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

jquery set checkbox checked

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

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

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 );
	});