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JavaScript Window - The Browser Object Model

The Browser Object Model (BOM) allows JavaScript to "talk to" the browser. The window object represents a window containing a DOM document. A window can be the main window, a frame set or individual frame, or even a new window created with JavaScript.
JavaScript Window - The Browser Object Model

There are no official standards for the Browser Object Model (BOM).

Since modern browsers have implemented (almost) the same methods and properties for JavaScript interactivity, it is often referred to, as methods and properties of the BOM.

The Window Object

The window object is supported by all browsers. It represents the browser's window.

All global JavaScript objects, functions, and variables automatically become members of the window object.

Global variables are properties of the window object.

Global functions are methods of the window object.

Even the document object (of the HTML DOM) is a property of the window object.


is the same as:


Some other methods:

  • window.open() - open a new window
  • window.close() - close the current window
  • window.moveTo() - move the current window
  • window.resizeTo() - resize the current window
JavaScript Window

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