jquery代码显示当前月份的日历，设置可预约、约满、闭馆三种状态样式，可预约状态的日期可以点击并获取日期。

效果参考下图：

HTML代码：

<div class="order">
	<div class="canlendar">
		<div id="tile"></div>
		<div id="calendar">			
		</div>
		<div class="btn">
			<a href="javascript:void(0);" title="立即预约">立即预约</a>
		</div>
	</div>
	<div class="explan">
		<p>
			<span><i class="green"></i></span>
			<span>可预约</span>
		</p>
		<p>
			<span><i class="red"></i></span>
			<span>约满</span>
		</p>
		<p>
			<span><i class="gray"></i></span>
			<span>闭馆</span>
		</p>
	</div>
</div>

CSS代码：

.order {margin-bottom:37px;}
.canlendar {width:511px;}
.canlendar table {font-size:18px;color:#666;text-align:center;line-height:2em;border-color:#dcdcdc;}
.canlendar th {width:14.286%;font-weight:normal;padding:11.5px 5px;border-color:#dcdcdc;background-color:transparent;}
.canlendar td {padding:11.5px 5px;border-color:#dcdcdc;}
#tile {background-color:green;color:#fff;text-align:center;font-size:18px;line-height:2em;padding:7px 5px;}
#calendar {margin-bottom:33px;}
#calendar .active {color:blue;cursor:pointer;}
#calendar .full {cursor:default;color:red;}
#calendar .closed {cursor:default;color:gray;}
#calendar .selected {background-color:blue;color:#fff;}
.btn a {display:block;width:100px;height:34px;line-height:34px;text-align:center;border-radius:5px;background-color:blue;color:#fff;margin:0 auto;}
.btn a:hover {opacity:.75;}
.explan {display:table-cell;vertical-align:middle;font-size:16px;padding-left:55px;color:#666;line-height:1.875em;}
.explan p {padding:9px 0;}
.explan span {display:inline-block;vertical-align:middle;}
.explan i {display:block;width:10px;height:10px;border-radius:50%;margin-right:10px;}
.explan .green {background-color:green;}
.explan .red {background-color:red;}
.explan .gray {background-color:gray;}

jQuery代码：

function setCalendar(getTitle,getOjb,active,full,closed){
	var calendar = getOjb;	
	var date = new Date();	
	var year = date.getFullYear();
	var month = date.getMonth();
	var getMon = month + 1;
	var firstWeek = new Date(year,month,1).getDay();
	var lastWeek = new Date(year,getMon, 0).getDay();
	var days = new Date(year,getMon,0).getDate();
	var table = '<tr>';
	var title = '<tr><th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th>六</th><th>日</th></tr>';
	for(var i=1; i < firstWeek; i++){
	    table += '<td>&nbsp;</td>';
	}
	for(var num = 1; num <= days; num++){
	    table += '<td data-mon="'+getMon+'" data-year="'+year+'">' + num + '</td>';
	    firstWeek++;
	    if(firstWeek % 7 == 1){
	        firstWeek = 1;
	        table += '</tr><tr>';
	    }	   
	    if(num == days){
	    	for(var i=7; i > lastWeek; i--){
				table += '<td>&nbsp;</td>';

			}			
	    }
	}	
	getTitle.text(year + '年' + getMon + '月');
	calendar.html('<table>' + title + table + '</table>');	
	calendar.find('td').each(function(){
		var day = $(this).text();
		if($.inArray(day, active) >= 0){
			$(this).addClass('active');
		}else if($.inArray(day, full) >= 0){
			$(this).addClass('full');
		}else{
			$(this).addClass('closed');
		}
	});
	calendar.find('.active').click(function(){
		$(this).toggleClass('selected').siblings().removeClass('selected').parent().siblings().find('td').removeClass('selected');
	});
}
$(function(){	
	var resTitle = $('#tile');
	var resCalendar = $('#calendar');	
	//可预约日期
	var active = new Array('7','8','9','10','11','12','15','16','17','18');
	//约满日期
	var full = new Array('5','6','13','14');
	//闭馆日期
	var closed = new Array('1','2','3','4','19','20','21');
	
	setCalendar(resTitle,resCalendar,active,full,closed);
	$('.btn a').click(function(){
		if(resCalendar.find('.selected').length > 0){	
			var selected = resCalendar.find('.selected');
			//获取选择的年份
			var getYear = selected.attr('data-year');
			//获取选择的月份
			var getMon = selected.attr('data-mon');
			//获取选择的月份
			var getDay = selected.text();
			//完整日期	
			var getDate = getYear + '-' + getMon + '-' + getDay;			
			alert(getDate+'\n预约功能待开发...');
		}else{
			alert('请选择日期');
		}
	});
});

以上样式根据自己所需调整。