Question

I’ve a field in the form,trying to get this value using jquery.It is always returning null.

Where am i going wrong ?

Here is what i tried http://jsfiddle.net/9gJGM/

Answer 1

The value parameter is shown in the alert, which you have left blank!

HTML

<input type="text" name="category" id="category" value="myValue"/>​

JS

var  productCategor =  $("#category").val();
           alert(productCategor);​

EDIT
In order to change the value of the textbox dynamically using JS, you can use the following.

$("#category").val("abcd");​

This works on my browsers. If you leave the value parameter empty, you are bound to get a blank returned on your alert.

EDIT2
This is the right way to do it.

<input type="text" name="category" id="category"/>
<input type="button" value="hit" onClick="hit();"/>

function hit(){
var  productCategor =  $("#category").val();
    alert(productCategor);
}