Q:

add listener to asp.net control using jquery

I have a checkbook list and text box and drop down list I want to check if the user interact with any of them and they have a value too using j query to apply style on another elements any help ?

A:

You can use Jquery like this :
Markup : 
<asp:textbox ID='text1' runat='server' Text="a value"></asp:textbox>

Jquery Code :
$("#<%= text1.ClientID %>").live('change',function(){

    if($(this).val() != "")
        //Do Somthing

});

for checkbox : 
$("#<%= checkbox1.ClientID %>").live('click',function(){

    if($(this).is(':checked') != "")
        //Do Somthing

});

