Answers for "how to get checked and unchecked checkbox value in jquery"

jquery set checkbox checked unchecked

//jQuery 1.6+ use
$('.checkbox').prop('checked', true);  //false for uncheck
//jQuery 1.5.x and below use
$('.checkbox').attr('checked', true);  //false for uncheck

get unchecked checkbox jquery

if ($("#check_box_id").is(':checked')) {
  alert("checked");
}else{
  alert("unchecked");
}

jquery checkbox unchecked

$("input:radio[name='NAME']:radio[value='VALUE']").attr("checked",true);
$("input:radio[name='NAME']").removeAttr("checked");

how to get checked and unchecked checkbox value in jquery

$('#submit').click(function(){
		var redval = $('.red').val();
		var grenval = $('.green').val();
		$('.showCheckedValue').text(redval+'&'+grenval );
	});