JavaScript is also capable of taking note of the user's browser activity and incorporating its properties into the code, in addition to HTML elements.

• 
  Given below is a list of Window properties that JavaScript can take into account:
  
  
  • 
    history — Provides the window's History object.
  
  
  • 
    innerHeight — The content area of a window's inner height.
  
  
  • 
    innerWidth — The content area's inner width.
  
  
  • 
    closed — Returns true or false depending on whether or not a window has been closed.
  
  
  • 
    pageXOffset — The number of pixels offset from the centre of the page. The current document has been horizontally scrolled.
  
  
  • 
    pageYOffset — The number of pixels offset from the centre of the page. The document has been vertically scrolled.
  
  
  • 
    navigator — Returns the window's Navigator object.
  
  
  • 
    opener — Returns a reference to the window that created the window.
  
  
  • 
    outerHeight — A window's total height, including toolbars and scrollbars.
  
  
  • 
    outerWidth — A window's outside width, including toolbars and scrollbars.
  
  
  • 
    defaultStatus — Changes or restores the default text in a window's status bar.
  
  
  • 
    document — Returns the window's document object.
  
  
  • 
    frames — All <iframe> elements in the current window are returned by frames.
  
  
  • 
    length — Determine how many iframe> elements are in the window.
  
  
  • 
    location — Returns the window's location object.
  
  
  • 
    name — Sets or retrieves a window's name.
  
  
  • 
    parent — The current window's parent window is called parent.
  
  
  • 
    screen — Returns the window's Screen object.
  
  
  • 
    screenLeft — The window's horizontal coordinate (relative to the screen)
  
  
  • 
    screenTop — The window's vertical coordinate.
  
  
  • 
    self — Returns the window that is currently open.
  
  
  • 
    status — Changes or restores the text in a window's status bar.
  
  
  • 
    top — Returns the browser window that is currently at the top of the screen.
  
  
  • 
    screenX — Identical to screenLeft, but required by some browsers
  
  
  • 
    screenY — Identical to screenTop, but required by some browsers
  
  
  
  


• 
  Given below are the JavaScript methods which can work on the user's browser window:
  
  
  • 
    alert() — Shows a message and an OK button in an alert box.
  
  
  • 
    setInterval() — Calls a function or evaluates an expression at intervals defined by the user.
  
  
  • 
    setTimeout() — After a specified interval, calls a function or evaluates an expression.
  
  
  • 
    clearInterval() — Removes a timer that was started with setInterval() ()
  
  
  • 
    clearTimeout() — Removes the timer that was set with setTimeout() ()
  
  
  • 
    open() — This method creates a new browser window.
  
  
  • 
    print() — Prints the current window's content.
  
  
  • 
    blur() — Removes the current window's focus.
  
  
  • 
    moveBy() — Repositions a window with respect to its present position.
  
  
  • 
    moveTo() — This function moves a window to a specific location.
  
  
  • 
    close() — This function closes the currently open window.
  
  
  • 
    confirm() — Shows a dialogue box with a message and buttons to OK and Cancel.
  
  
  • 
    focus() — Sets the current window's focus.
  
  
  • 
    scrollBy() — Scrolls the document by a certain amount of pixels.
  
  
  • 
    scrollTo() — Scrolls the document to the supplied coordinates with the scrollTo() method.
  
  
  • 
    prompt() — Shows a conversation window asking for feedback from the visitor.
  
  
  • 
    resizeBy() — Resizes the window by the number of pixels supplied.
  
  
  • 
    resizeTo() — Resizes the window to the width and height supplied.
  
  
  • 
    stop() — This function prevents the window from loading.
  
  
  
  


• 
  Given below is a list of Screen properties that JavaScript can take into account:
  
  
  • 
    height — The screen's entire height.
  
  
  • 
    pixelDepth — The screen's colour resolution in bits per pixel.
  
  
  • 
    width — The screen's entire width.
  
  
  • 
    colorDepth — Gets the colour palette's bit depth for showing images.
  
  
  • 
    availableHeight — Returns the screen's height (excluding the Windows Taskbar).
  
  
  • 
    availableWidth — Returns the screen's width (excluding the Windows Taskbar).