Installing jQuery?
Get jQuery up and running in a minute or less:
Insert this into your HTML (most commonly in the head, but you can throw it before the end body tag too):
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
Then place a script element after your jQuery one. This would alert 'hello' after the DOM is ready.
<script>$(function() { alert('hello') });</script>
Read the documentation.
Using jQuery locally:
After you get a feel, try downloading jQuery locally to your computer, and link it from your script file. The structure is like so:
C:/web/index.html
C:/web/js/jquery.js
index.html:
<head>
<script src="js/jquery.js"></script>
<script>$(function() { alert('hi') })</script>
</head>
You have the advantage of relying on your saved version offline if you don't have the Internet/Wi-Fi. You can also make custom edits to the jQuery source and modify it at will.
Study the jQuery source [advanced]
Download the uncompressed version from:
http://code.jquery.com/jquery-latest.js
After you've gained a bit of JavaScript/DOM knowledge try to take it apart step by step.
There is no installation per se.
You download jQuery and include it in your html files like this:
<script src="jquery.js" type="text/javascript"></script>
Of course, modify the filename so that it's the same as the downloaded script file.
Done!
The following steps can be followed
1) Download Jquery by clicking on this link DOWNLOAD
2) Copy the js file into your root web directory eg. www.test.com/jquery-1.3.2.min.js
3) In your index.php or index.html between the head tags include the following code, and then JQuery will be installed.
<script type="text/javascript" src="jquery-1.3.2.min.js"></script>