"use strict";(self.webpackChunkwebsite=self.webpackChunkwebsite||[]).push([[4291],{3905:(e,t,n)=>{n.d(t,{Zo:()=>c,kt:()=>d});varr=n(67294);functiona(e,t,n){returntine?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}functionp(e,t){varn=Object.keys(e);if(Object.getOwnPropertySymbols){varr=Object.getOwnPropertySymbols(e);t&&(r=r.filter((function(t){returnObject.getOwnPropertyDescriptor(e,t).enumerable}))),n.push.apply(n,r)}returnn}functiono(e){for(vart=1;t<arguments.length;t++){varn=null!=arguments[t]?arguments[t]:{};t%2?p(Object(n),!0).forEach((function(t){a(e,t,n[t])})):Object.getOwnPropertyDescriptors?Object.defineProperties(e,Object.getOwnPropertyDescriptors(n)):p(Object(n)).forEach((function(t){Object.defineProperty(e,t,Object.getOwnPropertyDescriptor(n,t))}))}returne}functioni(e,t){if(null==e)return{};varn,r,a=function(e,t){if(null==e)return{};varn,r,a={},p=Object.keys(e);for(r=0;r<p.length;r++)n=p[r],t.indexOf(n)>=0||(a[n]=e[n]);returna}(e,t);if(Object.getOwnPropertySymbols){varp=Object.getOwnPropertySymbols(e);for(r=0;r<p.length;r++)n=p[r],t.indexOf(n)>=0||Object.prototype.propertyIsEnumerable.call(e,n)&&(a[n]=e[n])}returna}varl=r.createContext({}),u=function(e){vart=r.useContext(l),n=t;returne&&(n="function"==typeofe?e(t):o(o({},t),e)),n},c=function(e){vart=u(e.components);returnr.createElement(l.Provider,{value:t},e.children)},m={inlineCode:"code",wrapper:function(e){vart=e.children;returnr.createElement(r.Fragment,{},t)}},s=r.forwardRef((function(e,t){varn=e.components,a=e.mdxType,p=e.originalType,l=e.parentName,c=i(e,["components","mdxType","originalType","parentName"]),s=u(n),d=a,v=s["".concat(l,".").concat(d)]||s[d]||m[d]||p;returnn?r.createElement(v,o(o({ref:t},c),{},{components:n})):r.createElement(v,o({ref:t},c))}));functiond(e,t){varn=arguments,a=t&&t.mdxType;if("string"==typeofe||a){varp=n.length,o=newArray(p);o[0]=s;vari={};for(varlint)hasOwnProperty.call(t,l)&&(i[l]=t[l]);i.originalType=e,i.mdxType="string"==typeofe?e:a,o[1]=i;for(varu=2;u<p;u++)o[u]=n[u];returnr.createElement.apply(null,o)}returnr.createElement.apply(null,n)}s.displayName="MDXCreateElement"},12469:(e,t,n)=>{n.r(t),n.d(t,{assets:()=>l,contentTitle:()=>o,default:()=>m,frontMatter:()=>p,metadata:()=>i,toc:()=>u});varr=n(87462),a=(n(67294),n(3905));constp={sidebar_label:"EventEmitter.on"},o="EventEmitter.on() method",i={unversionedId:"api/puppeteer.eventemitter.on",id:"version-15.3.1/api/puppeteer.eventemitter.on",title:"EventEmitter.on() method",description:"Bind an event listener to fire when an event occurs.",source:"@site/versioned_docs/version-15.3.1/api/puppeteer.eventemitter.on.md",sourceDirName:"api",slug:"/api/puppeteer.eventemitter.on",permalink:"/api/puppeteer.eventemitter.on",draft:!1,tags:[],version:"15.3.1",frontMatter:{sidebar_label:"EventEmitter.on"},sidebar:"sidebar",previous:{title:"EventEmitter.off",permalink:"/api/puppeteer.eventemitter.off"},next:{title:"EventEmitter.once",permalink:"/api/puppeteer.eventemitter.once"}},l={},u=[{value:"Parameters",id:"parameters",level:2}],c={toc:u};functionm(e){let{components:t,...n}=e;return(0,a.kt)("wrapper",(0,r.Z)({},c,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h1",{id:"eventemitteron-method"},"EventEmitter.on() method"),(0,a.kt)("p",null,"Bind an event listener to fire when an event occurs."),(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 EventEmitter {\n on(event: EventType, handler: Handler): EventEmitter;\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},"event"),(0,a.kt)("td",{parentName:"tr",align
