puppeteer/api/puppeteer.webworker.evaluate/index.html

<!doctype html>
<html lang="en" dir="ltr" class="docs-wrapper docs-doc-page docs-version-19.2.0 plugin-docs plugin-id-default docs-doc-id-api/puppeteer.webworker.evaluate">
<head>
<meta charset="UTF-8">
<meta name="generator" content="Docusaurus v2.1.0">
<title data-rh="true">WebWorker.evaluate() method | Puppeteer</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://pptr.dev/api/puppeteer.webworker.evaluate"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="19.2.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-19.2.0"><meta data-rh="true" name="docsearch:version" content="19.2.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-19.2.0"><meta data-rh="true" property="og:title" content="WebWorker.evaluate() method | Puppeteer"><meta data-rh="true" name="description" content="If the function passed to the worker.evaluate returns a Promise, then worker.evaluate would wait for the promise to resolve and return its value. If the function passed to the worker.evaluate returns a non-serializable value, then worker.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals. Shortcut for await worker.executionContext()).evaluate(pageFunction, ...args)."><meta data-rh="true" property="og:description" content="If the function passed to the worker.evaluate returns a Promise, then worker.evaluate would wait for the promise to resolve and return its value. If the function passed to the worker.evaluate returns a non-serializable value, then worker.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals. Shortcut for await worker.executionContext()).evaluate(pageFunction, ...args)."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://pptr.dev/api/puppeteer.webworker.evaluate"><link data-rh="true" rel="alternate" href="https://pptr.dev/api/puppeteer.webworker.evaluate" hreflang="en"><link data-rh="true" rel="alternate" href="https://pptr.dev/api/puppeteer.webworker.evaluate" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.3247e0f2.css">
<link rel="preload" href="/assets/js/runtime~main.e9134571.js" as="script">
<link rel="preload" href="/assets/js/main.8815833c.js" as="script">
</head>
<body class="navigation-with-keyboard">
<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}()</script><div id="__docusaurus">
<div role="region" aria-label="theme.common.skipToMainContent"><a href="#" class="skipToContent_fXgn">Skip to main content</a></div><nav class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Navigation bar toggle" class="navbar__toggle clean-btn" type="button" tabindex="0"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" alt="Puppeteer Logo" class="themedImage_ToTc themedImage--light_HNdA"><img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" alt="Puppeteer Logo" class="themedImage_ToTc themedImage--dark_i4oU"></div><b class="navbar__title text--truncate">Puppeteer</b></a></div><div class="navbar__items navbar__items--right"><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a class="navbar__link" aria-haspopup="true" aria-expanded="false" role="button" href="/">19.2.0</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/next/api/puppeteer.webworker.evaluate">Next</a></li><li><a aria-current="page" class="dropdown__link dropdown__link--active" href="/api/puppeteer.webworker.evaluate">19.2.0</a></li><li><hr class="dropdown-separator"></li><li class="dropdown-archived-versions"><b>Archived versions</b></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.2/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.2<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.1/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.1<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.0.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.0.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v18.2.1/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">18.2.1<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v18.2.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">18.2.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a
<script src="/assets/js/runtime~main.e9134571.js"></script>
<script src="/assets/js/main.8815833c.js"></script>
</body>
</html>
Deploy website - based on 7c3e51c22cbef937d4d01d32da8463095e0ca015 2022-06-28 11:21:17 +00:00			`<!doctype html>`
deploy: 4ef83e0ee65c770f320ee913458708e17d49ab4a 2022-10-26 08:34:12 +00:00			`<html lang="en" dir="ltr" class="docs-wrapper docs-doc-page docs-version-19.2.0 plugin-docs plugin-id-default docs-doc-id-api/puppeteer.webworker.evaluate">`
Deploy website - based on 7c3e51c22cbef937d4d01d32da8463095e0ca015 2022-06-28 11:21:17 +00:00			`<head>`
			`<meta charset="UTF-8">`
deploy: f07ad2c6616ecd2a959b0c1a65b167ba77611d61 2022-10-24 07:23:07 +00:00			`<meta name="generator" content="Docusaurus v2.1.0">`
deploy: 4ef83e0ee65c770f320ee913458708e17d49ab4a 2022-10-26 08:34:12 +00:00			<title data-rh="true">WebWorker.evaluate() method \| Puppeteer</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://pptr.dev/api/puppeteer.webworker.evaluate"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docusaurus_version" content="19.2.0"><meta data-rh="true" name="docusaurus_tag" content="docs-default-19.2.0"><meta data-rh="true" name="docsearch:version" content="19.2.0"><meta data-rh="true" name="docsearch:docusaurus_tag" content="docs-default-19.2.0"><meta data-rh="true" property="og:title" content="WebWorker.evaluate() method \| Puppeteer"><meta data-rh="true" name="description" content="If the function passed to the worker.evaluate returns a Promise, then worker.evaluate would wait for the promise to resolve and return its value. If the function passed to the worker.evaluate returns a non-serializable value, then worker.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals. Shortcut for await worker.executionContext()).evaluate(pageFunction, ...args)."><meta data-rh="true" property="og:description" content="If the function passed to the worker.evaluate returns a Promise, then worker.evaluate would wait for the promise to resolve and return its value. If the function passed to the worker.evaluate returns a non-serializable value, then worker.evaluate resolves to undefined. DevTools Protocol also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity, and bigint literals. Shortcut for await worker.executionContext()).evaluate(pageFunction, ...args)."><link data-rh="true" rel="icon" href="/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://pptr.dev/api/puppeteer.webworker.evaluate"><link data-rh="true" rel="alternate" href="https://pptr.dev/api/puppeteer.webworker.evaluate" hreflang="en"><link data-rh="true" rel="alternate" href="https://pptr.dev/api/puppeteer.webworker.evaluate" hreflang="x-default"><link rel="stylesheet" href="/assets/css/styles.3247e0f2.css">
			`<link rel="preload" href="/assets/js/runtime~main.e9134571.js" as="script">`
			`<link rel="preload" href="/assets/js/main.8815833c.js" as="script">`
Deploy website - based on 7c3e51c22cbef937d4d01d32da8463095e0ca015 2022-06-28 11:21:17 +00:00			`</head>`
			`<body class="navigation-with-keyboard">`
			`<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}()</script><div id="__docusaurus">`
deploy: 4ef83e0ee65c770f320ee913458708e17d49ab4a 2022-10-26 08:34:12 +00:00			<div role="region" aria-label="theme.common.skipToMainContent"><a href="#" class="skipToContent_fXgn">Skip to main content</a></div><nav class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Navigation bar toggle" class="navbar__toggle clean-btn" type="button" tabindex="0"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/"><div class="navbar__logo"><img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" alt="Puppeteer Logo" class="themedImage_ToTc themedImage--light_HNdA"><img src="https://user-images.githubusercontent.com/10379601/29446482-04f7036a-841f-11e7-9872-91d1fc2ea683.png" alt="Puppeteer Logo" class="themedImage_ToTc themedImage--dark_i4oU"></div><b class="navbar__title text--truncate">Puppeteer</b></a></div><div class="navbar__items navbar__items--right"><div class="navbar__item dropdown dropdown--hoverable dropdown--right"><a class="navbar__link" aria-haspopup="true" aria-expanded="false" role="button" href="/">19.2.0</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/next/api/puppeteer.webworker.evaluate">Next</a></li><li><a aria-current="page" class="dropdown__link dropdown__link--active" href="/api/puppeteer.webworker.evaluate">19.2.0</a></li><li><hr class="dropdown-separator"></li><li class="dropdown-archived-versions"><b>Archived versions</b></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.2/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.2<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.1/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.1<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.1.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.1.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v19.0.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">19.0.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v18.2.1/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">18.2.1<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a href="https://github.com/puppeteer/puppeteer/blob/v18.2.0/docs/api/index.md" target="_blank" rel="noopener noreferrer" class="dropdown__link">18.2.0<svg width="12" height="12" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_nPIU"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></a></li><li><a
			`<script src="/assets/js/runtime~main.e9134571.js"></script>`
			`<script src="/assets/js/main.8815833c.js"></script>`
Deploy website - based on 7c3e51c22cbef937d4d01d32da8463095e0ca015 2022-06-28 11:21:17 +00:00			`</body>`
			`</html>`