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JavaScript is
a versatile scripting language that permits you to
extend the capabilities of your web pages beyond traditional
HTML. JavaScript makes dynamic features such
as button rollovers, animation, browser version and
type detection, Plug-in detection, and a number of
other effects possible. JavaScript is part of
what is currently known as Dynamic HTML (DHTML), even
though it is not HTML. However, it controls and
modifies HTML elements, such as the swapping of graphic
images.
JavaScript operates
client-side, meaning it does not run a separate executable
file outside the browser, as is the case with JAVA.
Rather the script or code is part of your web page
or HTML document and is run by the browser.
(Figure 13.1)
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