selector: Selector,\n    pageFunction: Func | string,\n    ...args: Params\n  ): Promise<Awaited<ReturnType<Func>>>;\n}\n")),(0,a.kt)("h2",{id:"parameters"},"Parameters"),(0,a.kt)("table",null,(0,a.kt)("thead",{parentName:"table"},(0,a.kt)("tr",{parentName:"thead"},(0,a.kt)("th",{parentName:"tr",align:null},"Parameter"),(0,a.kt)("th",{parentName:"tr",align:null},"Type"),(0,a.kt)("th",{parentName:"tr",align:null},"Description"))),(0,a.kt)("tbody",{parentName:"table"},(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",{parentName:"tr",align:null},"selector"),(0,a.kt)("td",{parentName:"tr",align:null},"Selector"),(0,a.kt)("td",{parentName:"tr",align:null},"The selector to query for.")),(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",{parentName:"tr",align:null},"pageFunction"),(0,a.kt)("td",{parentName:"tr",align:null},"Func ","|"," string"),(0,a.kt)("td",{parentName:"tr",align:null},"The function to be evaluated in the frame's context. An array of elements matching the given selector will be passed to the function as its first argument.")),(0,a.kt)("tr",{parentName:"tbody"},(0,a.kt)("td",{parentName:"tr",align:null},"args"),(0,a.kt)("td",{parentName:"tr",align:null},"Params"),(0,a.kt)("td",{parentName:"tr",align:null},"Additional arguments to pass to ",(0,a.kt)("code",null,"pageFunction"),".")))),(0,a.kt)("p",null,(0,a.kt)("strong",{parentName:"p"},"Returns:")),(0,a.kt)("p",null,"Promise","<","Awaited","<","ReturnType","<","Func",">",">",">"),(0,a.kt)("p",null,"A promise to the result of the function."),(0,a.kt)("h2",{id:"example"},"Example"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-js"},"const divsCounts = await frame.$$eval('div', divs => divs.length);\n")))}m.isMDXComponent=!0}}]);