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(Click to learn more.)"><span class="icon icon-question-mark "></span></a></div></form></li><li class=" "><a data-locale="de" href="/de/docs/Web/API/WorkerGlobalScope/setTimeout" class="button submenu-item"><span>Deutsch</span><span title="Diese Übersetzung ist Teil eines Experiments."><span class="icon icon-experimental "></span></span></a></li><li class=" "><a data-locale="en-US" href="/en-US/docs/Web/API/WorkerGlobalScope/setTimeout" class="button submenu-item"><span>English (US)</span></a></li></ul></div></div></li></ul></div></div></div></div><div class="container"><div class="notecard localized-content-note"><p><a href="/zh-CN/docs/MDN/Community/Contributing/Translated_content#活跃语言">此页面由社区从英文翻译而来。了解更多并加入 MDN Web Docs 社区。</a></p></div></div><div class="main-wrapper"><div class="sidebar-container"><aside id="sidebar-quicklinks" class="sidebar" data-macro="APIRef"><button type="button" class="button action backdrop" aria-label="Collapse sidebar"><span class="button-wrap"></span></button><nav aria-label="Related Topics" class="sidebar-inner"><header class="sidebar-actions"><section class="sidebar-filter-container"><div class="sidebar-filter "><label id="sidebar-filter-label" class="sidebar-filter-label" for="sidebar-filter-input"><span class="icon icon-filter"></span><span class="visually-hidden">Filter sidebar</span></label><input id="sidebar-filter-input" autoComplete="off" class="sidebar-filter-input-field false" type="text" placeholder="Filter" value=""/><button type="button" class="button action has-icon clear-sidebar-filter-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear filter input</span></span></button></div></section></header><div class="sidebar-inner-nav"><div class="in-nav-toc"><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">在本文中</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#语法">语法</a></li><li class="document-toc-item "><a class="document-toc-link" href="#描述">描述</a></li><li class="document-toc-item "><a class="document-toc-link" href="#示例">示例</a></li><li class="document-toc-item "><a class="document-toc-link" href="#规范">规范</a></li><li class="document-toc-item "><a class="document-toc-link" href="#浏览器兼容性">浏览器兼容性</a></li><li class="document-toc-item "><a class="document-toc-link" href="#参见">参见</a></li></ul></section></div></div><div class="sidebar-body"><ol><li class="section"><a href="/zh-CN/docs/Web/API/HTML_DOM_API">HTML DOM API</a></li><li class="section"><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope"><code>WorkerGlobalScope</code></a></li><li class="toggle"><details open=""><summary>实例属性</summary><ol><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/caches"><code>caches</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/crossOriginIsolated"><code>crossOriginIsolated</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/crypto"><code>crypto</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/fonts"><code>fonts</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/indexedDB"><code>indexedDB</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/isSecureContext"><code>isSecureContext</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/location"><code>location</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/navigator"><code>navigator</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/origin"><code>origin</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/performance"><code>performance</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/scheduler"><code>scheduler</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/self"><code>self</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/trustedTypes"><code>trustedTypes</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>实例方法</summary><ol><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/atob"><code>atob()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/btoa"><code>btoa()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/clearInterval"><code>clearInterval()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/clearTimeout"><code>clearTimeout()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/createImageBitmap"><code>createImageBitmap()</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/dump"><code>dump()</code></a><abbr class="icon icon-nonstandard" title="非标准。请在使用前检查跨浏览器支持。"> <span class="visually-hidden">非标准</span> </abbr><abbr class="icon icon-deprecated" title="已弃用。请不要在新的网站中使用。"> <span class="visually-hidden">已弃用</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/fetch"><code>fetch()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/importScripts"><code>importScripts()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/queueMicrotask"><code>queueMicrotask()</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/reportError"><code>reportError()</code></a></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/setInterval"><code>setInterval()</code></a></li><li><em><code>setTimeout()</code> </em></li><li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/structuredClone"><code>structuredClone()</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>事件</summary><ol><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/error_event"><code>error</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/languagechange_event"><code>languagechange</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/offline_event"><code>offline</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/online_event"><code>online</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/rejectionhandled_event"><code>rejectionhandled</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/securitypolicyviolation_event"><code>securitypolicyviolation</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope/unhandledrejection_event"><code>unhandledrejection</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>继承</summary><ol><li><a href="/zh-CN/docs/Web/API/EventTarget"><code>EventTarget</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>HTML DOM 的相关页面</summary><ol><li><a href="/zh-CN/docs/Web/API/BeforeUnloadEvent"><code>BeforeUnloadEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/DOMStringMap"><code>DOMStringMap</code></a></li><li><a href="/zh-CN/docs/Web/API/ErrorEvent"><code>ErrorEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLAnchorElement"><code>HTMLAnchorElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLAreaElement"><code>HTMLAreaElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLAudioElement"><code>HTMLAudioElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLBRElement"><code>HTMLBRElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLBaseElement"><code>HTMLBaseElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLBodyElement"><code>HTMLBodyElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLButtonElement"><code>HTMLButtonElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLCanvasElement"><code>HTMLCanvasElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDListElement"><code>HTMLDListElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDataElement"><code>HTMLDataElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDataListElement"><code>HTMLDataListElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDialogElement"><code>HTMLDialogElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDivElement"><code>HTMLDivElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLDocument"><code>HTMLDocument</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLEmbedElement"><code>HTMLEmbedElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLFieldSetElement"><code>HTMLFieldSetElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLFormControlsCollection"><code>HTMLFormControlsCollection</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLFormElement"><code>HTMLFormElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLFrameSetElement"><code>HTMLFrameSetElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLHRElement"><code>HTMLHRElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLHeadElement"><code>HTMLHeadElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLHeadingElement"><code>HTMLHeadingElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLHtmlElement"><code>HTMLHtmlElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLIFrameElement"><code>HTMLIFrameElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLImageElement"><code>HTMLImageElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLInputElement"><code>HTMLInputElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLLIElement"><code>HTMLLIElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLLabelElement"><code>HTMLLabelElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLLegendElement"><code>HTMLLegendElement</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/HTMLLinkElement"><code>HTMLLinkElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLMapElement"><code>HTMLMapElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLMediaElement"><code>HTMLMediaElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLMenuElement"><code>HTMLMenuElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLMetaElement"><code>HTMLMetaElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLMeterElement"><code>HTMLMeterElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLModElement"><code>HTMLModElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLOListElement"><code>HTMLOListElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLObjectElement"><code>HTMLObjectElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLOptGroupElement"><code>HTMLOptGroupElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLOptionElement"><code>HTMLOptionElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLOptionsCollection"><code>HTMLOptionsCollection</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLOutputElement"><code>HTMLOutputElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLParagraphElement"><code>HTMLParagraphElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLPictureElement"><code>HTMLPictureElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLPreElement"><code>HTMLPreElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLProgressElement"><code>HTMLProgressElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLQuoteElement"><code>HTMLQuoteElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLScriptElement"><code>HTMLScriptElement</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/HTMLSelectElement"><code>HTMLSelectElement</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/HTMLSourceElement"><code>HTMLSourceElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLSpanElement"><code>HTMLSpanElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLStyleElement"><code>HTMLStyleElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableCaptionElement"><code>HTMLTableCaptionElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableCellElement"><code>HTMLTableCellElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableColElement"><code>HTMLTableColElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableElement"><code>HTMLTableElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableRowElement"><code>HTMLTableRowElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTableSectionElement"><code>HTMLTableSectionElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTemplateElement"><code>HTMLTemplateElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTextAreaElement"><code>HTMLTextAreaElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTimeElement"><code>HTMLTimeElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTitleElement"><code>HTMLTitleElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLTrackElement"><code>HTMLTrackElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLUListElement"><code>HTMLUListElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLUnknownElement"><code>HTMLUnknownElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HTMLVideoElement"><code>HTMLVideoElement</code></a></li><li><a href="/zh-CN/docs/Web/API/HashChangeEvent"><code>HashChangeEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/History"><code>History</code></a></li><li><a href="/zh-CN/docs/Web/API/ImageData"><code>ImageData</code></a></li><li><a href="/zh-CN/docs/Web/API/Location"><code>Location</code></a></li><li><a href="/zh-CN/docs/Web/API/MessageChannel"><code>MessageChannel</code></a></li><li><a href="/zh-CN/docs/Web/API/MessageEvent"><code>MessageEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/MessagePort"><code>MessagePort</code></a></li><li><a href="/zh-CN/docs/Web/API/Navigator"><code>Navigator</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/PageRevealEvent"><code>PageRevealEvent</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/PageSwapEvent"><code>PageSwapEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/PageTransitionEvent"><code>PageTransitionEvent</code></a></li><li><a href="/zh-CN/docs/Web/API/Plugin"><code>Plugin</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/PluginArray"><code>PluginArray</code></a><abbr class="icon icon-deprecated" title="已弃用。请不要在新的网站中使用。"> <span class="visually-hidden">已弃用</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/PromiseRejectionEvent"><code>PromiseRejectionEvent</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/RadioNodeList"><code>RadioNodeList</code></a></li><li><a href="/zh-CN/docs/Web/API/UserActivation"><code>UserActivation</code></a></li><li><a href="/zh-CN/docs/Web/API/ValidityState"><code>ValidityState</code></a></li><li><a href="/zh-CN/docs/Web/API/Window"><code>Window</code></a></li><li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkletGlobalScope"><code>WorkletGlobalScope</code></a></li></ol></details></li></ol></div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">在本文中</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#语法">语法</a></li><li class="document-toc-item "><a class="document-toc-link" href="#描述">描述</a></li><li class="document-toc-item "><a class="document-toc-link" href="#示例">示例</a></li><li class="document-toc-item "><a class="document-toc-link" href="#规范">规范</a></li><li class="document-toc-item "><a class="document-toc-link" href="#浏览器兼容性">浏览器兼容性</a></li><li class="document-toc-item "><a class="document-toc-link" href="#参见">参见</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="zh-CN"><header><h1>WorkerGlobalScope：setTimeout() 方法</h1><details class="baseline-indicator high"><summary><span class="indicator" role="img" aria-label="Baseline Check"></span><h2>Baseline <span class="not-bold">Widely available</span></h2><div class="browsers"><span class="engine" title="Supported in Chrome and Edge"><span class="browser chrome supported" role="img" aria-label="Chrome check"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Supported in Firefox"><span class="browser firefox supported" role="img" aria-label="Firefox check"></span></span><span class="engine" title="Supported in Safari"><span class="browser safari supported" role="img" aria-label="Safari check"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.</p><ul><li><a href="/zh-CN/docs/Glossary/Baseline/Compatibility" data-glean="baseline_link_learn_more" target="_blank" class="learn-more">Learn more</a></li><li><a href="#浏览器兼容性" data-glean="baseline_link_bcd_table">See full compatibility</a></li><li><a href="https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fzh-CN%2Fdocs%2FWeb%2FAPI%2FWorkerGlobalScope%2FsetTimeout&level=high" data-glean="baseline_link_feedback" class="feedback-link" target="_blank" rel="noreferrer">Report feedback</a></li></ul></div></details></header><div class="section-content"><div class="notecard note"> <p><strong>备注：</strong> 此特性仅在 <a href="/zh-CN/docs/Web/API/Web_Workers_API">Web Worker</a> 中可用。</p> </div> <p><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/WorkerGlobalScope"><code>WorkerGlobalScope</code></a> 接口的 <strong><code>setTimeout()</code></strong> 方法设置一个定时器，一旦定时器到期，就会执行一个函数或指定的代码片段。</p></div><section aria-labelledby="语法"><h2 id="语法"><a href="#语法">语法</a></h2><div class="section-content"><div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>setTimeout(code) setTimeout(code, delay) setTimeout(functionRef) setTimeout(functionRef, delay) setTimeout(functionRef, delay, param1) setTimeout(functionRef, delay, param1, param2) setTimeout(functionRef, delay, param1, param2, /* …, */ paramN) </code></pre></div></div></section><section aria-labelledby="参数"><h3 id="参数"><a href="#参数">参数</a></h3><div class="section-content"><dl> <dt id="functionref"><a href="#functionref"><code>functionRef</code></a></dt> <dd> <p>当定时器到期后要执行的<a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Function">函数</a>。</p> </dd> <dt id="code"><a href="#code"><code>code</code></a></dt> <dd> <p>这是一个代替语法，允许你包含在定时器到期后编译和执行的字符串而非函数。这个语法因为与 <a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/eval"><code>eval()</code></a> 存在相同的安全风险所以<strong>不推荐</strong>使用。</p> </dd> <dt id="delay"><a href="#delay"><code>delay</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>定时器在执行指定的函数或代码之前应该等待的时间，单位是毫秒。如果省略该参数，则使用值 0，意味着“立即”执行，或者更准确地说，在下一个事件循环执行。</p> <p>注意，无论是哪种情况，实际延迟可能会比预期长一些，参见<a href="/zh-CN/docs/Web/API/Window/setTimeout#%E5%BB%B6%E6%97%B6%E6%AF%94%E6%8C%87%E5%AE%9A%E5%80%BC%E6%9B%B4%E9%95%BF%E7%9A%84%E5%8E%9F%E5%9B%A0">延时比指定值更长的原因</a>。</p> <p>还要注意的是，如果值不是数字，隐式的<a href="/zh-CN/docs/Glossary/Type_coercion">类型强制转换</a>会静默地将其转换为数字——这可能导致意想不到的、令人惊讶的结果；参见<a href="/zh-CN/docs/Web/API/Window/setTimeout#%E9%9D%9E%E6%95%B0%E5%AD%97%E5%BB%B6%E8%BF%9F%E5%80%BC%E8%A2%AB%E9%9D%99%E9%BB%98%E5%9C%B0%E5%BC%BA%E5%88%B6%E8%BD%AC%E5%8C%96%E4%B8%BA%E6%95%B0%E5%AD%97">非数字延迟值被静默地强制转化为数字</a>以获取示例。</p> </dd> <dt id="param1"><a href="#param1"><code>param1</code></a>、……、<code>paramN</code> <span class="badge inline optional">可选</span></dt> <dd> <p>会被传递给由 <code>functionRef</code> 指定的函数的附加参数。</p> </dd> </dl></div></section><section aria-labelledby="返回值"><h3 id="返回值"><a href="#返回值">返回值</a></h3><div class="section-content"><p>返回值 <code>timeoutID</code> 是一个正整数，表示由 <code>setTimeout()</code> 调用创建的定时器的标识符。可以将这个值传递给 <a href="/zh-CN/docs/Web/API/Window/clearTimeout" title="clearTimeout()"><code>clearTimeout()</code></a> 来取消该定时器。</p> <p>在定时器仍然激活的情况下，保证 <code>timeoutID</code> 值不会被同一 worker 中的后续 <code>setTimeout()</code> 或 <code>setInterval()</code> 调用重复使用。然而，不同的对象使用不同的 ID 池。</p></div></section><section aria-labelledby="描述"><h2 id="描述"><a href="#描述">描述</a></h2><div class="section-content"><p>参见 <a href="/zh-CN/docs/Web/API/Window/setTimeout"><code>Window.setTimeout()</code></a> 以获取详细的描述。</p></div></section><section aria-labelledby="示例"><h2 id="示例"><a href="#示例">示例</a></h2><div class="section-content"><p>参见 <a href="/zh-CN/docs/Web/API/Window/setTimeout"><code>Window.setTimeout()</code></a> 以获取示例。</p></div></section><h2 id="规范"><a href="#规范">规范</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-settimeout-dev">HTML Standard <br/><small># dom-settimeout-dev</small></a></td></tr></tbody></table><h2 id="浏览器兼容性"><a href="#浏览器兼容性">浏览器兼容性</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p><section aria-labelledby="参见"><h2 id="参见"><a href="#参见">参见</a></h2><div class="section-content"><ul> <li><a href="https://github.com/zloirock/core-js#settimeout-and-setinterval" class="external" target="_blank"><code>core-js</code> 中允许向回调函数传递参数的 <code>setTimeout</code> 版本的 polyfill</a></li> <li><a href="/zh-CN/docs/Web/API/Window/setTimeout"><code>Window.setTimeout()</code></a></li> <li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/clearTimeout"><code>WorkerGlobalScope.clearTimeout()</code></a></li> <li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/setInterval"><code>WorkerGlobalScope.setInterval()</code></a></li> <li><a class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/DedicatedWorkerGlobalScope/requestAnimationFrame"><code>DedicatedWorkerGlobalScope.requestAnimationFrame()</code></a></li> <li><a href="/zh-CN/docs/Web/API/WorkerGlobalScope/queueMicrotask"><code>WorkerGlobalScope.queueMicrotask()</code></a></li> 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Content available under <a href="/zh-CN/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/zh-CN/docs/Web/API/WorkerGlobalScope/setTimeout","doc":{"isMarkdown":true,"isTranslated":true,"isActive":true,"flaws":{},"title":"WorkerGlobalScope：setTimeout() 方法","mdn_url":"/zh-CN/docs/Web/API/WorkerGlobalScope/setTimeout","locale":"zh-CN","native":"中文 (简体)","browserCompat":["api.setTimeout"],"baseline":{"baseline":"high","baseline_high_date":"2018-01-29","baseline_low_date":"2015-07-29","support":{"chrome":"1","chrome_android":"18","edge":"12","firefox":"1","firefox_android":"4","safari":"4","safari_ios":"1"}},"sidebarHTML":"<ol><li class=\"section\"><a href=\"/zh-CN/docs/Web/API/HTML_DOM_API\">HTML DOM API</a></li><li class=\"section\"><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope\"><code>WorkerGlobalScope</code></a></li><li class=\"toggle\"><details open=\"\"><summary>实例属性</summary><ol><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/caches\"><code>caches</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/crossOriginIsolated\"><code>crossOriginIsolated</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/crypto\"><code>crypto</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/fonts\"><code>fonts</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/indexedDB\"><code>indexedDB</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/isSecureContext\"><code>isSecureContext</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/location\"><code>location</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/navigator\"><code>navigator</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/origin\"><code>origin</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/performance\"><code>performance</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/scheduler\"><code>scheduler</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/self\"><code>self</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/trustedTypes\"><code>trustedTypes</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>实例方法</summary><ol><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/atob\"><code>atob()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/btoa\"><code>btoa()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/clearInterval\"><code>clearInterval()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/clearTimeout\"><code>clearTimeout()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/createImageBitmap\"><code>createImageBitmap()</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/dump\"><code>dump()</code></a><abbr class=\"icon icon-nonstandard\" title=\"非标准。请在使用前检查跨浏览器支持。\">\n <span class=\"visually-hidden\">非标准</span>\n</abbr><abbr class=\"icon icon-deprecated\" title=\"已弃用。请不要在新的网站中使用。\">\n <span class=\"visually-hidden\">已弃用</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/fetch\"><code>fetch()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/importScripts\"><code>importScripts()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/queueMicrotask\"><code>queueMicrotask()</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/reportError\"><code>reportError()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/setInterval\"><code>setInterval()</code></a></li><li><em><code>setTimeout()</code> </em></li><li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/structuredClone\"><code>structuredClone()</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>事件</summary><ol><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/error_event\"><code>error</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/languagechange_event\"><code>languagechange</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/offline_event\"><code>offline</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/online_event\"><code>online</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/rejectionhandled_event\"><code>rejectionhandled</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/securitypolicyviolation_event\"><code>securitypolicyviolation</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope/unhandledrejection_event\"><code>unhandledrejection</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>继承</summary><ol><li><a href=\"/zh-CN/docs/Web/API/EventTarget\"><code>EventTarget</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>HTML DOM 的相关页面</summary><ol><li><a href=\"/zh-CN/docs/Web/API/BeforeUnloadEvent\"><code>BeforeUnloadEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/DOMStringMap\"><code>DOMStringMap</code></a></li><li><a href=\"/zh-CN/docs/Web/API/ErrorEvent\"><code>ErrorEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLAnchorElement\"><code>HTMLAnchorElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLAreaElement\"><code>HTMLAreaElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLAudioElement\"><code>HTMLAudioElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLBRElement\"><code>HTMLBRElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLBaseElement\"><code>HTMLBaseElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLBodyElement\"><code>HTMLBodyElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLButtonElement\"><code>HTMLButtonElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLCanvasElement\"><code>HTMLCanvasElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDListElement\"><code>HTMLDListElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDataElement\"><code>HTMLDataElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDataListElement\"><code>HTMLDataListElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDialogElement\"><code>HTMLDialogElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDivElement\"><code>HTMLDivElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLDocument\"><code>HTMLDocument</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLEmbedElement\"><code>HTMLEmbedElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLFieldSetElement\"><code>HTMLFieldSetElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLFormControlsCollection\"><code>HTMLFormControlsCollection</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLFormElement\"><code>HTMLFormElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLFrameSetElement\"><code>HTMLFrameSetElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLHRElement\"><code>HTMLHRElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLHeadElement\"><code>HTMLHeadElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLHeadingElement\"><code>HTMLHeadingElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLHtmlElement\"><code>HTMLHtmlElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLIFrameElement\"><code>HTMLIFrameElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLImageElement\"><code>HTMLImageElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLInputElement\"><code>HTMLInputElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLLIElement\"><code>HTMLLIElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLLabelElement\"><code>HTMLLabelElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLLegendElement\"><code>HTMLLegendElement</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/HTMLLinkElement\"><code>HTMLLinkElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLMapElement\"><code>HTMLMapElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLMediaElement\"><code>HTMLMediaElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLMenuElement\"><code>HTMLMenuElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLMetaElement\"><code>HTMLMetaElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLMeterElement\"><code>HTMLMeterElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLModElement\"><code>HTMLModElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLOListElement\"><code>HTMLOListElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLObjectElement\"><code>HTMLObjectElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLOptGroupElement\"><code>HTMLOptGroupElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLOptionElement\"><code>HTMLOptionElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLOptionsCollection\"><code>HTMLOptionsCollection</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLOutputElement\"><code>HTMLOutputElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLParagraphElement\"><code>HTMLParagraphElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLPictureElement\"><code>HTMLPictureElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLPreElement\"><code>HTMLPreElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLProgressElement\"><code>HTMLProgressElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLQuoteElement\"><code>HTMLQuoteElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLScriptElement\"><code>HTMLScriptElement</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/HTMLSelectElement\"><code>HTMLSelectElement</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/HTMLSourceElement\"><code>HTMLSourceElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLSpanElement\"><code>HTMLSpanElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLStyleElement\"><code>HTMLStyleElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableCaptionElement\"><code>HTMLTableCaptionElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableCellElement\"><code>HTMLTableCellElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableColElement\"><code>HTMLTableColElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableElement\"><code>HTMLTableElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableRowElement\"><code>HTMLTableRowElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTableSectionElement\"><code>HTMLTableSectionElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTemplateElement\"><code>HTMLTemplateElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTextAreaElement\"><code>HTMLTextAreaElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTimeElement\"><code>HTMLTimeElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTitleElement\"><code>HTMLTitleElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLTrackElement\"><code>HTMLTrackElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLUListElement\"><code>HTMLUListElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLUnknownElement\"><code>HTMLUnknownElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HTMLVideoElement\"><code>HTMLVideoElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/HashChangeEvent\"><code>HashChangeEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/History\"><code>History</code></a></li><li><a href=\"/zh-CN/docs/Web/API/ImageData\"><code>ImageData</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Location\"><code>Location</code></a></li><li><a href=\"/zh-CN/docs/Web/API/MessageChannel\"><code>MessageChannel</code></a></li><li><a href=\"/zh-CN/docs/Web/API/MessageEvent\"><code>MessageEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/MessagePort\"><code>MessagePort</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Navigator\"><code>Navigator</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/PageRevealEvent\"><code>PageRevealEvent</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/PageSwapEvent\"><code>PageSwapEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/PageTransitionEvent\"><code>PageTransitionEvent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Plugin\"><code>Plugin</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/PluginArray\"><code>PluginArray</code></a><abbr class=\"icon icon-deprecated\" title=\"已弃用。请不要在新的网站中使用。\">\n <span class=\"visually-hidden\">已弃用</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/PromiseRejectionEvent\"><code>PromiseRejectionEvent</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/RadioNodeList\"><code>RadioNodeList</code></a></li><li><a href=\"/zh-CN/docs/Web/API/UserActivation\"><code>UserActivation</code></a></li><li><a href=\"/zh-CN/docs/Web/API/ValidityState\"><code>ValidityState</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window\"><code>Window</code></a></li><li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkletGlobalScope\"><code>WorkletGlobalScope</code></a></li></ol></details></li></ol>","sidebarMacro":"APIRef","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<div class=\"notecard note\">\n <p><strong>备注：</strong> 此特性仅在 <a href=\"/zh-CN/docs/Web/API/Web_Workers_API\">Web Worker</a> 中可用。</p>\n</div>\n<p><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/WorkerGlobalScope\"><code>WorkerGlobalScope</code></a> 接口的 <strong><code>setTimeout()</code></strong> 方法设置一个定时器，一旦定时器到期，就会执行一个函数或指定的代码片段。</p>"}},{"type":"prose","value":{"id":"语法","title":"语法","isH3":false,"content":"<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>setTimeout(code)\nsetTimeout(code, delay)\n\nsetTimeout(functionRef)\nsetTimeout(functionRef, delay)\nsetTimeout(functionRef, delay, param1)\nsetTimeout(functionRef, delay, param1, param2)\nsetTimeout(functionRef, delay, param1, param2, /* …, */ paramN)\n</code></pre></div>"}},{"type":"prose","value":{"id":"参数","title":"参数","isH3":true,"content":"<dl>\n <dt id=\"functionref\"><a href=\"#functionref\"><code>functionRef</code></a></dt>\n <dd>\n <p>当定时器到期后要执行的<a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Function\">函数</a>。</p>\n </dd>\n <dt id=\"code\"><a href=\"#code\"><code>code</code></a></dt>\n <dd>\n <p>这是一个代替语法，允许你包含在定时器到期后编译和执行的字符串而非函数。这个语法因为与 <a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/eval\"><code>eval()</code></a> 存在相同的安全风险所以<strong>不推荐</strong>使用。</p>\n </dd>\n <dt id=\"delay\"><a href=\"#delay\"><code>delay</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>定时器在执行指定的函数或代码之前应该等待的时间，单位是毫秒。如果省略该参数，则使用值 0，意味着“立即”执行，或者更准确地说，在下一个事件循环执行。</p>\n <p>注意，无论是哪种情况，实际延迟可能会比预期长一些，参见<a href=\"/zh-CN/docs/Web/API/Window/setTimeout#%E5%BB%B6%E6%97%B6%E6%AF%94%E6%8C%87%E5%AE%9A%E5%80%BC%E6%9B%B4%E9%95%BF%E7%9A%84%E5%8E%9F%E5%9B%A0\">延时比指定值更长的原因</a>。</p>\n <p>还要注意的是，如果值不是数字，隐式的<a href=\"/zh-CN/docs/Glossary/Type_coercion\">类型强制转换</a>会静默地将其转换为数字——这可能导致意想不到的、令人惊讶的结果；参见<a href=\"/zh-CN/docs/Web/API/Window/setTimeout#%E9%9D%9E%E6%95%B0%E5%AD%97%E5%BB%B6%E8%BF%9F%E5%80%BC%E8%A2%AB%E9%9D%99%E9%BB%98%E5%9C%B0%E5%BC%BA%E5%88%B6%E8%BD%AC%E5%8C%96%E4%B8%BA%E6%95%B0%E5%AD%97\">非数字延迟值被静默地强制转化为数字</a>以获取示例。</p>\n </dd>\n <dt id=\"param1\"><a href=\"#param1\"><code>param1</code></a>、……、<code>paramN</code> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>会被传递给由 <code>functionRef</code> 指定的函数的附加参数。</p>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"返回值","title":"返回值","isH3":true,"content":"<p>返回值 <code>timeoutID</code> 是一个正整数，表示由 <code>setTimeout()</code> 调用创建的定时器的标识符。可以将这个值传递给 <a href=\"/zh-CN/docs/Web/API/Window/clearTimeout\" title=\"clearTimeout()\"><code>clearTimeout()</code></a> 来取消该定时器。</p>\n<p>在定时器仍然激活的情况下，保证 <code>timeoutID</code> 值不会被同一 worker 中的后续 <code>setTimeout()</code> 或 <code>setInterval()</code> 调用重复使用。然而，不同的对象使用不同的 ID 池。</p>"}},{"type":"prose","value":{"id":"描述","title":"描述","isH3":false,"content":"<p>参见 <a href=\"/zh-CN/docs/Web/API/Window/setTimeout\"><code>Window.setTimeout()</code></a> 以获取详细的描述。</p>"}},{"type":"prose","value":{"id":"示例","title":"示例","isH3":false,"content":"<p>参见 <a href=\"/zh-CN/docs/Web/API/Window/setTimeout\"><code>Window.setTimeout()</code></a> 以获取示例。</p>"}},{"type":"specifications","value":{"title":"规范","id":"规范","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-settimeout-dev","title":"HTML Standard"}],"query":"api.setTimeout"}},{"type":"browser_compatibility","value":{"title":"浏览器兼容性","id":"浏览器兼容性","isH3":false,"query":"api.setTimeout"}},{"type":"prose","value":{"id":"参见","title":"参见","isH3":false,"content":"<ul>\n <li><a href=\"https://github.com/zloirock/core-js#settimeout-and-setinterval\" class=\"external\" target=\"_blank\"><code>core-js</code> 中允许向回调函数传递参数的 <code>setTimeout</code> 版本的 polyfill</a></li>\n <li><a href=\"/zh-CN/docs/Web/API/Window/setTimeout\"><code>Window.setTimeout()</code></a></li>\n <li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/clearTimeout\"><code>WorkerGlobalScope.clearTimeout()</code></a></li>\n <li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/setInterval\"><code>WorkerGlobalScope.setInterval()</code></a></li>\n <li><a class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/DedicatedWorkerGlobalScope/requestAnimationFrame\"><code>DedicatedWorkerGlobalScope.requestAnimationFrame()</code></a></li>\n <li><a href=\"/zh-CN/docs/Web/API/WorkerGlobalScope/queueMicrotask\"><code>WorkerGlobalScope.queueMicrotask()</code></a></li>\n</ul>"}}],"toc":[{"text":"语法","id":"语法"},{"text":"描述","id":"描述"},{"text":"示例","id":"示例"},{"text":"规范","id":"规范"},{"text":"浏览器兼容性","id":"浏览器兼容性"},{"text":"参见","id":"参见"}],"summary":"WorkerGlobalScope 接口的 setTimeout() 方法设置一个定时器，一旦定时器到期，就会执行一个函数或指定的代码片段。","popularity":0,"modified":"2024-10-08T11:46:54.000Z","other_translations":[{"locale":"de","title":"WorkerGlobalScope: setTimeout() Methode","native":"Deutsch"},{"locale":"en-US","title":"WorkerGlobalScope: setTimeout() method","native":"English (US)"}],"pageType":"unknown","source":{"folder":"zh-cn/web/api/workerglobalscope/settimeout","github_url":"https://github.com/mdn/translated-content/blob/main/files/zh-cn/web/api/workerglobalscope/settimeout/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/9ce80bfea141b0a765556e9a825599b0505db2ee","filename":"index.md"},"short_title":"WorkerGlobalScope：setTimeout() 方法","parents":[{"uri":"/zh-CN/docs/Web","title":"面向开发者的 Web 技术"},{"uri":"/zh-CN/docs/Web/API","title":"Web API"},{"uri":"/zh-CN/docs/Web/API/WorkerGlobalScope/setTimeout","title":"WorkerGlobalScope：setTimeout() 方法"}],"pageTitle":"WorkerGlobalScope：setTimeout() 方法 - Web API | MDN","noIndexing":false}}</script></body></html>