Window

window 对象表示一个包含DOM文档的窗口, document 属性指向窗口中载入的 DOM文档 。使用 document.defaultView 属性可以获取指定文档所在窗口。

window作为全局变量,代表了脚本正在运行的窗口,暴露给 Javascript 代码。

本节为 DOM Window 对象中可用的所有方法、属性和事件提供简要参考。window 对象实现了 Window 接口,此接口继承自 AbstractView 接口。一些额外的全局函数、命名空间、对象、接口和构造函数与 window 没有典型的关联,但却是有效的,它们在 JavaScript参考DOM参考 中列出。

在有标签页功能的浏览器中,每个标签都拥有自己的 window 对象;也就是说,同一个窗口的标签页之间不会共享一个 window 对象。有一些方法,如 window.resizeTowindow.resizeBy 之类的方法会作用于整个窗口而不是 window 对象所属的那个标签。一般而言,如果一样东西无法恰当地作用于标签,那么它就会作用于窗口。

Constructors

See also the DOM Interfaces.

DOMParser
DOMParser can parse XML or HTML source stored in a string into a DOM Document. DOMParser is specified in DOM Parsing and Serialization.
Window.GeckoActiveXObject
FIXME: NeedsContents
Image (en-US)
Used for creating an HTMLImageElement.
Option (en-US)
Used for creating an HTMLOptionElement
Window.QueryInterface
FIXME: NeedsContents
Window.StaticRange (en-US) 只读
Returns a StaticRange() (en-US) constructor which creates a StaticRange (en-US) object.
Worker
Used for creating a Web worker
Window.XMLSerializer
FIXME: NeedsContents
Window.XPCNativeWrapper
FIXME: NeedsContents
Window.XPCSafeJSObjectWrapper
FIXME: NeedsContents

属性

这个接口从 EventTarget 接口继承属性,也从 WindowOrWorkerGlobalScopeWindowEventHandlers 这两个 mixin 中继承属性。

注意,对象类型的属性(例如:覆盖内建元素的原型)被列于下面单独的小节之中。

Window.closed 只读
这个属性指示当前窗口是否关闭。
Window.console 只读
返回 console 对象的引用,该对象提供了对浏览器调试控制台的访问。
Window.contentWindow._content This is an obsolete API and is no longer guaranteed to work. 只读
返回当前 window 的 content 元素的引用。通过带下划线的过时变种方法不再可以获得 Web content。
Window.controllers 只读
返回当前 chrome window 的 XUL 控制器对象。
Window.customElements 只读
returns a reference to the CustomElementRegistry object, which can be used to register new custom elements and get information about previously registered custom elements.
Window.crypto 只读
返回浏览器 crypto 对象。
Window.defaultStatus 已废弃 Gecko 23
获取或设置指定窗口的状态栏文本。
Window.devicePixelRatio 只读
返回当前显示器的物理像素和设备独立像素的比例。
Window.dialogArguments 只读
获取在调用 window.showModalDialog() 时传递给窗口的参数(如果它是一个对话框)。这是一个 nsIArray
Window.directories This is an obsolete API and is no longer guaranteed to work.
window.personalbar 的另一种形式。
Window.document 只读
返回对当前窗口所包含文档的引用。
Window.DOMMatrix 只读
Returns a reference to a DOMMatrix object, which represents 4x4 matrices, suitable for 2D and 3D operations.
Window.DOMMatrixReadOnly 只读
Returns a reference to a DOMMatrixReadOnly (en-US) object, which represents 4x4 matrices, suitable for 2D and 3D operations.
Window.DOMPoint 只读
Returns a reference to a DOMPoint object, which represents a 2D or 3D point in a coordinate system.
Window.DOMPointReadOnly 只读
Returns a reference to a DOMPointReadOnly (en-US) object, which represents a 2D or 3D point in a coordinate system.
Window.DOMQuad 只读
Returns a reference to a DOMQuad object, which provides represents a quadrilaterial object, that is one having four corners and four sides.
Window.DOMRect 只读
Returns a reference to a DOMRect object, which represents a rectangle.
Window.DOMRectReadOnly 只读
Returns a reference to a DOMRectReadOnly object, which represents a rectangle.
Window.event 只读
Returns the current event, which is the event currently being handled by the JavaScript code's context, or undefined if no event is currently being handled. The Event object passed directly to event handlers should be used instead whenever possible.
Window.frameElement 只读
返回嵌入窗口的元素,如果未嵌入窗口,则返回null。
Window.frames 只读
返回当前窗口中所有子窗体的数组。
Window.fullScreen
此属性表示窗口是否以全屏显示。
Window.globalStorage 已废弃 Gecko 13
Gecko 13 (Firefox 13) 开始废弃。使用 Window.localStorage 替代它。
原本是:用于存储跨页面数据的多重存储对象。
Window.history 只读
返回一个对 history 对象的引用。
Window.innerHeight 只读
获得浏览器窗口的内容区域的高度,包含水平滚动条(如果有的话)。
Window.innerWidth 只读
获得浏览器窗口的内容区域的宽度,包含垂直滚动条(如果有的话)。
Window.isSecureContext 只读
指出上下文环境是否能够使用安全上下文环境的特征。
Window.length 只读
返回窗口中的 frames 数量。参见 window.frames
Window.location
获取、设置 window 对象的 location, 或者当前的 URL.
Window.locationbar 只读
返回 locationbar 对象,其可视性可以在窗口中切换。
Window.localStorage 只读
返回用来存储只能在创建它的源下访问的数据的本地存储对象的引用
Window.menubar 只读
返回菜单条对象,它的可视性可以在窗口中切换
Window.messageManager
返回窗口的 message manager 对象。
Window.mozAnimationStartTime 只读
返回当前动画循环开始经过的毫秒数
Window.mozInnerScreenX 只读
Returns the horizontal (X) coordinate of the top-left corner of the window's viewport, in screen coordinates. This value is reported in CSS pixels. See mozScreenPixelsPerCSSPixel in nsIDOMWindowUtils for a conversion factor to adapt to screen pixels if needed.
Window.mozInnerScreenY 只读
Returns the vertical (Y) coordinate of the top-left corner of the window's viewport, in screen coordinates. This value is reported in CSS pixels. See mozScreenPixelsPerCSSPixel for a conversion factor to adapt to screen pixels if needed.
Window.mozPaintCount 只读
Returns the number of times the current document has been rendered to the screen in this window. This can be used to compute rendering performance.
Window.name
获取/设置窗口的名称。
Window.navigator 只读
返回对 navigator 对象的引用。
Window.opener
返回对打开当前窗口的那个窗口的引用。
Window.orientation (en-US) 只读
Returns the orientation in degrees (in 90 degree increments) of the viewport relative to the device's natural orientation.
Window.outerHeight 只读
返回浏览器窗口的外部高度。
Window.outerWidth 只读
返回浏览器窗口的外部宽度。
Window.pageXOffset 只读
window.scrollX的别名。
Window.pageYOffset 只读
window.scrollY的别名。
Window.parent 只读
返回当前窗口或子窗口的父窗口的引用。
Window.performance 只读
Returns a Performance object, which includes the timing and navigation attributes, each of which is an object providing performance-related data. See also Using Navigation Timing for additional information and examples.
Window.personalbar 只读
返回 personalbar 对象,它的可视性可以在窗口中切换。
Window.pkcs11 (en-US) 已废弃 Gecko 29
Formerly provided access to install and remove PKCS11 modules.
Window.returnValue
The return value to be returned to the function that called window.showModalDialog() to display the window as a modal dialog.
Window.screen 只读
Returns a reference to the screen object associated with the window.
Window.screenX and Window.screenLeft 只读
Both properties return the horizontal distance from the left border of the user's browser viewport to the left side of the screen.
Window.screenY and Window.screenTop 只读
Both properties return the vertical distance from the top border of the user's browser viewport to the top side of the screen.
Window.scrollbars 只读
Returns the scrollbars object, whose visibility can be toggled in the window.
Window.scrollMaxX 只读
The maximum offset that the window can be scrolled to horizontally, that is the document width minus the viewport width.
Window.scrollMaxY 只读
The maximum offset that the window can be scrolled to vertically (i.e., the document height minus the viewport height).
Window.scrollX 只读
Returns the number of pixels that the document has already been scrolled horizontally.
Window.scrollY 只读
Returns the number of pixels that the document has already been scrolled vertically.
Window.self 只读
Returns an object reference to the window object itself.
Window.sessionStorage
Returns a reference to the session storage object used to store data that may only be accessed by the origin that created it.
Window.sidebar 只读
Returns a reference to the window object of the sidebar.
Window.speechSynthesis (en-US) 只读
Returns a SpeechSynthesis object, which is the entry point into using Web Speech API speech synthesis functionality.
Window.status (en-US)
Gets/sets the text in the statusbar at the bottom of the browser.
Window.statusbar (en-US) 只读
Returns the statusbar object, whose visibility can be toggled in the window.
Window.toolbar (en-US) 只读
Returns the toolbar object, whose visibility can be toggled in the window.
Window.top 只读
Returns a reference to the topmost window in the window hierarchy. This property is read only.
Window.visualViewport 只读
Returns a VisualViewport object which represents the visual viewport for a given window.
Window.window 只读
Returns a reference to the current window.
window[0], window[1], etc.
Returns a reference to the window object in the frames. See Window.frames for more details.

Properties implemented from elsewhere

WindowOrWorkerGlobalScope.caches 只读
Returns the CacheStorage object associated with the current context. This object enables functionality such as storing assets for offline use, and generating custom responses to requests.
WindowOrWorkerGlobalScope.indexedDB 只读
Provides a mechanism for applications to asynchronously access capabilities of indexed databases; returns an IDBFactory object.
WindowOrWorkerGlobalScope.isSecureContext 只读
Returns a boolean indicating whether the current context is secure (true) or not (false).
WindowOrWorkerGlobalScope.origin 只读
Returns the global object's origin, serialized as a string. (This does not yet appear to be implemented in any browser.)

方法

This interface inherits methods from the EventTarget interface and implements methods from WindowOrWorkerGlobalScope and EventTarget.

Window.alert()
Displays an alert dialog.
Window.back() This is an obsolete API and is no longer guaranteed to work.
Moves back one in the window history. This method is obsolete; you should instead use window.history.back().
Window.blur()
Sets focus away from the window.
Window.cancelAnimationFrame()
Enables you to cancel a callback previously scheduled with Window.requestAnimationFrame.
Window.cancelIdleCallback()
Enables you to cancel a callback previously scheduled with Window.requestIdleCallback.
Window.captureEvents() (en-US)
Registers the window to capture all events of the specified type.
Window.clearImmediate()
Cancels the repeated execution set using setImmediate.
Window.close()
Closes the current window.
Window.confirm()
Displays a dialog with a message that the user needs to respond to.
Window.disableExternalCapture() 已废弃 Gecko 24
FIXME: NeedsContents
Window.dispatchEvent()
Used to trigger an event.
Window.dump()
Writes a message to the console.
Window.enableExternalCapture() 已废弃 Gecko 24
FIXME: NeedsContents
Window.find()
Searches for a given string in a window.
Window.focus()
Sets focus on the current window.
Window.forward() (en-US) This is an obsolete API and is no longer guaranteed to work.
Moves the window one document forward in the history. This method is obsolete; you should instead use window.history.forward().
Window.getAttention() This is an obsolete API and is no longer guaranteed to work.
Flashes the application icon.
Window.getAttentionWithCycleCount()
FIXME: NeedsContents
Window.getComputedStyle()
Gets computed style for the specified element. Computed style indicates the computed values of all CSS properties of the element.
Window.getDefaultComputedStyle()
Gets default computed style for the specified element, ignoring author stylesheets.
Window.getSelection()
Returns the selection object representing the selected item(s).
Window.home() (en-US) This is an obsolete API and is no longer guaranteed to work.
Returns the browser to the home page.
Window.matchMedia()
Returns a MediaQueryList object representing the specified media query string.
Window.maximize()
FIXME: NeedsContents
Window.minimize() (top-level XUL windows only)
Minimizes the window.
Window.moveBy()
Moves the current window by a specified amount.
Window.moveTo()
Moves the window to the specified coordinates.
Window.open()
打开一个新窗口。
Window.openDialog() This is an obsolete API and is no longer guaranteed to work.
打开一个新的对话框窗口。
Window.postMessage()
为一个窗口向另一个窗口发送数据字符串提供了一种安全方法,该窗口不必与第一个窗口处于相同的域中。
Window.print()
打开打印对话框以打印当前文档。
Window.prompt()
返回用户在提示对话框中输入的文本。
Window.releaseEvents() (en-US)
释放捕获特定类型事件的窗口。
Window.requestAnimationFrame()
告诉浏览器一个动画正在进行中,请求浏览器为下一个动画帧重新绘制窗口。
Window.requestIdleCallback()
启用在浏览器空闲期间对任务进行调度。
Window.resizeBy()
将当前窗口调整到一定的大小。
Window.resizeTo()
动态调整窗口。
Window.restore() (en-US) This is an obsolete API and is no longer guaranteed to work.
FIXME: NeedsContents
Window.routeEvent() (en-US) 已废弃 Gecko 24
FIXME: NeedsContents
Window.scroll()
滚动窗口到文档中的特定位置。
Window.scrollBy()
按给定的数量在窗口中滚动文档。
Window.scrollByLines()
按给定行数滚动文档。
Window.scrollByPages()
按指定页数滚动当前文档。
Window.scrollTo()
滚动到文档中的特定坐标集。
Window.setCursor() (top-level XUL windows only)
更改当前窗口的光标。
Window.setImmediate()
在浏览器完成其他繁重任务后执行一个函数。
Window.setResizable()
切换用户调整窗口大小的能力。
Window.sizeToContent()
根据内容设置窗口大小。
Window.stop()
这个方法停止窗口加载。
Window.updateCommands()
更新当前chrome窗口(UI)命令的状态。

Methods implemented from elsewhere

EventTarget.addEventListener()
Register an event handler to a specific event type on the window.
WindowOrWorkerGlobalScope.atob()
Decodes a string of data which has been encoded using base-64 encoding.
WindowOrWorkerGlobalScope.btoa()
Creates a base-64 encoded ASCII string from a string of binary data.
WindowOrWorkerGlobalScope.clearInterval()
Cancels the repeated execution set using WindowOrWorkerGlobalScope.setInterval().
WindowOrWorkerGlobalScope.clearTimeout()
Cancels the delayed execution set using WindowOrWorkerGlobalScope.setTimeout().
WindowOrWorkerGlobalScope.createImageBitmap()
Accepts a variety of different image sources, and returns a Promise (en-US) which resolves to an ImageBitmap. Optionally the source is cropped to the rectangle of pixels originating at (sx, sy) with width sw, and height sh.
WindowOrWorkerGlobalScope.fetch()
Starts the process of fetching a resource from the network.
EventTarget.removeEventListener
Removes an event listener from the window.
WindowOrWorkerGlobalScope.setInterval()
Schedules a function to execute every time a given number of milliseconds elapses.
WindowOrWorkerGlobalScope.setTimeout()
Schedules a function to execute in a given amount of time.

Obsolete methods

Window.showModalDialog() This is an obsolete API and is no longer guaranteed to work.
Displays a modal dialog. This method was removed completely in Chrome 43, and Firefox 55.

Event handlers

These are properties of the window object that can be set to establish event handlers for the various things that can happen in the window that might be of interest.

This interface inherits event handlers from the EventTarget interface and implements event handlers from WindowEventHandlers.

Note: Starting in Gecko 9.0, you can now use the syntax if ("onabort" in window) to determine whether or not a given event handler property exists. This is because event handler interfaces have been updated to be proper web IDL interfaces. See DOM event handlers for details.

Window.onappinstalled
Called when the page is installed as a webapp. See appinstalled event.
Window.onbeforeinstallprompt
An event handler property dispatched before a user is prompted to save a web site to a home screen on mobile.
Window.ondevicelight
An event handler property for any ambient light levels changes
Window.ondevicemotion
Called if accelerometer detects a change (For mobile devices)
Window.ondeviceorientation
Called when the orientation is changed (For mobile devices)
Window.ondeviceorientationabsolute Chrome only
An event handler property for any device orientation changes.
Window.ondeviceproximity (en-US)
An event handler property for device proximity event
Window.ongamepadconnected
Represents an event handler that will run when a gamepad is connected (when the gamepadconnected (en-US) event fires).
Window.ongamepaddisconnected
Represents an event handler that will run when a gamepad is disconnected (when the gamepaddisconnected (en-US) event fires).
Window.onmozbeforepaint
An event handler property for the MozBeforePaint event, which is sent before repainting the window if the event has been requested by a call to the Window.mozRequestAnimationFrame() (en-US) method.
Window.onpaint
An event handler property for paint events on the window.
Window.onrejectionhandled (en-US)
An event handler for handled Promise rejection events.
Window.onuserproximity (en-US)
An event handler property for user proximity events.
Window.onvrdisplayconnect (en-US)
Represents an event handler that will run when a compatible VR device has been connected to the computer (when the vrdisplayconnected event fires).
Window.onvrdisplaydisconnect (en-US)
Represents an event handler that will run when a compatible VR device has been disconnected from the computer (when the vrdisplaydisconnected event fires).
Window.onvrdisplayactivate (en-US)
Represents an event handler that will run when a display is able to be presented to (when the vrdisplayactivate event fires), for example if an HMD has been moved to bring it out of standby, or woken up by being put on.
Window.onvrdisplaydeactivate (en-US)
Represents an event handler that will run when a display can no longer be presented to (when the vrdisplaydeactivate event fires), for example if an HMD has gone into standby or sleep mode due to a period of inactivity.
Window.onvrdisplayblur (en-US)
Represents an event handler that will run when presentation to a display has been paused for some reason by the browser, OS, or VR hardware (when the vrdisplayblur event fires) — for example, while the user is interacting with a system menu or browser, to prevent tracking or loss of experience.
Window.onvrdisplayfocus (en-US)
Represents an event handler that will run when presentation to a display has resumed after being blurred (when the vrdisplayfocus event fires).
Window.onvrdisplaypresentchange (en-US)
represents an event handler that will run when the presenting state of a VR device changes — i.e. goes from presenting to not presenting, or vice versa (when the vrdisplaypresentchange event fires).

Event handlers implemented from elsewhere

GlobalEventHandlers.onabort
Called when the loading of a resource has been aborted, such as by a user canceling the load while it is still in progress
WindowEventHandlers.onafterprint
Called when the print dialog box is closed. See afterprint (en-US) event.
WindowEventHandlers.onbeforeprint
Called when the print dialog box is opened. See beforeprint (en-US) event.
WindowEventHandlers.onbeforeunload
An event handler property for before-unload events on the window.
GlobalEventHandlers.onblur
Called after the window loses focus, such as due to a popup.
GlobalEventHandlers.onchange
An event handler property for change events on the window.
GlobalEventHandlers.onclick
Called after the ANY mouse button is pressed & released
GlobalEventHandlers.ondblclick
Called when a double click is made with ANY mouse button.
GlobalEventHandlers.onclose
Called after the window is closed
GlobalEventHandlers.oncontextmenu
Called when the RIGHT mouse button is pressed
GlobalEventHandlers.onerror
Called when a resource fails to load OR when an error occurs at runtime. See error (en-US) event.
GlobalEventHandlers.onfocus
Called after the window receives or regains focus. See focus (en-US) events.
WindowEventHandlers.onhashchange
An event handler property for hashchange (en-US) events on the window; called when the part of the URL after the hash mark ("#") changes.
GlobalEventHandlers.oninput
Called when the value of an <input> element changes
GlobalEventHandlers.onkeydown
Called when you begin pressing ANY key. See keydown (en-US) event.
GlobalEventHandlers.onkeypress
Called when a key (except Shift, Fn, and CapsLock) is in pressed position. See keypress (en-US) event.
GlobalEventHandlers.onkeyup
Called when you finish releasing ANY key. See keyup (en-US) event.
WindowEventHandlers.onlanguagechange
An event handler property for languagechange (en-US) events on the window.
GlobalEventHandlers.onload
Called after all resources and the DOM are fully loaded. WILL NOT get called when the page is loaded from cache, such as with back button.
WindowEventHandlers.onmessage
Is an event handler representing the code to be called when the message event is raised.
GlobalEventHandlers.onmousedown
Called when ANY mouse button is pressed.
GlobalEventHandlers.onmousemove
Called continously when the mouse is moved inside the window.
GlobalEventHandlers.onmouseout
Called when the pointer leaves the window.
GlobalEventHandlers.onmouseover
Called when the pointer enters the window
GlobalEventHandlers.onmouseup
Called when ANY mouse button is released
WindowEventHandlers.onoffline
Called when network connection is lost. See offline (en-US) event.
WindowEventHandlers.ononline
Called when network connection is established. See online (en-US) event.
WindowEventHandlers.onpagehide
Called when the user navigates away from the page, before the onunload event. See pagehide (en-US) event.
WindowEventHandlers.onpageshow
Called after all resources and the DOM are fully loaded. See pageshow (en-US) event.
WindowEventHandlers.onpopstate
Called when a back button is pressed.
GlobalEventHandlers.onreset
Called when a form is reset
GlobalEventHandlers.onresize
Called continuously as you are resizing the window.
GlobalEventHandlers.onscroll
Called when the scroll bar is moved via ANY means. If the resource fully fits in the window, then this event cannot be invoked
GlobalEventHandlers.onwheel
Called when the mouse wheel is rotated around any axis
GlobalEventHandlers.onselect
Called after text in an input field is selected
GlobalEventHandlers.onselectionchange
Is an event handler representing the code to be called when the selectionchange event is raised.
WindowEventHandlers.onstorage
Called when there is a change in session storage or local storage. See storage (en-US) event
GlobalEventHandlers.onsubmit
Called when a form is submitted
WindowEventHandlers.onunhandledrejection (en-US)
An event handler for unhandled Promise rejection events.
WindowEventHandlers.onunload
Called when the user navigates away from the page.

Events

Listen to these events using addEventListener() or by assigning an event listener to the oneventname property of this interface.

error
Fired when when a resource failed to load, or can't be used. For example, if a script has an execution error or an image can't be found or is invalid.
Also available via the onerror 属性。
languagechange
Fired at the global scope object when the user's preferred language changes.
Also available via the onlanguagechange 属性。
orientationchange
Fired when the orientation of the device has changed.
Also available via the onorientationchange 属性。
devicemotion
Fired at a regular interval, indicating the amount of physical force of acceleration the device is receiving and the rate of rotation, if available.
deviceorientation
Fired when fresh data is available from the magnetometer orientation sensor about the current orientation of the device as compared to the Earth coordinate frame.
resize
Fired when the window has been resized.
Also available via the onresize 属性。
storage
Fired when a storage area (localStorage or sessionStorage) has been modified in the context of another document.
Also available via the onstorage 属性。

Animation events

animationcancel
Fired when an animation unexpectedly aborts.
Also available via the onanimationcancel 属性。
animationend
Fired when an animation has completed normally.
Also available via the onanimationend 属性。
animationiteration
Fired when an animation iteration has completed.
Also available via the onanimationiteration 属性。
animationstart
Fired when an animation starts.
Also available via the onanimationstart 属性。

Clipboard events

clipboardchange
Fired when the system clipboard content changes.
copy
Fired when the user initiates a copy action through the browser's user interface.
Also available via the oncopy 属性。
cut
Fired when the user initiates a cut action through the browser's user interface.
Also available via the oncut 属性。
paste
Fired when the user initiates a paste action through the browser's user interface.
Also available via the onpaste 属性。

Connection events

offline
Fired when the browser has lost access to the network and the value of navigator.onLine has switched to false.
Also available via the onoffline 属性。
online
Fired when the browser has gained access to the network and the value of navigator.onLine has switched to true.
Also available via the ononline 属性。

Focus events

blur
Fired when an element has lost focus.
Also available via the onblur 属性。
focus
Fired when an element has gained focus.
Also available via the onfocus property

Gamepad events

gamepadconnected
Fired when the browser detects that a gamepad has been connected or the first time a button/axis of the gamepad is used.
Also available via the ongamepadconnected 属性。
gamepaddisconnected
Fired when the browser detects that a gamepad has been disconnected.
Also available via the ongamepaddisconnected property

History events

hashchange
Fired when the fragment identifier of the URL has changed (the part of the URL beginning with and following the # symbol).
Also available via the onhashchange 属性。
pagehide
Sent when the browser hides the current document while in the process of switching to displaying in its palce a different document from the session's history. This happens, for example, when the user clicks the Back button or when they click the Forward button to move ahead in session history.
Also available through the onpagehide event handler 属性。
pageshow
Sent when the browser makes the document visible due to navigation tasks, including not only when the page is first loaded, but also situations such as the user navigating back to the page after having navigated to another within the same tab.
Also available using the onpageshow event handler 属性。
popstate
Fired when the active history entry changes.
Also available using the onpopstate event handler 属性。

Load & unload events

beforeunload
Fired when the window, the document and its resources are about to be unloaded.
Also available via the onbeforeunload 属性。
DOMContentLoaded
Fired when the document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading.
load
Fired when the whole page has loaded, including all dependent resources such as stylesheets images.
Also available via the onload 属性。
unload
Fired when the document or a child resource is being unloaded.
Also available via the onunload 属性。

Manifest events

appinstalled
Fired when the browser has successfully installed a page as an application.
Also available via the onappinstalled 属性。
beforeinstallprompt
Fired when a user is about to be prompted to install a web application.
Also available via the onbeforeinstallprompt 属性。

Messaging events

message
Fired when the window receives a message, for example from a call to Window.postMessage() from another browsing context.
Also available via the onmessage 属性。
messageerror
Fired when a Window object receives a message that can't be deserialized.
Also available via the onmessageerror 属性。
afterprint
Fired after the associated document has started printing or the print preview has been closed.
Also available via the onafterprint 属性。
beforeprint
Fired when the associated document is about to be printed or previewed for printing.
Also available via the onbeforeprint 属性。

Promise rejection events

rejectionhandled
Sent every time a JavaScript Promise is rejected, regardless of whether or not there is a handler in place to catch the rejection.
Also available through the onrejectionhandled event handler 属性。
unhandledrejection
Sent when a JavaScript Promise is rejected but there is no handler in place to catch the rejection.
Also available using the onunhandledrejection event handler 属性。

Transition events

transitioncancel
Fired when a CSS transition is canceled.
Also available via the ontransitioncancel 属性。
transitionend
Fired when a CSS transition has completed.
Also available via the ontransitionend 属性。
transitionrun
Fired when a CSS transition is first created.
Also available via the ontransitionrun 属性。
transitionstart
Fired when a CSS transition has actually started.
Also available via the ontransitionstart 属性。

WebVR events

vrdisplayactivate
Fired when a VR display becomes available to be presented to, for example if an HMD has been moved to bring it out of standby, or woken up by being put on.
Also available via the onvrdisplayactivate 属性。
vrdisplayblur
Fired when presentation to a VR display has been paused for some reason by the browser, OS, or VR hardware.
Also available via the onvrdisplayblur 属性。
vrdisplayconnect
Fired when a compatible VR display is connected to the computer.
Also available via the onvrdisplayconnect 属性。
vrdisplaydeactivate
Fired when a VR display can no longer be presented to, for example if an HMD has gone into standby or sleep mode due to a period of inactivity.
Also available via the onvrdisplaydeactivate 属性。
vrdisplaydisconnect
Fired when a compatible VR display is disconnected from the computer.
Also available via the onvrdisplaydisconnect 属性。
vrdisplayfocus
Fired when presentation to a VR display has resumed after being blurred.
Also available via the onvrdisplayfocus 属性。
vrdisplaypresentchange
fired when the presenting state of a VR display changes — i.e. goes from presenting to not presenting, or vice versa.
Also available via the onvrdisplaypresentchange 属性。
vrdisplaypointerrestricted
Fired when the VR display's pointer input is restricted to consumption via a pointerlocked element.
Also available via the onvrdisplaypointerrestricted 属性。
vrdisplaypointerunrestricted
Fired when the VR display's pointer input is no longer restricted to consumption via a pointerlocked element.
Also available via the onvrdisplaypointerunrestricted 属性。

接口

See DOM Reference

浏览器兼容性

BCD tables only load in the browser

参见