Window Object

The window object represents a window in browser. An object of window is created automatically by the browser.

Window is the object of browser, it is not the object of javascript. The javascript objects are string, array, date etc.

Note: if html document contains frame or iframe, browser creates additional window objects for each frame.

Methods of window object

The important methods of window object are as follows:

Example of alert() in javascript

It displays alert dialog box. It has message and ok button.

Output of the above example

Example of confirm() in javascript

It displays the confirm dialog box. It has message with ok and cancel buttons.

Output of the above example

Example of prompt() in javascript

It displays prompt dialog box for input. It has message and textfield.

Output of the above example

Example of open() in javascript

It displays the content in a new window.

Output of the above example

Example of setTimeout() in javascript

It performs its task after the given milliseconds.

Output of the above example