I'm using jQuery version 1.8.0 and I'm getting error message as "Uncaught Error: Syntax error, unrecognized expression: unchecked"
jQuery changed unchecked to prop('checked',false) .I tried changing my code but, its not working.
if($('input[name='+family+']:unchecked').length){
}
I replaced this to
if($('input[name='+family+']).prop('checked',false).length){
}