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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/HTMLFrameSetElement" 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="fr" href="/fr/docs/Web/API/HTMLFrameSetElement" class="button submenu-item"><span>Français</span></a></li><li class=" "><a data-locale="ja" href="/ja/docs/Web/API/HTMLFrameSetElement" class="button submenu-item"><span>日本語</span></a></li><li class=" "><a data-locale="zh-CN" href="/zh-CN/docs/Web/API/HTMLFrameSetElement" class="button submenu-item"><span>中文 (简体)</span></a></li></ul></div></div></li></ul></div></div></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">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#instance_properties">Instance properties</a></li><li class="document-toc-item "><a class="document-toc-link" href="#instance_methods">Instance methods</a></li><li class="document-toc-item "><a class="document-toc-link" href="#event_handlers">Event handlers</a></li><li class="document-toc-item "><a class="document-toc-link" href="#specifications">Specifications</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser_compatibility">Browser compatibility</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</a></li></ul></section></div></div><div class="sidebar-body"><ol><li class="section"><a href="/en-US/docs/Web/API/HTML_DOM_API">HTML DOM API</a></li><li class="section"><em><a href="/en-US/docs/Web/API/HTMLFrameSetElement" aria-current="page"><code>HTMLFrameSetElement</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></em></li><li class="toggle"><details open=""><summary>Inheritance</summary><ol><li><a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></li><li><a href="/en-US/docs/Web/API/Element"><code>Element</code></a></li><li><a href="/en-US/docs/Web/API/Node"><code>Node</code></a></li><li><a href="/en-US/docs/Web/API/EventTarget"><code>EventTarget</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>Related pages for HTML DOM</summary><ol><li><a href="/en-US/docs/Web/API/BeforeUnloadEvent"><code>BeforeUnloadEvent</code></a></li><li><a href="/en-US/docs/Web/API/DOMStringMap"><code>DOMStringMap</code></a></li><li><a href="/en-US/docs/Web/API/ErrorEvent"><code>ErrorEvent</code></a></li><li><a href="/en-US/docs/Web/API/HTMLAnchorElement"><code>HTMLAnchorElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLAreaElement"><code>HTMLAreaElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLAudioElement"><code>HTMLAudioElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLBRElement"><code>HTMLBRElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLBaseElement"><code>HTMLBaseElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLBodyElement"><code>HTMLBodyElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLButtonElement"><code>HTMLButtonElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLCanvasElement"><code>HTMLCanvasElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDListElement"><code>HTMLDListElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDataElement"><code>HTMLDataElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDataListElement"><code>HTMLDataListElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDialogElement"><code>HTMLDialogElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDivElement"><code>HTMLDivElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLDocument"><code>HTMLDocument</code></a></li><li><a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLEmbedElement"><code>HTMLEmbedElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLFieldSetElement"><code>HTMLFieldSetElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLFormControlsCollection"><code>HTMLFormControlsCollection</code></a></li><li><a href="/en-US/docs/Web/API/HTMLFormElement"><code>HTMLFormElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLHRElement"><code>HTMLHRElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLHeadElement"><code>HTMLHeadElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLHeadingElement"><code>HTMLHeadingElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLHtmlElement"><code>HTMLHtmlElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLIFrameElement"><code>HTMLIFrameElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLImageElement"><code>HTMLImageElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLInputElement"><code>HTMLInputElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLLIElement"><code>HTMLLIElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLLabelElement"><code>HTMLLabelElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLLegendElement"><code>HTMLLegendElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLLinkElement"><code>HTMLLinkElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMapElement"><code>HTMLMapElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMediaElement"><code>HTMLMediaElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMenuElement"><code>HTMLMenuElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMetaElement"><code>HTMLMetaElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLMeterElement"><code>HTMLMeterElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLModElement"><code>HTMLModElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLOListElement"><code>HTMLOListElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLObjectElement"><code>HTMLObjectElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLOptGroupElement"><code>HTMLOptGroupElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLOptionElement"><code>HTMLOptionElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLOptionsCollection"><code>HTMLOptionsCollection</code></a></li><li><a href="/en-US/docs/Web/API/HTMLOutputElement"><code>HTMLOutputElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLParagraphElement"><code>HTMLParagraphElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLPictureElement"><code>HTMLPictureElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLPreElement"><code>HTMLPreElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLProgressElement"><code>HTMLProgressElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLQuoteElement"><code>HTMLQuoteElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLScriptElement"><code>HTMLScriptElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLSelectElement"><code>HTMLSelectElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLSourceElement"><code>HTMLSourceElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLSpanElement"><code>HTMLSpanElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLStyleElement"><code>HTMLStyleElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableCaptionElement"><code>HTMLTableCaptionElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableCellElement"><code>HTMLTableCellElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableColElement"><code>HTMLTableColElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableElement"><code>HTMLTableElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableRowElement"><code>HTMLTableRowElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTableSectionElement"><code>HTMLTableSectionElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTemplateElement"><code>HTMLTemplateElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTextAreaElement"><code>HTMLTextAreaElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTimeElement"><code>HTMLTimeElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTitleElement"><code>HTMLTitleElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLTrackElement"><code>HTMLTrackElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLUListElement"><code>HTMLUListElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLUnknownElement"><code>HTMLUnknownElement</code></a></li><li><a href="/en-US/docs/Web/API/HTMLVideoElement"><code>HTMLVideoElement</code></a></li><li><a href="/en-US/docs/Web/API/HashChangeEvent"><code>HashChangeEvent</code></a></li><li><a href="/en-US/docs/Web/API/History"><code>History</code></a></li><li><a href="/en-US/docs/Web/API/ImageData"><code>ImageData</code></a></li><li><a href="/en-US/docs/Web/API/Location"><code>Location</code></a></li><li><a href="/en-US/docs/Web/API/MessageChannel"><code>MessageChannel</code></a></li><li><a href="/en-US/docs/Web/API/MessageEvent"><code>MessageEvent</code></a></li><li><a href="/en-US/docs/Web/API/MessagePort"><code>MessagePort</code></a></li><li><a href="/en-US/docs/Web/API/Navigator"><code>Navigator</code></a></li><li><a href="/en-US/docs/Web/API/PageRevealEvent"><code>PageRevealEvent</code></a></li><li><a href="/en-US/docs/Web/API/PageSwapEvent"><code>PageSwapEvent</code></a></li><li><a href="/en-US/docs/Web/API/PageTransitionEvent"><code>PageTransitionEvent</code></a></li><li><a href="/en-US/docs/Web/API/Plugin"><code>Plugin</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/PluginArray"><code>PluginArray</code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></li><li><a href="/en-US/docs/Web/API/PromiseRejectionEvent"><code>PromiseRejectionEvent</code></a></li><li><a href="/en-US/docs/Web/API/RadioNodeList"><code>RadioNodeList</code></a></li><li><a href="/en-US/docs/Web/API/UserActivation"><code>UserActivation</code></a></li><li><a href="/en-US/docs/Web/API/ValidityState"><code>ValidityState</code></a></li><li><a href="/en-US/docs/Web/API/Window"><code>Window</code></a></li><li><a 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">In this article</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#instance_properties">Instance properties</a></li><li class="document-toc-item "><a class="document-toc-link" href="#instance_methods">Instance methods</a></li><li class="document-toc-item "><a class="document-toc-link" href="#event_handlers">Event handlers</a></li><li class="document-toc-item "><a class="document-toc-link" href="#specifications">Specifications</a></li><li class="document-toc-item "><a class="document-toc-link" href="#browser_compatibility">Browser compatibility</a></li><li class="document-toc-item "><a class="document-toc-link" href="#see_also">See also</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="en-US"><header><h1>HTMLFrameSetElement</h1></header><div class="section-content"><div class="notecard deprecated"><p><strong>Deprecated:</strong> This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the <a href="#browser_compatibility">compatibility table</a> at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.</p></div> <p>The <strong><code>HTMLFrameSetElement</code></strong> interface provides special properties (beyond those of the regular <a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a> interface they also inherit) for manipulating <a href="/en-US/docs/Web/HTML/Element/frameset"><code><frameset></code></a> elements.</p><svg viewBox="-1 -1 650 42" preserveAspectRatio="xMinYMin meet"> <a style="text-decoration: none;" href="/en-US/docs/Web/API/EventTarget"> <rect x="0" y="0" width="88" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="44" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> EventTarget </text> </a> <line x1="88" y1="14" x2="118" y2="14" stroke="#D4DDE4"></line> <polyline points="88,14 98,9 98,19 88,14" stroke="#D4DDE4" fill="#fff"></polyline> <a style="text-decoration: none;" href="/en-US/docs/Web/API/Node"> <rect x="118" y="0" width="75" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="155.5" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> Node </text> </a> <line x1="193" y1="14" x2="223" y2="14" stroke="#D4DDE4"></line> <polyline points="193,14 203,9 203,19 193,14" stroke="#D4DDE4" fill="#fff"></polyline> <a style="text-decoration: none;" href="/en-US/docs/Web/API/Element"> <rect x="223" y="0" width="75" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="260.5" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> Element </text> </a> <line x1="298" y1="14" x2="328" y2="14" stroke="#D4DDE4"></line> <polyline points="298,14 308,9 308,19 298,14" stroke="#D4DDE4" fill="#fff"></polyline> <a style="text-decoration: none;" href="/en-US/docs/Web/API/HTMLElement"> <rect x="328" y="0" width="88" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="372" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> HTMLElement </text> </a> <line x1="416" y1="14" x2="446" y2="14" stroke="#D4DDE4"></line> <polyline points="416,14 426,9 426,19 416,14" stroke="#D4DDE4" fill="#fff"></polyline> <a style="text-decoration: none;" href="/en-US/docs/Web/API/HTMLFrameSetElement" aria-current="page"> <rect x="446" y="0" width="152" height="25" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="522" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> HTMLFrameSetElement </text> </a></svg></div><section aria-labelledby="instance_properties"><h2 id="instance_properties"><a href="#instance_properties">Instance properties</a></h2><div class="section-content"><p><em>Inherits properties from its parent, <a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a>.</em></p> <dl> <dt id="htmlframesetelement.cols"><a class="page-not-created" title="The documentation about this has not yet been written; please consider contributing!"><code>HTMLFrameSetElement.cols</code></a> <abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></dt> <dd> <p>A string structured as a comma-separated list specifying the width of each column inside a frameset.</p> </dd> <dt id="htmlframesetelement.rows"><a class="page-not-created" title="The documentation about this has not yet been written; please consider contributing!"><code>HTMLFrameSetElement.rows</code></a> <abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">Deprecated</span> </abbr></dt> <dd> <p>A string structured as a comma-separated list specifying the height of each column inside a frameset.</p> </dd> </dl></div></section><section aria-labelledby="instance_methods"><h2 id="instance_methods"><a href="#instance_methods">Instance methods</a></h2><div class="section-content"><p><em>No specific method; inherits methods from its parent, <a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a>.</em></p></div></section><section aria-labelledby="event_handlers"><h2 id="event_handlers"><a href="#event_handlers">Event handlers</a></h2><div class="section-content"><p>The <a href="/en-US/docs/Web/API/HTMLElement"><code>HTMLElement</code></a> events are inherited.</p> <p>The following <a href="/en-US/docs/Web/API/Window"><code>Window</code></a> <code>onXYZ</code> event handler properties are also available as aliases targeting the <code>window</code> object. However, it is advised to listen to them on the <code>window</code> object directly rather than on <code>HTMLFrameSetElement</code>.</p> <div class="notecard note"> <p><strong>Note:</strong> Using <code>addEventListener()</code> on <code>HTMLFrameSetElement</code> will not work for the <code>onXYZ</code> event handlers listed below. Listen to the events on the <a href="/en-US/docs/Web/API/Window"><code>window</code></a> object instead.</p> </div> <dl> <dt id="htmlframesetelement.onafterprint"><a href="/en-US/docs/Web/API/Window/afterprint_event" title="HTMLFrameSetElement.onafterprint"><code>HTMLFrameSetElement.onafterprint</code></a></dt> <dd> <p>Fired after the associated document has started printing or the print preview has been closed.</p> </dd> <dt id="htmlframesetelement.onbeforeprint"><a href="/en-US/docs/Web/API/Window/beforeprint_event" title="HTMLFrameSetElement.onbeforeprint"><code>HTMLFrameSetElement.onbeforeprint</code></a></dt> <dd> <p>Fired when the associated document is about to be printed or previewed for printing.</p> </dd> <dt id="htmlframesetelement.onbeforeunload"><a href="/en-US/docs/Web/API/Window/beforeunload_event" title="HTMLFrameSetElement.onbeforeunload"><code>HTMLFrameSetElement.onbeforeunload</code></a></dt> <dd> <p>Fired when the window, the document and its resources are about to be unloaded.</p> </dd> <dt id="htmlframesetelement.ongamepadconnected"><a href="/en-US/docs/Web/API/Window/gamepadconnected_event" title="HTMLFrameSetElement.ongamepadconnected"><code>HTMLFrameSetElement.ongamepadconnected</code></a></dt> <dd> <p>Fired when the browser detects that a gamepad has been connected or the first time a button/axis of the gamepad is used.</p> </dd> <dt id="htmlframesetelement.ongamepaddisconnected"><a href="/en-US/docs/Web/API/Window/gamepaddisconnected_event" title="HTMLFrameSetElement.ongamepaddisconnected"><code>HTMLFrameSetElement.ongamepaddisconnected</code></a></dt> <dd> <p>Fired when the browser detects that a gamepad has been disconnected.</p> </dd> <dt id="htmlframesetelement.onhashchange"><a href="/en-US/docs/Web/API/Window/hashchange_event" title="HTMLFrameSetElement.onhashchange"><code>HTMLFrameSetElement.onhashchange</code></a></dt> <dd> <p>Fired when the fragment identifier of the URL has changed (the part of the URL beginning with and following the <code>#</code> symbol).</p> </dd> <dt id="htmlframesetelement.onlanguagechange"><a href="/en-US/docs/Web/API/Window/languagechange_event" title="HTMLFrameSetElement.onlanguagechange"><code>HTMLFrameSetElement.onlanguagechange</code></a></dt> <dd> <p>Fired when the user's preferred language changes.</p> </dd> <dt id="htmlframesetelement.onmessage"><a href="/en-US/docs/Web/API/Window/message_event" title="HTMLFrameSetElement.onmessage"><code>HTMLFrameSetElement.onmessage</code></a></dt> <dd> <p>Fired when the window receives a message, for example from a call to <a href="/en-US/docs/Web/API/Window/postMessage"><code>Window.postMessage()</code></a> from another browsing context.</p> </dd> <dt id="htmlframesetelement.onmessageerror"><a href="/en-US/docs/Web/API/Window/messageerror_event" title="HTMLFrameSetElement.onmessageerror"><code>HTMLFrameSetElement.onmessageerror</code></a></dt> <dd> <p>Fired when the window receives a message that can't be deserialized.</p> </dd> <dt id="htmlframesetelement.onoffline"><a href="/en-US/docs/Web/API/Window/offline_event" title="HTMLFrameSetElement.onoffline"><code>HTMLFrameSetElement.onoffline</code></a></dt> <dd> <p>Fired when the browser has lost access to the network and the value of <a href="/en-US/docs/Web/API/Navigator/onLine"><code>Navigator.onLine</code></a> switches to <code>false</code>.</p> </dd> <dt id="htmlframesetelement.ononline"><a href="/en-US/docs/Web/API/Window/online_event" title="HTMLFrameSetElement.ononline"><code>HTMLFrameSetElement.ononline</code></a></dt> <dd> <p>Fired when the browser has gained access to the network and the value of <a href="/en-US/docs/Web/API/Navigator/onLine"><code>Navigator.onLine</code></a> switches to <code>true</code>.</p> </dd> <dt id="htmlframesetelement.onpagehide"><a href="/en-US/docs/Web/API/Window/pagehide_event" title="HTMLFrameSetElement.onpagehide"><code>HTMLFrameSetElement.onpagehide</code></a></dt> <dd> <p>Fired when the browser hides the current page in the process of presenting a different page from the session's history.</p> </dd> <dt id="htmlframesetelement.onpageshow"><a href="/en-US/docs/Web/API/Window/pageshow_event" title="HTMLFrameSetElement.onpageshow"><code>HTMLFrameSetElement.onpageshow</code></a></dt> <dd> <p>Fired when the browser displays the window's document due to navigation.</p> </dd> <dt id="htmlframesetelement.onpopstate"><a href="/en-US/docs/Web/API/Window/popstate_event" title="HTMLFrameSetElement.onpopstate"><code>HTMLFrameSetElement.onpopstate</code></a></dt> <dd> <p>Fired when the active history entry changes while the user navigates the session history.</p> </dd> <dt id="htmlframesetelement.onrejectionhandled"><a href="/en-US/docs/Web/API/Window/rejectionhandled_event" title="HTMLFrameSetElement.onrejectionhandled"><code>HTMLFrameSetElement.onrejectionhandled</code></a></dt> <dd> <p>Fired whenever a JavaScript <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise"><code>Promise</code></a> is rejected and the rejection has been handled.</p> </dd> <dt id="htmlframesetelement.onstorage"><a href="/en-US/docs/Web/API/Window/storage_event" title="HTMLFrameSetElement.onstorage"><code>HTMLFrameSetElement.onstorage</code></a></dt> <dd> <p>Fired when a storage area (<code>localStorage</code>) has been modified in the context of another document.</p> </dd> <dt id="htmlframesetelement.onunhandledrejection"><a href="/en-US/docs/Web/API/Window/unhandledrejection_event" title="HTMLFrameSetElement.onunhandledrejection"><code>HTMLFrameSetElement.onunhandledrejection</code></a></dt> <dd> <p>Fired whenever a <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise"><code>Promise</code></a> is rejected but the rejection was not handled.</p> </dd> <dt id="htmlframesetelement.onunload"><a href="/en-US/docs/Web/API/Window/unload_event" title="HTMLFrameSetElement.onunload"><code>HTMLFrameSetElement.onunload</code></a></dt> <dd> <p>Fired when the document is being unloaded.</p> </dd> </dl></div></section><h2 id="specifications"><a href="#specifications">Specifications</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/obsolete.html#htmlframesetelement">HTML Standard <br/><small># htmlframesetelement</small></a></td></tr></tbody></table><h2 id="browser_compatibility"><a href="#browser_compatibility">Browser compatibility</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. Enable JavaScript to view data.</noscript></p><section aria-labelledby="see_also"><h2 id="see_also"><a href="#see_also">See also</a></h2><div class="section-content"><ul> <li>HTML element implementing this interface: <a href="/en-US/docs/Web/HTML/Element/frameset"><code><frameset></code></a></li> <li>The equivalent of this element outside of frames: <code>HTMLFrameSetElement</code>.</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 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Content available under <a href="/en-US/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/en-US/docs/Web/API/HTMLFrameSetElement","doc":{"isMarkdown":true,"isTranslated":false,"isActive":true,"flaws":{},"title":"HTMLFrameSetElement","mdn_url":"/en-US/docs/Web/API/HTMLFrameSetElement","locale":"en-US","native":"English (US)","browserCompat":["api.HTMLFrameSetElement"],"sidebarHTML":"<ol><li class=\"section\"><a href=\"/en-US/docs/Web/API/HTML_DOM_API\">HTML DOM API</a></li><li class=\"section\"><em><a href=\"/en-US/docs/Web/API/HTMLFrameSetElement\" aria-current=\"page\"><code>HTMLFrameSetElement</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></em></li><li class=\"toggle\"><details open=\"\"><summary>Inheritance</summary><ol><li><a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></li><li><a href=\"/en-US/docs/Web/API/Element\"><code>Element</code></a></li><li><a href=\"/en-US/docs/Web/API/Node\"><code>Node</code></a></li><li><a href=\"/en-US/docs/Web/API/EventTarget\"><code>EventTarget</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>Related pages for HTML DOM</summary><ol><li><a href=\"/en-US/docs/Web/API/BeforeUnloadEvent\"><code>BeforeUnloadEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/DOMStringMap\"><code>DOMStringMap</code></a></li><li><a href=\"/en-US/docs/Web/API/ErrorEvent\"><code>ErrorEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLAnchorElement\"><code>HTMLAnchorElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLAreaElement\"><code>HTMLAreaElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLAudioElement\"><code>HTMLAudioElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLBRElement\"><code>HTMLBRElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLBaseElement\"><code>HTMLBaseElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLBodyElement\"><code>HTMLBodyElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLButtonElement\"><code>HTMLButtonElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLCanvasElement\"><code>HTMLCanvasElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDListElement\"><code>HTMLDListElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDataElement\"><code>HTMLDataElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDataListElement\"><code>HTMLDataListElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDialogElement\"><code>HTMLDialogElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDivElement\"><code>HTMLDivElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLDocument\"><code>HTMLDocument</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLEmbedElement\"><code>HTMLEmbedElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLFieldSetElement\"><code>HTMLFieldSetElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLFormControlsCollection\"><code>HTMLFormControlsCollection</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLFormElement\"><code>HTMLFormElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLHRElement\"><code>HTMLHRElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLHeadElement\"><code>HTMLHeadElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLHeadingElement\"><code>HTMLHeadingElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLHtmlElement\"><code>HTMLHtmlElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLIFrameElement\"><code>HTMLIFrameElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLImageElement\"><code>HTMLImageElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLInputElement\"><code>HTMLInputElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLLIElement\"><code>HTMLLIElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLLabelElement\"><code>HTMLLabelElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLLegendElement\"><code>HTMLLegendElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLLinkElement\"><code>HTMLLinkElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMapElement\"><code>HTMLMapElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMediaElement\"><code>HTMLMediaElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMenuElement\"><code>HTMLMenuElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMetaElement\"><code>HTMLMetaElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLMeterElement\"><code>HTMLMeterElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLModElement\"><code>HTMLModElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLOListElement\"><code>HTMLOListElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLObjectElement\"><code>HTMLObjectElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLOptGroupElement\"><code>HTMLOptGroupElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLOptionElement\"><code>HTMLOptionElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLOptionsCollection\"><code>HTMLOptionsCollection</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLOutputElement\"><code>HTMLOutputElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLParagraphElement\"><code>HTMLParagraphElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLPictureElement\"><code>HTMLPictureElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLPreElement\"><code>HTMLPreElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLProgressElement\"><code>HTMLProgressElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLQuoteElement\"><code>HTMLQuoteElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLScriptElement\"><code>HTMLScriptElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLSelectElement\"><code>HTMLSelectElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLSourceElement\"><code>HTMLSourceElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLSpanElement\"><code>HTMLSpanElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLStyleElement\"><code>HTMLStyleElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableCaptionElement\"><code>HTMLTableCaptionElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableCellElement\"><code>HTMLTableCellElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableColElement\"><code>HTMLTableColElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableElement\"><code>HTMLTableElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableRowElement\"><code>HTMLTableRowElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTableSectionElement\"><code>HTMLTableSectionElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTemplateElement\"><code>HTMLTemplateElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTextAreaElement\"><code>HTMLTextAreaElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTimeElement\"><code>HTMLTimeElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTitleElement\"><code>HTMLTitleElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLTrackElement\"><code>HTMLTrackElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLUListElement\"><code>HTMLUListElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLUnknownElement\"><code>HTMLUnknownElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HTMLVideoElement\"><code>HTMLVideoElement</code></a></li><li><a href=\"/en-US/docs/Web/API/HashChangeEvent\"><code>HashChangeEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/History\"><code>History</code></a></li><li><a href=\"/en-US/docs/Web/API/ImageData\"><code>ImageData</code></a></li><li><a href=\"/en-US/docs/Web/API/Location\"><code>Location</code></a></li><li><a href=\"/en-US/docs/Web/API/MessageChannel\"><code>MessageChannel</code></a></li><li><a href=\"/en-US/docs/Web/API/MessageEvent\"><code>MessageEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/MessagePort\"><code>MessagePort</code></a></li><li><a href=\"/en-US/docs/Web/API/Navigator\"><code>Navigator</code></a></li><li><a href=\"/en-US/docs/Web/API/PageRevealEvent\"><code>PageRevealEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/PageSwapEvent\"><code>PageSwapEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/PageTransitionEvent\"><code>PageTransitionEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/Plugin\"><code>Plugin</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/PluginArray\"><code>PluginArray</code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></li><li><a href=\"/en-US/docs/Web/API/PromiseRejectionEvent\"><code>PromiseRejectionEvent</code></a></li><li><a href=\"/en-US/docs/Web/API/RadioNodeList\"><code>RadioNodeList</code></a></li><li><a href=\"/en-US/docs/Web/API/UserActivation\"><code>UserActivation</code></a></li><li><a href=\"/en-US/docs/Web/API/ValidityState\"><code>ValidityState</code></a></li><li><a href=\"/en-US/docs/Web/API/Window\"><code>Window</code></a></li><li><a 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 deprecated\"><p><strong>Deprecated:</strong> This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the <a href=\"#browser_compatibility\">compatibility table</a> at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.</p></div>\n<p>The <strong><code>HTMLFrameSetElement</code></strong> interface provides special properties (beyond those of the regular <a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a> interface they also inherit) for manipulating <a href=\"/en-US/docs/Web/HTML/Element/frameset\"><code><frameset></code></a> elements.</p><svg viewBox=\"-1 -1 650 42\" preserveAspectRatio=\"xMinYMin meet\">\n <a style=\"text-decoration: none;\" href=\"/en-US/docs/Web/API/EventTarget\">\n <rect x=\"0\" y=\"0\" width=\"88\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"44\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n EventTarget\n </text>\n </a>\n <line x1=\"88\" y1=\"14\" x2=\"118\" y2=\"14\" stroke=\"#D4DDE4\"></line>\n <polyline points=\"88,14 98,9 98,19 88,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline>\n <a style=\"text-decoration: none;\" href=\"/en-US/docs/Web/API/Node\">\n <rect x=\"118\" y=\"0\" width=\"75\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"155.5\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n Node\n </text>\n </a>\n <line x1=\"193\" y1=\"14\" x2=\"223\" y2=\"14\" stroke=\"#D4DDE4\"></line>\n <polyline points=\"193,14 203,9 203,19 193,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline>\n <a style=\"text-decoration: none;\" href=\"/en-US/docs/Web/API/Element\">\n <rect x=\"223\" y=\"0\" width=\"75\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"260.5\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n Element\n </text>\n </a>\n <line x1=\"298\" y1=\"14\" x2=\"328\" y2=\"14\" stroke=\"#D4DDE4\"></line>\n <polyline points=\"298,14 308,9 308,19 298,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline>\n <a style=\"text-decoration: none;\" href=\"/en-US/docs/Web/API/HTMLElement\">\n <rect x=\"328\" y=\"0\" width=\"88\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"372\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n HTMLElement\n </text>\n </a>\n <line x1=\"416\" y1=\"14\" x2=\"446\" y2=\"14\" stroke=\"#D4DDE4\"></line>\n <polyline points=\"416,14 426,9 426,19 416,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline>\n <a style=\"text-decoration: none;\" href=\"/en-US/docs/Web/API/HTMLFrameSetElement\" aria-current=\"page\">\n <rect x=\"446\" y=\"0\" width=\"152\" height=\"25\" fill=\"#F4F7F8\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"522\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n HTMLFrameSetElement\n </text>\n </a></svg>"}},{"type":"prose","value":{"id":"instance_properties","title":"Instance properties","isH3":false,"content":"<p><em>Inherits properties from its parent, <a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a>.</em></p>\n<dl>\n <dt id=\"htmlframesetelement.cols\"><a class=\"page-not-created\" title=\"The documentation about this has not yet been written; please consider contributing!\"><code>HTMLFrameSetElement.cols</code></a> <abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></dt>\n <dd>\n <p>A string structured as a comma-separated list specifying the width of each column inside a frameset.</p>\n </dd>\n <dt id=\"htmlframesetelement.rows\"><a class=\"page-not-created\" title=\"The documentation about this has not yet been written; please consider contributing!\"><code>HTMLFrameSetElement.rows</code></a> <abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">Deprecated</span>\n</abbr></dt>\n <dd>\n <p>A string structured as a comma-separated list specifying the height of each column inside a frameset.</p>\n </dd>\n</dl>"}},{"type":"prose","value":{"id":"instance_methods","title":"Instance methods","isH3":false,"content":"<p><em>No specific method; inherits methods from its parent, <a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a>.</em></p>"}},{"type":"prose","value":{"id":"event_handlers","title":"Event handlers","isH3":false,"content":"<p>The <a href=\"/en-US/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a> events are inherited.</p>\n<p>The following <a href=\"/en-US/docs/Web/API/Window\"><code>Window</code></a> <code>onXYZ</code> event handler properties are also available as aliases targeting the <code>window</code> object. However, it is advised to listen to them on the <code>window</code> object directly rather than on <code>HTMLFrameSetElement</code>.</p>\n<div class=\"notecard note\">\n <p><strong>Note:</strong> Using <code>addEventListener()</code> on <code>HTMLFrameSetElement</code> will not work for the <code>onXYZ</code> event handlers listed below. Listen to the events on the <a href=\"/en-US/docs/Web/API/Window\"><code>window</code></a> object instead.</p>\n</div>\n<dl>\n <dt id=\"htmlframesetelement.onafterprint\"><a href=\"/en-US/docs/Web/API/Window/afterprint_event\" title=\"HTMLFrameSetElement.onafterprint\"><code>HTMLFrameSetElement.onafterprint</code></a></dt>\n <dd>\n <p>Fired after the associated document has started printing or the print preview has been closed.</p>\n </dd>\n <dt id=\"htmlframesetelement.onbeforeprint\"><a href=\"/en-US/docs/Web/API/Window/beforeprint_event\" title=\"HTMLFrameSetElement.onbeforeprint\"><code>HTMLFrameSetElement.onbeforeprint</code></a></dt>\n <dd>\n <p>Fired when the associated document is about to be printed or previewed for printing.</p>\n </dd>\n <dt id=\"htmlframesetelement.onbeforeunload\"><a href=\"/en-US/docs/Web/API/Window/beforeunload_event\" title=\"HTMLFrameSetElement.onbeforeunload\"><code>HTMLFrameSetElement.onbeforeunload</code></a></dt>\n <dd>\n <p>Fired when the window, the document and its resources are about to be unloaded.</p>\n </dd>\n <dt id=\"htmlframesetelement.ongamepadconnected\"><a href=\"/en-US/docs/Web/API/Window/gamepadconnected_event\" title=\"HTMLFrameSetElement.ongamepadconnected\"><code>HTMLFrameSetElement.ongamepadconnected</code></a></dt>\n <dd>\n <p>Fired when the browser detects that a gamepad has been connected or the first time a button/axis of the gamepad is used.</p>\n </dd>\n <dt id=\"htmlframesetelement.ongamepaddisconnected\"><a href=\"/en-US/docs/Web/API/Window/gamepaddisconnected_event\" title=\"HTMLFrameSetElement.ongamepaddisconnected\"><code>HTMLFrameSetElement.ongamepaddisconnected</code></a></dt>\n <dd>\n <p>Fired when the browser detects that a gamepad has been disconnected.</p>\n </dd>\n <dt id=\"htmlframesetelement.onhashchange\"><a href=\"/en-US/docs/Web/API/Window/hashchange_event\" title=\"HTMLFrameSetElement.onhashchange\"><code>HTMLFrameSetElement.onhashchange</code></a></dt>\n <dd>\n <p>Fired when the fragment identifier of the URL has changed (the part of the URL beginning with and following the <code>#</code> symbol).</p>\n </dd>\n <dt id=\"htmlframesetelement.onlanguagechange\"><a href=\"/en-US/docs/Web/API/Window/languagechange_event\" title=\"HTMLFrameSetElement.onlanguagechange\"><code>HTMLFrameSetElement.onlanguagechange</code></a></dt>\n <dd>\n <p>Fired when the user's preferred language changes.</p>\n </dd>\n <dt id=\"htmlframesetelement.onmessage\"><a href=\"/en-US/docs/Web/API/Window/message_event\" title=\"HTMLFrameSetElement.onmessage\"><code>HTMLFrameSetElement.onmessage</code></a></dt>\n <dd>\n <p>Fired when the window receives a message, for example from a call to <a href=\"/en-US/docs/Web/API/Window/postMessage\"><code>Window.postMessage()</code></a> from another browsing context.</p>\n </dd>\n <dt id=\"htmlframesetelement.onmessageerror\"><a href=\"/en-US/docs/Web/API/Window/messageerror_event\" title=\"HTMLFrameSetElement.onmessageerror\"><code>HTMLFrameSetElement.onmessageerror</code></a></dt>\n <dd>\n <p>Fired when the window receives a message that can't be deserialized.</p>\n </dd>\n <dt id=\"htmlframesetelement.onoffline\"><a href=\"/en-US/docs/Web/API/Window/offline_event\" title=\"HTMLFrameSetElement.onoffline\"><code>HTMLFrameSetElement.onoffline</code></a></dt>\n <dd>\n <p>Fired when the browser has lost access to the network and the value of <a href=\"/en-US/docs/Web/API/Navigator/onLine\"><code>Navigator.onLine</code></a> switches to <code>false</code>.</p>\n </dd>\n <dt id=\"htmlframesetelement.ononline\"><a href=\"/en-US/docs/Web/API/Window/online_event\" title=\"HTMLFrameSetElement.ononline\"><code>HTMLFrameSetElement.ononline</code></a></dt>\n <dd>\n <p>Fired when the browser has gained access to the network and the value of <a href=\"/en-US/docs/Web/API/Navigator/onLine\"><code>Navigator.onLine</code></a> switches to <code>true</code>.</p>\n </dd>\n <dt id=\"htmlframesetelement.onpagehide\"><a href=\"/en-US/docs/Web/API/Window/pagehide_event\" title=\"HTMLFrameSetElement.onpagehide\"><code>HTMLFrameSetElement.onpagehide</code></a></dt>\n <dd>\n <p>Fired when the browser hides the current page in the process of presenting a different page from the session's history.</p>\n </dd>\n <dt id=\"htmlframesetelement.onpageshow\"><a href=\"/en-US/docs/Web/API/Window/pageshow_event\" title=\"HTMLFrameSetElement.onpageshow\"><code>HTMLFrameSetElement.onpageshow</code></a></dt>\n <dd>\n <p>Fired when the browser displays the window's document due to navigation.</p>\n </dd>\n <dt id=\"htmlframesetelement.onpopstate\"><a href=\"/en-US/docs/Web/API/Window/popstate_event\" title=\"HTMLFrameSetElement.onpopstate\"><code>HTMLFrameSetElement.onpopstate</code></a></dt>\n <dd>\n <p>Fired when the active history entry changes while the user navigates the session history.</p>\n </dd>\n <dt id=\"htmlframesetelement.onrejectionhandled\"><a href=\"/en-US/docs/Web/API/Window/rejectionhandled_event\" title=\"HTMLFrameSetElement.onrejectionhandled\"><code>HTMLFrameSetElement.onrejectionhandled</code></a></dt>\n <dd>\n <p>Fired whenever a JavaScript <a href=\"/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise\"><code>Promise</code></a> is rejected and the rejection has been handled.</p>\n </dd>\n <dt id=\"htmlframesetelement.onstorage\"><a href=\"/en-US/docs/Web/API/Window/storage_event\" title=\"HTMLFrameSetElement.onstorage\"><code>HTMLFrameSetElement.onstorage</code></a></dt>\n <dd>\n <p>Fired when a storage area (<code>localStorage</code>) has been modified in the context of another document.</p>\n </dd>\n <dt id=\"htmlframesetelement.onunhandledrejection\"><a href=\"/en-US/docs/Web/API/Window/unhandledrejection_event\" title=\"HTMLFrameSetElement.onunhandledrejection\"><code>HTMLFrameSetElement.onunhandledrejection</code></a></dt>\n <dd>\n <p>Fired whenever a <a href=\"/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise\"><code>Promise</code></a> is rejected but the rejection was not handled.</p>\n </dd>\n <dt id=\"htmlframesetelement.onunload\"><a href=\"/en-US/docs/Web/API/Window/unload_event\" title=\"HTMLFrameSetElement.onunload\"><code>HTMLFrameSetElement.onunload</code></a></dt>\n <dd>\n <p>Fired when the document is being unloaded.</p>\n </dd>\n</dl>"}},{"type":"specifications","value":{"title":"Specifications","id":"specifications","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/obsolete.html#htmlframesetelement","title":"HTML Standard"}],"query":"api.HTMLFrameSetElement"}},{"type":"browser_compatibility","value":{"title":"Browser compatibility","id":"browser_compatibility","isH3":false,"query":"api.HTMLFrameSetElement"}},{"type":"prose","value":{"id":"see_also","title":"See also","isH3":false,"content":"<ul>\n <li>HTML element implementing this interface: <a href=\"/en-US/docs/Web/HTML/Element/frameset\"><code><frameset></code></a></li>\n <li>The equivalent of this element outside of frames: <code>HTMLFrameSetElement</code>.</li>\n</ul>"}}],"toc":[{"text":"Instance properties","id":"instance_properties"},{"text":"Instance methods","id":"instance_methods"},{"text":"Event handlers","id":"event_handlers"},{"text":"Specifications","id":"specifications"},{"text":"Browser compatibility","id":"browser_compatibility"},{"text":"See also","id":"see_also"}],"summary":"The HTMLFrameSetElement interface provides special properties (beyond those of the regular HTMLElement interface they also inherit) for manipulating <frameset> elements.","popularity":0,"modified":"2024-10-16T00:20:59.000Z","other_translations":[{"locale":"de","title":"HTMLFrameSetElement","native":"Deutsch"},{"locale":"fr","title":"HTMLFrameSetElement","native":"Français"},{"locale":"ja","title":"HTMLFrameSetElement","native":"日本語"},{"locale":"zh-CN","title":"HTMLFrameSetElement","native":"中文 (简体)"}],"pageType":"web-api-interface","source":{"folder":"en-us/web/api/htmlframesetelement","github_url":"https://github.com/mdn/content/blob/main/files/en-us/web/api/htmlframesetelement/index.md","last_commit_url":"https://github.com/mdn/content/commit/d47348199a379f68bea876a403eb510628ec4ccb","filename":"index.md"},"short_title":"HTMLFrameSetElement","parents":[{"uri":"/en-US/docs/Web","title":"References"},{"uri":"/en-US/docs/Web/API","title":"Web APIs"},{"uri":"/en-US/docs/Web/API/HTMLFrameSetElement","title":"HTMLFrameSetElement"}],"pageTitle":"HTMLFrameSetElement - Web APIs | MDN","noIndexing":false}}</script></body></html>