Introduction Jquery

JQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML. It was released in January 2006 at BarCamp NYC by John Resig. Used by over 46% of the 10,000 most visited websites, jQuery is the most popular JavaScript library in use today.

source: http://en.wikipedia.org/wiki/JQuery

I don't quite familiar to the Jquery, since I work on basic php and ignore the js code. But the user need something to make the page more dinamic, the answer is javascript.

Is Hard actualy create the first js script... but using Jquery all seem simple..well I think?
Jquery is happen to decrease the coding in js, and is work for me?!? okay just an example

KAT 1:&nbsp;<input type="text" id="KAT1" name="KAT1" /><br  /> 
KAT 2:&nbsp;<input type="text" id="KAT2" name="KAT2" /><br  /> 

using javascript we can have value from text by type this

var KAT1=document.form_latihan.KAT1.value;

when we type as jquery

$("#KAT1").val();

short and decrease our time to type the code