http://polaris.umuc.edu/~flazarus/
JavaScript Placement
There are two types of JavaScripts, delayed and immediate. Delayed
scripts are placed within the <head> tags and immediate scripts
within the <body> tags. The delayed scripts are called one or more
times from constructs placed within the body tags. Immediate scripts
execute when the browser reaches their placement point on the page.
An example of a call to a delayed script is shown below.
An example of an immediate script can seen as the 'last update'
script that I use on most pages.
A variation on an immediate script that is included within the
<head> tags rather than within the <body> tags is the
'no capture' script that I often use. This approach is used when
you want the script to execute before the page writes. This is an
implicit onLoad event handler.
One additional note. JavaScripts can be written as separate files
with .js extensions and called or can be explicitly written into the
HTML page. I use the former approach for scripts that I use very often
on my pages. The 'last update' is an example of this.
Please click 'view' to see these constructs. Note: If you are
using Netscape you will see only the result of the 'last update' script.
An unfortunate 'feature' of Netscape.
You might want to consider taking a JavaScript class. See:
Programming with JavaScript.
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