Client-Side Javascript Reference

常用

Property

Window.innerHeight

Gets the height of the content area of the browser window including, if rendered, the horizontal scrollbar.

Window.innerWidth Gets the width of the content area of the browser window including, if rendered, the vertical scrollbar.

Window.outerHeight Read only

Gets the height of the outside of the browser window.

Window.outerWidth Read only

Gets the width of the outside of the browser window.

Window.pageXOffset Read only

An alias for window.scrollX.

Window.pageYOffset Read only

An alias for window.scrollY

Window.screen Read only

Returns a reference to the screen object associated with the window.

Window.scrollX Read only

Returns the number of pixels that the document has already been scrolled horizontally.

Window.scrollY Read only

Returns the number of pixels that the document has already been scrolled vertically.

Methods

WindowTimers.clearInterval()

Cancels the repeated execution set using

WindowTimers.setInterval().

WindowTimers.clearTimeout()

Cancels the repeated execution set using

WindowTimers.setTimeout().

Window.close()

Closes the current window.

Window.confirm()

Displays a dialog with a message that the user needs to respond to.

Window.scrollTo()

Scrolls to a particular set of coordinates in the document.

Window.moveTo()

Moves the window to the specified coordinates.

Window.resizeTo() Dynamically resizes window.

其他

Window.applicationCache Read only

An OfflineResourceList object providing access to the offline resources for the window.

Window.caches Read only

Returns the CacheStorage object associated with the current origin. This object enables service worker functionality such as storing assets for offline use, and generating custom responses to requests.

Window.closed Read only This property indicates whether the current window is closed or not.

Window.Components

The entry point to many XPCOM features. Some properties, e.g. classes, are only available to sufficiently privileged code. Web code should not use this property.

Window.console Read only Returns a reference to the console object providing access to the browser's debugging console.

Window.content and Window._content Read only

Returns a reference to the content element in the current window. The obsolete variant with underscore is no longer available from Web content.

Window.controllers Read only Returns the XUL controller objects for the current chrome window.

Window.crypto Read only

Returns the browser crypto object.

Window.defaultStatus

Gets/sets the status bar text for the given window.

Window.devicePixelRatio Read only

Returns the ratio between physical pixels and device independent pixels in the current display.

Window.dialogArguments Read only

Gets the arguments passed to the window (if it's a dialog box) at the time window.showModalDialog() was called. This is an nsIArray.

Window.directories

Synonym of window.personalbar

Window.document Read only

Returns a reference to the document that the window contains.

Window.frameElement Read only

Returns the element in which the window is embedded, or null if the window is not embedded.

Window.frames Read only Returns an array of the subframes in the current window.

Window.fullScreen This property indicates whether the window is displayed in full screen or not.

Window.history Read only

Returns a reference to the history object.

Window.length Read only Returns the number of frames in the window. See also window.frames.

Window.location Read only Gets/sets the location, or current URL, of the window object.

Window.locationbar Read only

Returns the locationbar object, whose visibility can be toggled in the window.

Window.localStorage Read only Returns a reference to the local storage object used to store data that may only be accessed by the origin that created it.

Window.menubar Read only

Returns the menubar object, whose visibility can be toggled in the window.

Window.messageManager

Returns the message manager object for this window.

Window.mozAnimationStartTime Read only

The time in milliseconds since epoch at which the current animation cycle began.

Window.mozInnerScreenX Read only

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 Read only

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 Read only

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 Gets/sets the name of the window.

Window.navigator Read only Returns a reference to the navigator object.

Window.opener Returns a reference to the window that opened this current window.

Window.sessionStorage Read only

Returns a reference to the session storage object used to store data that may only be accessed by the origin that created it.

SpeechSynthesisGetter.speechSynthesis Read only

Window.parent Read only

Returns a reference to the parent of the current window or subframe.

Window.performance Read only

Provides a hosting area for performance related attributes. Window.personalbar Read only Returns the personalbar object, whose visibility can be toggled in the window. Window.pkcs11 Obsolete since 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.self Read only Returns an object reference to the window object itself. Window.sessionStorage Returns a storage object for storing data within a single page session. Window.sidebar Read only Returns a reference to the window object of the sidebar. Window.status Gets/sets the text in the statusbar at the bottom of the browser. Window.statusbar Read only Returns the statusbar object, whose visibility can be toggled in the window. Window.toolbar Read only Returns the toolbar object, whose visibility can be toggled in the window. Window.top Read only Returns a reference to the topmost window in the window hierarchy. This property is read only. Window.window Read only 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.

Methods

EventTarget.addEventListener()

Register an event handler to a specific event type on the window.

Window.alert() Displays an alert dialog. WindowBase64.atob() Decodes a string of data which has been encoded using base-64 encoding. Window.back()

Moves back one in the window history.

Window.blur()

Sets focus away from the window. WindowBase64.btoa()

Creates a base-64 encoded ASCII string from a string of binary data.

Window.captureEvents()

Registers the window to capture all events of the specified type.

Window.clearImmediate()

Cancels the repeated execution set using setImmediate.

Window.disableExternalCapture() Obsolete since Gecko 24 FIXME: NeedsContents Window.dispatchEvent() Used to trigger an event. Window.dump() Writes a message to the console. Window.enableExternalCapture() Obsolete since Gecko 24 FIXME: NeedsContents GlobalFetch.fetch() Starts the process of fetching a resource. Window.find() Searches for a given string in a window. Window.focus() Sets focus on the current window. Window.forward()
Moves the window one document forward in the history. Window.getAttention() 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()
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.mozRequestAnimationFrame() Tells the browser that an animation is in progress, requesting that the browser schedule a repaint of the window for the next animation frame. This will cause a MozBeforePaint event to fire before that repaint occurs. Window.open() Opens a new window. Window.openDialog() Opens a new dialog window. Window.postMessage() Provides a secure means for one window to send a string of data to another window, which need not be within the same domain as the first. Window.print() Opens the Print Dialog to print the current document. Window.prompt() Returns the text entered by the user in a prompt dialog. Window.releaseEvents() Releases the window from trapping events of a specific type. Window.removeEventListener() Removes an event listener from the window. Window.resizeBy()

Window.restore() FIXME: NeedsContents Window.routeEvent() Obsolete since Gecko 24 FIXME: NeedsContents Window.scroll() Scrolls the window to a particular place in the document. Window.scrollBy() Scrolls the document in the window by the given amount. Window.scrollByLines() Scrolls the document by the given number of lines. Window.scrollByPages() Scrolls the current document by the specified number of pages.

Window.setCursor() Changes the cursor for the current window Window.setImmediate() Executes a function after the browser has finished other heavy tasks WindowTimers.setInterval() Schedules the execution of a function each X milliseconds. Window.setResizable FIXME: NeedsContents WindowTimers.setTimeout() Sets a delay for executing a function. Window.showModalDialog() Displays a modal dialog. Window.sizeToContent() Sizes the window according to its content. Window.stop() This method stops window loading. Window.updateCommands() Updates the state of commands of the current chrome window (UI).