Browser related properties in JavaScript
General browser information properties:
Screen and browser dimension properties:
Display information properties:
Language properties:
MIME type properties:
History properties:
Component properties:
Plugin properties:
Additional properties:
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| appCodeName (clientInformation, navigator) |
Retrieves the code name of the browser. | ||||||
| appMinorVersion (clientInformation, navigator) |
Returns the minor version of the browser. | ||||||
| appName (clientInformation, navigator) |
Returns the name of the browser. | ||||||
| appVersion (clientInformation, navigator) |
Returns the platform and version of the browser. | ||||||
| buildID (navigator) |
Retrieves the build identifier of the browser. | ||||||
| clientInformation (window) |
Contains information about the browser and the operating system of the user. | ||||||
| clipboardData (window) |
Allows access to the data placed on the system clipboard. | ||||||
| cpuClass (clientInformation, navigator) |
Returns the central processing unit (CPU) class of the user's operating system. | ||||||
| enabledPlugin (mimeType) |
Returns a plugin object that contains information about the plug-in that is set to handle the data of the current MIME type. | ||||||
| enableSmartCardEvents (crypto) |
Sets or retrieves a Boolean value that indicates whether the document recieves SmartCard events. | ||||||
| onLine (clientInformation, navigator) |
Returns a Boolean value that indicates whether the browser is working online. | ||||||
| oscpu (navigator) |
Returns a string that contains information about the user's operating system and the central processing unit (CPU). | ||||||
| platform (clientInformation, navigator) |
Returns the name of the operating system platform. | ||||||
| product (clientInformation, navigator) |
Returns a string that contains information about the browser engine. | ||||||
| productSub (clientInformation, navigator) |
Returns a string that contains information about the development build number of the browser engine. | ||||||
| userAgent (clientInformation, navigator) |
Returns a string value that represents the user-agent header. | ||||||
| vendor (clientInformation, navigator) |
Returns a string that specifies the name of the browser vendor. | ||||||
| vendorSub (clientInformation, navigator) |
Returns a string that specifies the version number of the browser given by the vendor. | ||||||
| version (crypto) |
Returns a string that specifies the version number of the crypto object. |
| Property | Support | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| availHeight (screen) |
Returns the height of the area on the screen that is available for application windows. | |||||||||||
| availLeft (screen) |
Returns the left side of the area on the screen that is available for application windows. | |||||||||||
| availTop (screen) |
Returns the top side of the area on the screen that is available for application windows. | |||||||||||
| availWidth (screen) |
Returns the width of the area on the screen that is available for application windows. | |||||||||||
| fullScreen (window) |
|
Specifies or retrieves whether the browser application is in full-screen mode or not. | ||||||||||
| height (screen) |
Returns the vertical resolution of the display screen, in pixels. | |||||||||||
| left (screen) |
Retrieves the horizontal offset of top-left corner of the current screen relative to the top-left corner of the main screen, in pixels. | |||||||||||
| outerHeight (window) |
|
Sets or retrieves the total height of the browser window, including toolbars and scrollbars. | ||||||||||
| outerWidth (window) |
|
Sets or retrieves the total width of the browser window, including toolbars and scrollbars. | ||||||||||
| screenLeft (window) |
Returns an integer value that indicates the horizontal position of the left side of the browser's client area, relative to the left side of the screen. | |||||||||||
| screenTop (window) |
Returns an integer value that indicates the vertical position of the top side of the browser's client area, relative to the top side of the screen. | |||||||||||
| screenX (window) |
|
Returns an integer value that indicates the horizontal position of the left side of the browser window, relative to the left side of the screen. | ||||||||||
| screenY (window) |
|
Returns an integer value that indicates the vertical position of the top side of the browser window, relative to the top side of the screen. | ||||||||||
| top (screen) |
Retrieves the vertical offset of the top-left corner of the current screen relative to the top-left corner of the main screen, in pixels. | |||||||||||
| width (screen) |
Returns the horizontal resolution of the display screen, in pixels. |
| Property | Support | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bufferDepth (screen) |
Sets or retrieves the number of bits used to represent the color of a single pixel in the off-screen bitmap buffer. | |||||||||||
| colorDepth (screen) |
Retrieves the number of bits used to represent the color of a single pixel on the screen or in the buffer when off-screen buffering is allowed. | |||||||||||
| deviceXDPI (screen) |
Returns the current number of dots per inch (DPI) of the document's viewport along the horizontal (x) axis. | |||||||||||
| deviceYDPI (screen) |
Returns the current number of dots per inch (DPI) of the document's viewport along the vertical (y) axis. | |||||||||||
| logicalXDPI (screen) |
Returns the number of dots per inch (DPI) of the document's viewport along the horizontal (x) axis at normal zoom level. | |||||||||||
| logicalYDPI (screen) |
Returns the number of dots per inch (DPI) of the document's viewport along the vertical (y) axis at normal zoom level. | |||||||||||
| pixelDepth (screen) |
|
Retrieves the number of bits used to represent the color of a single pixel on the screen or in the buffer when off-screen buffering is allowed. | ||||||||||
| systemXDPI (screen) |
|
Returns the number of dots per inch (DPI) of the display screen along the horizontal (x) axis at normal zoom level. | ||||||||||
| systemYDPI (screen) |
|
Returns the number of dots per inch (DPI) of the display screen along the horizontal (x) axis at normal zoom level. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| browserLanguage (clientInformation, navigator) |
Returns the language of the browser application or the operating system's user interface. | ||||||
| language (clientInformation, navigator) |
Returns the language of the browser application. | ||||||
| systemLanguage (clientInformation, navigator) |
Returns the language edition of the operating system. | ||||||
| userLanguage (clientInformation, navigator) |
Returns the current Regional and Language settings of the operating system in Internet Explorer and the language of the browser application in Opera. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| description (mimeType) |
Returns a long description of the current MIME type. | ||||||
| length (mimeTypes) |
Returns an integer that specifies the number of objects in the current collection. | ||||||
| plugins (clientInformation, navigator) |
Represents a collection of all installed plugins in the browser. | ||||||
| suffixes (mimeType) |
Returns a string value that contains a comma separated list of possible file extensions for the current MIME type. | ||||||
| type (mimeType) |
Returns the name of the current MIME type. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| current (history) |
Returns the URL of the current document in the history array. | ||||||
| history (window) |
Provides access to the browser history that contains the URLs of visited pages. | ||||||
| length (history) |
Returns the number of entries in the history list of the current browser window. | ||||||
| navigationMode (history) |
Sets or retrieves the navigation type in the history. | ||||||
| next (history) |
Returns the URL of the next document in the history array. | ||||||
| previous (history) |
Returns the URL of the previous document in the history array. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| classes (Components) |
Returns a read-only object through which the registered component classes are accessible by ContractID (contract identifier). | ||||||
| classesByID (Components) |
Returns a read-only object through which the registered component classes are accessible by ClassID (class identifier). | ||||||
| interfaces (Components) |
Returns a read-only object through which interfaces are accessible by name. | ||||||
| interfacesByID (Components) |
Returns a read-only object through which interfaces are accessible by IID (interface identifier). | ||||||
| lastResult (Components) |
Returns an integer that represents the result of the most recent XPCOM method call. | ||||||
| manager (Components) |
Returns a reference to the global component manager service. | ||||||
| results (Components) |
Returns a read-only object through which the known result codes are accessible by name. | ||||||
| returnCode (Components) |
Returns an integer that represents the result of the current XPCOM method call. | ||||||
| stack (Components) |
Returns an object that represents the current JavaScript call stack. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| description (plugin) |
Returns the description supplied by the plugin manufacturer. | ||||||
| filename (plugin) |
Returns the file name of the current plugin with extension. | ||||||
| length (plugin) |
Returns an integer that specifies the number of associated MIME types. | ||||||
| length (plugins) |
Returns an integer that specifies the number of the installed plugins in the browser. | ||||||
| name (plugin) |
Returns the name of the plugin specified by the application manufacturer. |
| Property | Support | Description | |||||
|---|---|---|---|---|---|---|---|
| Components (window) |
Implements the XPConnect (Cross Platform Connect) technology that provides interaction between XPCOM (Cross Platform Component Object Model) and JavaScript. | ||||||
| cookie (document) |
Sets or retrieves the cookies stored for the current document. | ||||||
| cookieEnabled (clientInformation, navigator) |
Retrieves a Boolean value that indicates whether cookies are enabled in the browser. | ||||||
| defaultStatus (window) |
Sets or returns the default message in the status bar. | ||||||
| fontSmoothingEnabled (screen) |
Returns a Boolean value that indicates whether font smoothing is enabled. | ||||||
| frozen (external) |
Returns a Boolean value that indicates whether the document containing the current Scriptlet Component is ready to handle events. | ||||||
| menuArguments (external) |
Retrieves a reference to the window object that contains the context menu. | ||||||
| pkcs11 (window) |
Retrieves a reference to the pkcs11 object. Use this object to install drivers or other software. | ||||||
| updateInterval (screen) |
Specifies or returns the time interval (in milliseconds) between screen updates. | ||||||
| utils (Components) |
Implements useful features for the XPConnect (Cross Platform Connect) technology. | ||||||
| visible (locationbar, menubar, ...) |
Sets or retrieves a Boolean value that indicates whether the current bar object is visible or not. This property is read-only in Google Chrome and Safari. In Firefox, the UniversalBrowserWrite privilege is required to modify the value of this property. |
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