HTML Quick Reference - HTML5 and CSS Comprehensive - page 684

Table G-19 Navigator Object (continued)

Property Description

userAgent User agent

Method Function

javaEnabled() Determines whether Java is enabled in the current browser

plugins.refresh() Enables newly installed plugins on the client

savePreferences() Saves all user preferences

Window and Frame Objects
The Window object represents a browser's window or an individual frame within
a window. Thus, every Frame object is a window object, and uses all the methods and
properties of the Window object. Table G-20 summarizes the Window and Frame
objects' properties, methods, and events. ( Note: Frames are not supported by HTML5 and
not recommended for users with accessibility needs; they should be avoided if possible.
Frames are included in the event that you encounter older Web pages.)

Table G-20 Window and Frame Objects

Property Description

closed Boolean value to determine if window has been closed

defaultStatus Default text that is written to the status bar

document Reference to the Document object

frames[] Array listing the Frame objects in the window

history Reference to the History object

length Number of frames in a window

location Reference to the Location object

name Name of a window

navigator Points to the Navigator object for the browser

opener Window object that opens another window

parent Parent frame that contains the current frame

screen Screen information where the browser is running

self Self-reference to the Window object

status Temporary text that is written to the status bar

top Topmost Window object that contains the current frame

window Self-reference to the Window object

Method Function

alert() Displays a message dialog box with an OK button

blur() Removes the focus from the window

clearTimeout() Cancels a set timeout

close() Closes the window

confirm( Displays a confirmation dialog box with OK and Cancel buttons

focus() Makes the Window object the active window

moveBy(x,y) The moveBy() method moves the window horizontally or vertically by the

number of pixels; positive numbers move right and down, negative move
in the opposite direction