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class="article-actions-entry"><div class="languages-switcher-menu open-on-focus-within"><button id="languages-switcher-button" type="button" class="button action small has-icon languages-switcher-menu" aria-haspopup="menu"><span class="button-wrap"><span class="icon icon-language "></span>中文 (简体)</span></button><div class="hidden"><ul class="submenu language-menu " aria-labelledby="language-menu-button"><li class=" "><form class="submenu-item locale-redirect-setting"><div class="group"><label class="switch"><input type="checkbox" name="locale-redirect"/><span class="slider"></span><span class="label">Remember language</span></label><a href="https://github.com/orgs/mdn/discussions/739" rel="external noopener noreferrer" target="_blank" title="Enable this setting to automatically switch to this language when it's available. (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/Window/showSaveFilePicker" 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/Window/showSaveFilePicker" class="button submenu-item"><span>English (US)</span></a></li><li class=" "><a data-locale="ja" href="/ja/docs/Web/API/Window/showSaveFilePicker" class="button submenu-item"><span>日本語</span></a></li><li class=" "><a data-locale="ko" href="/ko/docs/Web/API/Window/showSaveFilePicker" class="button submenu-item"><span>한국어</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="#安全性">安全性</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/File_System_API">File System API</a></li><li class="section"><a href="/zh-CN/docs/Web/API/Window"><code>Window</code></a></li><li class="toggle"><details open=""><summary>实例属性</summary><ol><li><a href="/zh-CN/docs/Web/API/Window/caches"><code>caches</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/closed"><code>closed</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/console"><code>console</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/cookieStore"><code>cookieStore</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/Window/credentialless"><code>credentialless</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/Window/crossOriginIsolated"><code>crossOriginIsolated</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/crypto"><code>crypto</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/customElements"><code>customElements</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/devicePixelRatio"><code>devicePixelRatio</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/document"><code>document</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/documentPictureInPicture"><code>documentPictureInPicture</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/event"><code>event</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/external"><code>external</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/fence"><code>fence</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/frameElement"><code>frameElement</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/frames"><code>frames</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/fullScreen"><code>fullScreen</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/history"><code>history</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/indexedDB"><code>indexedDB</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/innerHeight"><code>innerHeight</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/innerWidth"><code>innerWidth</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/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/Window/launchQueue"><code>launchQueue</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/Window/length"><code>length</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/localStorage"><code>localStorage</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/location"><code>location</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/locationbar"><code>locationbar</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/menubar"><code>menubar</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/mozInnerScreenX"><code>mozInnerScreenX</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/mozInnerScreenY"><code>mozInnerScreenY</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/name"><code>name</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/navigation"><code>navigation</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/navigator"><code>navigator</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/opener"><code>opener</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/Window/orientation"><code>orientation</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/Window/origin"><code>origin</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/Window/originAgentCluster"><code>originAgentCluster</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/Window/outerHeight"><code>outerHeight</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/outerWidth"><code>outerWidth</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/parent"><code>parent</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/performance"><code>performance</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/personalbar"><code>personalbar</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/Window/scheduler"><code>scheduler</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/screen"><code>screen</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/screenLeft"><code>screenLeft</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/screenTop"><code>screenTop</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/screenX"><code>screenX</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/screenY"><code>screenY</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollbars"><code>scrollbars</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollMaxX"><code>scrollMaxX</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollMaxY"><code>scrollMaxY</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollX"><code>scrollX</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollY"><code>scrollY</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/self"><code>self</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/sessionStorage"><code>sessionStorage</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/Window/sharedStorage"><code>sharedStorage</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></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/Window/speechSynthesis"><code>speechSynthesis</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/Window/status"><code>status</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/Window/statusbar"><code>statusbar</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/toolbar"><code>toolbar</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/top"><code>top</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/trustedTypes"><code>trustedTypes</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/visualViewport"><code>visualViewport</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/window"><code>window</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/Window/alert"><code>alert()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/atob"><code>atob()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/back"><code>back()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/blur"><code>blur()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/btoa"><code>btoa()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/cancelAnimationFrame"><code>cancelAnimationFrame()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/cancelIdleCallback"><code>cancelIdleCallback()</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/Window/captureEvents"><code>captureEvents()</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/Window/clearImmediate"><code>clearImmediate()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/clearInterval"><code>clearInterval()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/clearTimeout"><code>clearTimeout()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/close"><code>close()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/confirm"><code>confirm()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/createImageBitmap"><code>createImageBitmap()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/dump"><code>dump()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/fetch"><code>fetch()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/find"><code>find()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/focus"><code>focus()</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/Window/forward"><code>forward()</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/Window/getComputedStyle"><code>getComputedStyle()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/getDefaultComputedStyle"><code>getDefaultComputedStyle()</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/Window/getScreenDetails"><code>getScreenDetails()</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/Window/getSelection"><code>getSelection()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/matchMedia"><code>matchMedia()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/moveBy"><code>moveBy()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/moveTo"><code>moveTo()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/open"><code>open()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/postMessage"><code>postMessage()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/print"><code>print()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/prompt"><code>prompt()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/queryLocalFonts"><code>queryLocalFonts()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/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/Window/releaseEvents"><code>releaseEvents()</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/Window/reportError"><code>reportError()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/requestAnimationFrame"><code>requestAnimationFrame()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/requestFileSystem"><code>requestFileSystem()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/requestIdleCallback"><code>requestIdleCallback()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/resizeBy"><code>resizeBy()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/resizeTo"><code>resizeTo()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scroll"><code>scroll()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollBy"><code>scrollBy()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollByLines"><code>scrollByLines()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollByPages"><code>scrollByPages()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/scrollTo"><code>scrollTo()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/setImmediate"><code>setImmediate()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/setInterval"><code>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/Window/setResizable"><code>setResizable()</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/Window/setTimeout"><code>setTimeout()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/showDirectoryPicker"><code>showDirectoryPicker()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/showModalDialog"><code>showModalDialog()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/showOpenFilePicker"><code>showOpenFilePicker()</code></a></li><li><em><code>showSaveFilePicker()</code> <abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></em></li><li><a href="/zh-CN/docs/Web/API/Window/sizeToContent"><code>sizeToContent()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/stop"><code>stop()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/structuredClone"><code>structuredClone()</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/Window/webkitConvertPointFromNodeToPage"><code>webkitConvertPointFromNodeToPage()</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 class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/Window/webkitConvertPointFromPageToNode"><code>webkitConvertPointFromPageToNode()</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></ol></details></li><li class="toggle"><details open=""><summary>事件</summary><ol><li><a href="/zh-CN/docs/Web/API/Window/afterprint_event"><code>afterprint</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/appinstalled_event"><code>appinstalled</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/beforeinstallprompt_event"><code>beforeinstallprompt</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/beforeprint_event"><code>beforeprint</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/beforeunload_event"><code>beforeunload</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/blur_event"><code>blur</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/copy_event"><code>copy</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/cut_event"><code>cut</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/devicemotion_event"><code>devicemotion</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/deviceorientation_event"><code>deviceorientation</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/Window/deviceorientationabsolute_event"><code>deviceorientationabsolute</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/error_event"><code>error</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/focus_event"><code>focus</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/gamepadconnected_event"><code>gamepadconnected</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/Window/gamepaddisconnected_event"><code>gamepaddisconnected</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/hashchange_event"><code>hashchange</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/languagechange_event"><code>languagechange</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/load_event"><code>load</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/message_event"><code>message</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/messageerror_event"><code>messageerror</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/offline_event"><code>offline</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/online_event"><code>online</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/orientationchange_event"><code>orientationchange</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/pagehide_event"><code>pagehide</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/Window/pagereveal_event"><code>pagereveal</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/pageshow_event"><code>pageshow</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/Window/pageswap_event"><code>pageswap</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/paste_event"><code>paste</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/popstate_event"><code>popstate</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/rejectionhandled_event"><code>rejectionhandled</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/resize_event"><code>resize</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/Window/scrollsnapchange_event"><code>scrollsnapchange</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></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/Window/scrollsnapchanging_event"><code>scrollsnapchanging</code></a><abbr class="icon icon-experimental" title="实验性。预期行为可能会在未来发生变更。"> <span class="visually-hidden">实验性</span> </abbr></li><li><a href="/zh-CN/docs/Web/API/Window/storage_event"><code>storage</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/unhandledrejection_event"><code>unhandledrejection</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/unload_event"><code>unload</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/Window/vrdisplayactivate_event"><code>vrdisplayactivate</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 class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/Window/vrdisplayconnect_event"><code>vrdisplayconnect</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 class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/Window/vrdisplaydeactivate_event"><code>vrdisplaydeactivate</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 class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/Window/vrdisplaydisconnect_event"><code>vrdisplaydisconnect</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 class="only-in-en-us" title="此页面目前仅提供英文版本" href="/en-US/docs/Web/API/Window/vrdisplaypresentchange_event"><code>vrdisplaypresentchange</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></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>File System API 的相关页面</summary><ol><li><a href="/zh-CN/docs/Web/API/DataTransferItem/getAsFileSystemHandle"><code>DataTransferItem.getAsFileSystemHandle()</code></a></li><li><a href="/zh-CN/docs/Web/API/FileSystemDirectoryHandle"><code>FileSystemDirectoryHandle</code></a></li><li><a href="/zh-CN/docs/Web/API/FileSystemFileHandle"><code>FileSystemFileHandle</code></a></li><li><a href="/zh-CN/docs/Web/API/FileSystemHandle"><code>FileSystemHandle</code></a></li><li><a href="/zh-CN/docs/Web/API/FileSystemSyncAccessHandle"><code>FileSystemSyncAccessHandle</code></a></li><li><a href="/zh-CN/docs/Web/API/FileSystemWritableFileStream"><code>FileSystemWritableFileStream</code></a></li><li><a href="/zh-CN/docs/Web/API/StorageManager/getDirectory"><code>StorageManager.getDirectory()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/showDirectoryPicker"><code>Window.showDirectoryPicker()</code></a></li><li><a href="/zh-CN/docs/Web/API/Window/showOpenFilePicker"><code>Window.showOpenFilePicker()</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="#安全性">安全性</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>Window：showSaveFilePicker() 方法</h1><details class="baseline-indicator not"><summary><span class="indicator" role="img" aria-label="Baseline Cross"></span><h2><span class="not-bold">Limited availability</span></h2><div class="browsers"><span class="engine" title="Not widely supported in Chrome, and supported in Edge"><span class="browser chrome " role="img" aria-label="Chrome cross"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Not widely supported in Firefox"><span class="browser firefox " role="img" aria-label="Firefox cross"></span></span><span class="engine" title="Not widely supported in Safari"><span class="browser safari " role="img" aria-label="Safari cross"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is not Baseline because it does not work in some of the most widely-used browsers.</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%2FWindow%2FshowSaveFilePicker&level=not" 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 secure"><p><strong>安全上下文:</strong> 此项功能仅在一些<a href="#浏览器兼容性">支持的浏览器</a>的<a href="/zh-CN/docs/Web/Security/Secure_Contexts">安全上下文</a>（HTTPS）中可用。</p></div><div class="notecard experimental"><p><strong>实验性:</strong> <strong>这是一项<a href="/zh-CN/docs/MDN/Writing_guidelines/Experimental_deprecated_obsolete#实验性">实验性技术</a></strong><br>在将其用于生产之前，请仔细检查<a href="#浏览器兼容性">浏览器兼容性表格</a>。</p></div> <p><a href="/zh-CN/docs/Web/API/Window"><code>Window</code></a> 接口的 <strong><code>showSaveFilePicker()</code></strong> 方法用于显示一个文件选择器，以允许用户保存一个文件。可以选择一个已有文件覆盖保存，也可以输入名字新建一个文件。</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>showSaveFilePicker() </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="options"><a href="#options"><code>options</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>选项对象，包含以下属性：</p> <dl> <dt id="excludeacceptalloption"><a href="#excludeacceptalloption"><code>excludeAcceptAllOption</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>布尔值，默认为 <code>false</code>。默认情况下，选择器应包含一个不应用任何文件类型过滤器的选项（通过下面的类型选项启动）。将此选项设置为 <code>true</code> 意味着该选项<em>不</em>可用。</p> </dd> <dt id="id"><a href="#id"><code>id</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>通过指定 ID，浏览器可以为不同的 ID 记住不同的目录。如果相同的 ID 用于另一个选择器，则该选择器将在同一目录中打开。</p> </dd> <dt id="startin"><a href="#startin"><code>startIn</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>一个 <code>FileSystemHandle</code> 对象或一个众所周知的目录（<code>"desktop"</code>、<code>"documents"</code>、<code>"downloads"</code>、<code>"music"</code>、<code>"pictures"</code> 或 <code>"videos"</code>）以指定打开选择器的起始目录。</p> </dd> <dt id="suggestedname"><a href="#suggestedname"><code>suggestedName</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>一个<a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String">字符串</a>。建议的文件名。</p> </dd> <dt id="types"><a href="#types"><code>types</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>允许选择的文件类型的<a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array">数组</a>。每个项目都是一个具有以下选项的对象：</p> <dl> <dt id="description"><a href="#description"><code>description</code></a> <span class="badge inline optional">可选</span></dt> <dd> <p>允许的文件类型类别的可选描述。默认为空字符串。</p> </dd> <dt id="accept"><a href="#accept"><code>accept</code></a></dt> <dd> <p>一个 <a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object"><code>Object</code></a>，其键设置为 <a href="/zh-CN/docs/Web/HTTP/MIME_types/Common_types">MIME 类型</a>，值设置为文件扩展名的<a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array">数组</a>（参见下面的示例）。</p> </dd> </dl> </dd> </dl> </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>一个 <a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Promise"><code>Promise</code></a> 对象，会兑现一个 <a href="/zh-CN/docs/Web/API/FileSystemFileHandle"><code>FileSystemFileHandle</code></a> 对象。</p></div></section><section aria-labelledby="异常"><h3 id="异常"><a href="#异常">异常</a></h3><div class="section-content"><dl> <dt id="aborterror"><a href="#aborterror"><code>AbortError</code></a> <a href="/zh-CN/docs/Web/API/DOMException"><code>DOMException</code></a></dt> <dd> <p>如果用户在没有做出选择的情况下关闭提示，或者如果用户代理认为任何选定的文件过于敏感或危险，则抛出此异常。</p> </dd> <dt id="securityerror"><a href="#securityerror"><code>SecurityError</code></a> <a href="/zh-CN/docs/Web/API/DOMException"><code>DOMException</code></a></dt> <dd> <p>如果调用被<a href="/zh-CN/docs/Web/Security/Same-origin_policy">同源策略</a>阻止，或者不是通过用户交互（例如按下按钮）调用，则抛出该异常。</p> </dd> <dt id="typeerror"><a href="/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/TypeError"><code>TypeError</code></a></dt> <dd> <p>如果无法处理接受类型，则抛出该异常，如果出现以下情况，则可能会发生这种情况：</p> <ul> <li><code>types</code> 选项中任何项目的 <code>accept</code> 选项的任何键字符串都无法解析为有效的 MIME 类型。</li> <li><code>types</code> 选项中任何项目的 <code>accept</code> 选项的任何值字符串都是无效的，例如，如果它不以 <code>.</code> 开头，或者它以 <code>.</code> 结尾，或者它包含任何无效的值码点且长度大于 16。</li> <li><code>types</code> 选项为空，<code>excludeAcceptAllOption</code> 选项为 <code>true</code>。</li> </ul> </dd> </dl></div></section><section aria-labelledby="安全性"><h2 id="安全性"><a href="#安全性">安全性</a></h2><div class="section-content"><p><a href="/en-US/docs/Web/Security/User_activation" class="only-in-en-us" title="此页面目前仅提供英文版本">瞬态用户激活</a>是必需的。用户必须与页面或 UI 元素进行交互才能使该特性正常运行。</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>以下函数可以显示一个文件选择器，并突出显示文本文件类型以供选择。</p> <div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>async function getNewFileHandle() { const opts = { types: [ { description: "Text file", accept: { "text/plain": [".txt"] }, }, ], }; return await window.showSaveFilePicker(opts); } </code></pre></div></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://wicg.github.io/file-system-access/#api-showsavefilepicker">File System Access <br/><small># api-showsavefilepicker</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="/zh-CN/docs/Web/API/File_System_API">文件系统 API</a></li> <li><a href="https://developer.chrome.google.cn/docs/capabilities/web-apis/file-system-access" class="external" target="_blank">文件系统访问 API：简化对本地文件的访问</a></li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" width="162" height="162" viewBox="0 0 162 162" fill="none" role="none"><mask id="b" fill="#fff"><path d="M97.203 47.04c8.113-7.886 18.004-13.871 28.906-17.492a78 78 0 0 1 33.969-3.39c11.443 1.39 22.401 5.295 32.024 11.411s17.656 14.28 23.476 23.86c5.819 9.579 9.269 20.318 10.083 31.385a69.85 69.85 0 0 1-5.387 32.44c-4.358 10.272-11.115 19.443-19.747 26.801-8.632 7.359-18.908 12.709-30.034 15.637l-6.17-21.698c7.666-2.017 14.746-5.703 20.694-10.773 5.948-5.071 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href=\"/zh-CN/docs/Web/API/Window/closed\"><code>closed</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/console\"><code>console</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/cookieStore\"><code>cookieStore</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/Window/credentialless\"><code>credentialless</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/Window/crossOriginIsolated\"><code>crossOriginIsolated</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/crypto\"><code>crypto</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/customElements\"><code>customElements</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/devicePixelRatio\"><code>devicePixelRatio</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/document\"><code>document</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/documentPictureInPicture\"><code>documentPictureInPicture</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/event\"><code>event</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/external\"><code>external</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/fence\"><code>fence</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/frameElement\"><code>frameElement</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/frames\"><code>frames</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/fullScreen\"><code>fullScreen</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/history\"><code>history</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/indexedDB\"><code>indexedDB</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/innerHeight\"><code>innerHeight</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/innerWidth\"><code>innerWidth</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/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/Window/launchQueue\"><code>launchQueue</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/Window/length\"><code>length</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/localStorage\"><code>localStorage</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/location\"><code>location</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/locationbar\"><code>locationbar</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/menubar\"><code>menubar</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/mozInnerScreenX\"><code>mozInnerScreenX</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/mozInnerScreenY\"><code>mozInnerScreenY</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/name\"><code>name</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/navigation\"><code>navigation</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/navigator\"><code>navigator</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/opener\"><code>opener</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/Window/orientation\"><code>orientation</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/Window/origin\"><code>origin</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/Window/originAgentCluster\"><code>originAgentCluster</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/Window/outerHeight\"><code>outerHeight</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/outerWidth\"><code>outerWidth</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/parent\"><code>parent</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/performance\"><code>performance</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/personalbar\"><code>personalbar</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/Window/scheduler\"><code>scheduler</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/screen\"><code>screen</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/screenLeft\"><code>screenLeft</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/screenTop\"><code>screenTop</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/screenX\"><code>screenX</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/screenY\"><code>screenY</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollbars\"><code>scrollbars</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollMaxX\"><code>scrollMaxX</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollMaxY\"><code>scrollMaxY</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollX\"><code>scrollX</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollY\"><code>scrollY</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/self\"><code>self</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/sessionStorage\"><code>sessionStorage</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/Window/sharedStorage\"><code>sharedStorage</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></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/Window/speechSynthesis\"><code>speechSynthesis</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/Window/status\"><code>status</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/Window/statusbar\"><code>statusbar</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/toolbar\"><code>toolbar</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/top\"><code>top</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/trustedTypes\"><code>trustedTypes</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/visualViewport\"><code>visualViewport</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/window\"><code>window</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/Window/alert\"><code>alert()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/atob\"><code>atob()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/back\"><code>back()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/blur\"><code>blur()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/btoa\"><code>btoa()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/cancelAnimationFrame\"><code>cancelAnimationFrame()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/cancelIdleCallback\"><code>cancelIdleCallback()</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/Window/captureEvents\"><code>captureEvents()</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/Window/clearImmediate\"><code>clearImmediate()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/clearInterval\"><code>clearInterval()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/clearTimeout\"><code>clearTimeout()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/close\"><code>close()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/confirm\"><code>confirm()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/createImageBitmap\"><code>createImageBitmap()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/dump\"><code>dump()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/fetch\"><code>fetch()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/find\"><code>find()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/focus\"><code>focus()</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/Window/forward\"><code>forward()</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/Window/getComputedStyle\"><code>getComputedStyle()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/getDefaultComputedStyle\"><code>getDefaultComputedStyle()</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/Window/getScreenDetails\"><code>getScreenDetails()</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/Window/getSelection\"><code>getSelection()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/matchMedia\"><code>matchMedia()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/moveBy\"><code>moveBy()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/moveTo\"><code>moveTo()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/open\"><code>open()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/postMessage\"><code>postMessage()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/print\"><code>print()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/prompt\"><code>prompt()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/queryLocalFonts\"><code>queryLocalFonts()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/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/Window/releaseEvents\"><code>releaseEvents()</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/Window/reportError\"><code>reportError()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/requestAnimationFrame\"><code>requestAnimationFrame()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/requestFileSystem\"><code>requestFileSystem()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/requestIdleCallback\"><code>requestIdleCallback()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/resizeBy\"><code>resizeBy()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/resizeTo\"><code>resizeTo()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scroll\"><code>scroll()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollBy\"><code>scrollBy()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollByLines\"><code>scrollByLines()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollByPages\"><code>scrollByPages()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/scrollTo\"><code>scrollTo()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/setImmediate\"><code>setImmediate()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/setInterval\"><code>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/Window/setResizable\"><code>setResizable()</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/Window/setTimeout\"><code>setTimeout()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/showDirectoryPicker\"><code>showDirectoryPicker()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/showModalDialog\"><code>showModalDialog()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/showOpenFilePicker\"><code>showOpenFilePicker()</code></a></li><li><em><code>showSaveFilePicker()</code> <abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></em></li><li><a href=\"/zh-CN/docs/Web/API/Window/sizeToContent\"><code>sizeToContent()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/stop\"><code>stop()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/structuredClone\"><code>structuredClone()</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/Window/webkitConvertPointFromNodeToPage\"><code>webkitConvertPointFromNodeToPage()</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 class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/Window/webkitConvertPointFromPageToNode\"><code>webkitConvertPointFromPageToNode()</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></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>事件</summary><ol><li><a href=\"/zh-CN/docs/Web/API/Window/afterprint_event\"><code>afterprint</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/appinstalled_event\"><code>appinstalled</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/beforeinstallprompt_event\"><code>beforeinstallprompt</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/beforeprint_event\"><code>beforeprint</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/beforeunload_event\"><code>beforeunload</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/blur_event\"><code>blur</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/copy_event\"><code>copy</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/cut_event\"><code>cut</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/devicemotion_event\"><code>devicemotion</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/deviceorientation_event\"><code>deviceorientation</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/Window/deviceorientationabsolute_event\"><code>deviceorientationabsolute</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/error_event\"><code>error</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/focus_event\"><code>focus</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/gamepadconnected_event\"><code>gamepadconnected</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/Window/gamepaddisconnected_event\"><code>gamepaddisconnected</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/hashchange_event\"><code>hashchange</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/languagechange_event\"><code>languagechange</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/load_event\"><code>load</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/message_event\"><code>message</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/messageerror_event\"><code>messageerror</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/offline_event\"><code>offline</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/online_event\"><code>online</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/orientationchange_event\"><code>orientationchange</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/pagehide_event\"><code>pagehide</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/Window/pagereveal_event\"><code>pagereveal</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/pageshow_event\"><code>pageshow</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/Window/pageswap_event\"><code>pageswap</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/paste_event\"><code>paste</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/popstate_event\"><code>popstate</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/rejectionhandled_event\"><code>rejectionhandled</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/resize_event\"><code>resize</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/Window/scrollsnapchange_event\"><code>scrollsnapchange</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></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/Window/scrollsnapchanging_event\"><code>scrollsnapchanging</code></a><abbr class=\"icon icon-experimental\" title=\"实验性。预期行为可能会在未来发生变更。\">\n <span class=\"visually-hidden\">实验性</span>\n</abbr></li><li><a href=\"/zh-CN/docs/Web/API/Window/storage_event\"><code>storage</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/unhandledrejection_event\"><code>unhandledrejection</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/unload_event\"><code>unload</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/Window/vrdisplayactivate_event\"><code>vrdisplayactivate</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 class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/Window/vrdisplayconnect_event\"><code>vrdisplayconnect</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 class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/Window/vrdisplaydeactivate_event\"><code>vrdisplaydeactivate</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 class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/Window/vrdisplaydisconnect_event\"><code>vrdisplaydisconnect</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 class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\" href=\"/en-US/docs/Web/API/Window/vrdisplaypresentchange_event\"><code>vrdisplaypresentchange</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></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>File System API 的相关页面</summary><ol><li><a href=\"/zh-CN/docs/Web/API/DataTransferItem/getAsFileSystemHandle\"><code>DataTransferItem.getAsFileSystemHandle()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/FileSystemDirectoryHandle\"><code>FileSystemDirectoryHandle</code></a></li><li><a href=\"/zh-CN/docs/Web/API/FileSystemFileHandle\"><code>FileSystemFileHandle</code></a></li><li><a href=\"/zh-CN/docs/Web/API/FileSystemHandle\"><code>FileSystemHandle</code></a></li><li><a href=\"/zh-CN/docs/Web/API/FileSystemSyncAccessHandle\"><code>FileSystemSyncAccessHandle</code></a></li><li><a href=\"/zh-CN/docs/Web/API/FileSystemWritableFileStream\"><code>FileSystemWritableFileStream</code></a></li><li><a href=\"/zh-CN/docs/Web/API/StorageManager/getDirectory\"><code>StorageManager.getDirectory()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/showDirectoryPicker\"><code>Window.showDirectoryPicker()</code></a></li><li><a href=\"/zh-CN/docs/Web/API/Window/showOpenFilePicker\"><code>Window.showOpenFilePicker()</code></a></li></ol></details></li></ol>","sidebarMacro":"APIRef","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<div class=\"notecard secure\"><p><strong>安全上下文:</strong> 此项功能仅在一些<a href=\"#浏览器兼容性\">支持的浏览器</a>的<a href=\"/zh-CN/docs/Web/Security/Secure_Contexts\">安全上下文</a>（HTTPS）中可用。</p></div><div class=\"notecard experimental\"><p><strong>实验性:</strong> <strong>这是一项<a href=\"/zh-CN/docs/MDN/Writing_guidelines/Experimental_deprecated_obsolete#实验性\">实验性技术</a></strong><br>在将其用于生产之前，请仔细检查<a href=\"#浏览器兼容性\">浏览器兼容性表格</a>。</p></div>\n<p><a href=\"/zh-CN/docs/Web/API/Window\"><code>Window</code></a> 接口的 <strong><code>showSaveFilePicker()</code></strong> 方法用于显示一个文件选择器，以允许用户保存一个文件。可以选择一个已有文件覆盖保存，也可以输入名字新建一个文件。</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>showSaveFilePicker()\n</code></pre></div>"}},{"type":"prose","value":{"id":"参数","title":"参数","isH3":true,"content":"<dl>\n <dt id=\"options\"><a href=\"#options\"><code>options</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>选项对象，包含以下属性：</p>\n <dl>\n <dt id=\"excludeacceptalloption\"><a href=\"#excludeacceptalloption\"><code>excludeAcceptAllOption</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>布尔值，默认为 <code>false</code>。默认情况下，选择器应包含一个不应用任何文件类型过滤器的选项（通过下面的类型选项启动）。将此选项设置为 <code>true</code> 意味着该选项<em>不</em>可用。</p>\n </dd>\n <dt id=\"id\"><a href=\"#id\"><code>id</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>通过指定 ID，浏览器可以为不同的 ID 记住不同的目录。如果相同的 ID 用于另一个选择器，则该选择器将在同一目录中打开。</p>\n </dd>\n <dt id=\"startin\"><a href=\"#startin\"><code>startIn</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>一个 <code>FileSystemHandle</code> 对象或一个众所周知的目录（<code>\"desktop\"</code>、<code>\"documents\"</code>、<code>\"downloads\"</code>、<code>\"music\"</code>、<code>\"pictures\"</code> 或 <code>\"videos\"</code>）以指定打开选择器的起始目录。</p>\n </dd>\n <dt id=\"suggestedname\"><a href=\"#suggestedname\"><code>suggestedName</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>一个<a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/String\">字符串</a>。建议的文件名。</p>\n </dd>\n <dt id=\"types\"><a href=\"#types\"><code>types</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>允许选择的文件类型的<a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array\">数组</a>。每个项目都是一个具有以下选项的对象：</p>\n <dl>\n <dt id=\"description\"><a href=\"#description\"><code>description</code></a> <span class=\"badge inline optional\">可选</span></dt>\n <dd>\n <p>允许的文件类型类别的可选描述。默认为空字符串。</p>\n </dd>\n <dt id=\"accept\"><a href=\"#accept\"><code>accept</code></a></dt>\n <dd>\n <p>一个 <a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Object\"><code>Object</code></a>，其键设置为 <a href=\"/zh-CN/docs/Web/HTTP/MIME_types/Common_types\">MIME 类型</a>，值设置为文件扩展名的<a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array\">数组</a>（参见下面的示例）。</p>\n </dd>\n </dl>\n </dd>\n </dl>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"返回值","title":"返回值","isH3":true,"content":"<p>一个 <a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Promise\"><code>Promise</code></a> 对象，会兑现一个 <a href=\"/zh-CN/docs/Web/API/FileSystemFileHandle\"><code>FileSystemFileHandle</code></a> 对象。</p>"}},{"type":"prose","value":{"id":"异常","title":"异常","isH3":true,"content":"<dl>\n <dt id=\"aborterror\"><a href=\"#aborterror\"><code>AbortError</code></a> <a href=\"/zh-CN/docs/Web/API/DOMException\"><code>DOMException</code></a></dt>\n <dd>\n <p>如果用户在没有做出选择的情况下关闭提示，或者如果用户代理认为任何选定的文件过于敏感或危险，则抛出此异常。</p>\n </dd>\n <dt id=\"securityerror\"><a href=\"#securityerror\"><code>SecurityError</code></a> <a href=\"/zh-CN/docs/Web/API/DOMException\"><code>DOMException</code></a></dt>\n <dd>\n <p>如果调用被<a href=\"/zh-CN/docs/Web/Security/Same-origin_policy\">同源策略</a>阻止，或者不是通过用户交互（例如按下按钮）调用，则抛出该异常。</p>\n </dd>\n <dt id=\"typeerror\"><a href=\"/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/TypeError\"><code>TypeError</code></a></dt>\n <dd>\n <p>如果无法处理接受类型，则抛出该异常，如果出现以下情况，则可能会发生这种情况：</p>\n <ul>\n <li><code>types</code> 选项中任何项目的 <code>accept</code> 选项的任何键字符串都无法解析为有效的 MIME 类型。</li>\n <li><code>types</code> 选项中任何项目的 <code>accept</code> 选项的任何值字符串都是无效的，例如，如果它不以 <code>.</code> 开头，或者它以 <code>.</code> 结尾，或者它包含任何无效的值码点且长度大于 16。</li>\n <li><code>types</code> 选项为空，<code>excludeAcceptAllOption</code> 选项为 <code>true</code>。</li>\n </ul>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"安全性","title":"安全性","isH3":false,"content":"<p><a href=\"/en-US/docs/Web/Security/User_activation\" class=\"only-in-en-us\" title=\"此页面目前仅提供英文版本\">瞬态用户激活</a>是必需的。用户必须与页面或 UI 元素进行交互才能使该特性正常运行。</p>"}},{"type":"prose","value":{"id":"示例","title":"示例","isH3":false,"content":"<p>以下函数可以显示一个文件选择器，并突出显示文本文件类型以供选择。</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>async function getNewFileHandle() {\n const opts = {\n types: [\n {\n description: \"Text file\",\n accept: { \"text/plain\": [\".txt\"] },\n },\n ],\n };\n return await window.showSaveFilePicker(opts);\n}\n</code></pre></div>"}},{"type":"specifications","value":{"title":"规范","id":"规范","isH3":false,"specifications":[{"bcdSpecificationURL":"https://wicg.github.io/file-system-access/#api-showsavefilepicker","title":"File System Access"}],"query":"api.Window.showSaveFilePicker"}},{"type":"browser_compatibility","value":{"title":"浏览器兼容性","id":"浏览器兼容性","isH3":false,"query":"api.Window.showSaveFilePicker"}},{"type":"prose","value":{"id":"参见","title":"参见","isH3":false,"content":"<ul>\n <li><a href=\"/zh-CN/docs/Web/API/File_System_API\">文件系统 API</a></li>\n <li><a href=\"https://developer.chrome.google.cn/docs/capabilities/web-apis/file-system-access\" class=\"external\" target=\"_blank\">文件系统访问 API：简化对本地文件的访问</a></li>\n</ul>"}}],"toc":[{"text":"语法","id":"语法"},{"text":"安全性","id":"安全性"},{"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":"Window 接口的 showSaveFilePicker() 方法用于显示一个文件选择器，以允许用户保存一个文件。可以选择一个已有文件覆盖保存，也可以输入名字新建一个文件。","popularity":0.0029,"modified":"2024-10-02T07:38:35.000Z","other_translations":[{"locale":"de","title":"Fenster: showSaveFilePicker()-Methode","native":"Deutsch"},{"locale":"en-US","title":"Window: showSaveFilePicker() method","native":"English (US)"},{"locale":"ja","title":"Window.showSaveFilePicker()","native":"日本語"},{"locale":"ko","title":"Window: showSaveFilePicker() 메서드","native":"한국어"}],"pageType":"unknown","source":{"folder":"zh-cn/web/api/window/showsavefilepicker","github_url":"https://github.com/mdn/translated-content/blob/main/files/zh-cn/web/api/window/showsavefilepicker/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/1885569c6dab351ce23d960425846580aa2fa994","filename":"index.md"},"short_title":"Window：showSaveFilePicker() 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/Window","title":"Window"},{"uri":"/zh-CN/docs/Web/API/Window/showSaveFilePicker","title":"Window：showSaveFilePicker() 方法"}],"pageTitle":"Window：showSaveFilePicker() 方法 - Web API | MDN","noIndexing":false}}</script></body></html>