checkbox checked

验证规则：$("#regprotrol").prop("checked") == true

regprotrol : function (element, param, field) {
                //if ($('#checkbox-id').attr('checked')) {
                    if($("#regprotrol").prop("checked") == true){
                        return true;
                    }else{
                        return "请接受服务条款";
                    }
            }

http://www.google.com.hk/#newwindow=1&q=jquery+checkbox+prop&safe=strict