select all checkbox only works twice

Question

I got this code from stackoverflow which looks like a pretty good \"select all\" checkbox solution, any ideas why it fails after 2nd click?

http://jsfiddle.net/R9zj

Answer 1

some problem is solved see the live demo at here

HTML code is:

    

        

            
        
        

            
        
        

            
        
        

            select all 
        
    

and Javascript is:

$(document).ready(function () {
    $(document).on("click", ".selectall2", function () {
        $(this).closest('tr').find('input[type=checkbox]').attr('checked', this.checked);
    });
    $(document).on("click",".abc",function(){
        var temp=0;
        if(!$(".abc").attr('checked'))
        {
            temp=1;
        }
        if(temp==0)
        {
                    $(".selectall2").attr('checked',true);
        }
        else
        {
                    $(".selectall2").attr('checked',false);
        }
    });
});