Chapter 10. It’s the BOM! Browser Objects
10.1 JavaScript and the Browser Object Model
JavaScript programs are associated with a browser window and the document displayed in the window. The window is a browser object and the document is an HTML object. In the browser object model, sometimes called BOM, the window is at the top of the tree, and below it are objects: window, navigator, frames[], document, history, location, and screen. See Figure 10.1.
Figure 10.1 The hierarchy of the browser object model.
If you are writing a JavaScript program ...
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