In addition to the objects we have seen in the previous chapters there are browser objects.
These objects deal with the characteristic and properties of the web browser.
These browser objects are arranged with parent child relationship. The following diagram shows the hierarchy of
browser object.
Hierarchy Diagram of Browser Objects
Window Object is the topmost and all other objects precede it. Browser Objects document, history and navigator
form the next order in the hierarchy. We will look deep in to each object in the coming chapters.
Window being the topmost object doesn't require any reference while using its child objects. E.g:
for making an alert, its enough if we call document.alert(), it's not required to use
window.document.alert().
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Introduction
