基于zepto.js 的日期选择插件

展示：

 

js 代码：

Zepto.datepicker = function(target){	
	var datepicker = {
		init : function(){
			this._target = target;			
			this._date = new Date();
			this._formatDate();
		},
		bind: function(){
			this._picker = (function(){
				var arr = [];
				arr.push('<div class="datepicker-box">');
				arr.push('	<div class="datepicker-header">');
				arr.push('		<span class="datepicker-pre"><b></b></span>');
				arr.push('		<span class="datepicker-next"><b></b></span>');
				arr.push('		<h4></h4>');
				arr.push('	</div>');
				arr.push('	<table class="datepicker-body">');
				arr.push('		<thead>');
				arr.push('			<tr>');
				arr.push('				<th>一</th><th>二</th><th>三</th><th>四</th><th>五</th><th class="datepicker-weekend">六</th><th class="datepicker-weekend">日</th>');
				arr.push('			</tr>');
				arr.push('		</thead>');
				arr.push('		<tbody>');
				arr.push('		</tbody>');
				arr.push('	</table>');
				arr.push('</div>');
				return $(arr.join(''));
			})();
			this._generateDays();
	
			var p = this;
			this._picker.find('span').on('touchstart', function(){
				$(this).addClass('hover');
			}).on('touchend', function(){
				$(this).removeClass('hover');
			}).click(function(){
				if($(this).hasClass('datepicker-pre')){
					p._date.setMonth(p._date.getMonth() - 1);
				} else {
					p._date.setMonth(p._date.getMonth() + 1);
				}				
				p._generateDays();
			});			
			
			this._picker.click(function(e){
				e.preventDefault();
				e.stopPropagation();
			});
			
			$(document).click(function(e){
				if(e.target != p._picker[0] && e.target != p._target[0]){
					p._picker.hide();
				}
			});
			return this;
		},
		insert : function(){
			this._picker.insertAfter(this._target);
		},
		show : function(){
			this._picker.show();
		},
		hide : function(){
			this._picker.hide();
		},
		_generateDays : function(){
			var year = this._date.getFullYear()
				, month = this._date.getMonth() + 1
				, day = this._date.getDate()
				, days = new Date(new Date(year, month, 1) - 24*60*60*1000).getDate()
				, week = (function(){
						var tDate = new Date(year, month-1, 1);
						var week = tDate.getDay();
						if(week == 0){
							week = 7;
						}
						return week;
					})();
					
			this._picker.find('h4').html(year + ' 年 ' + month + ' 月');
	
			var arr = []
				, d = 1;
				
			arr.push('<tr>');
			for(var j = 1; j < week; j ++){
				arr.push('<td>&nbsp;</td>');
			}
			for(var j = week; j < 8; j ++, d ++){
				arr.push('<td class="datepicker-td');
				if(d == day){
					arr.push(' cur');
				}
				if(j >= 6){
					arr.push(' datepicker-weekend');
				}
				arr.push('">');
				arr.push(d);
				arr.push('</td>');
			}
			arr.push('</tr>');
			
			for(var i = 0, l = Math.ceil((days + week) / 7) - 2; i < l; i ++){			
				arr.push('<tr>');
				for(var j = 1; j < 8; j ++, d ++){
					arr.push('<td class="datepicker-td');
					if(d == day){
						arr.push(' cur');
					}
					if(j >= 6){
						arr.push(' datepicker-weekend');
					}
					arr.push('">');
					arr.push(d);
					arr.push('</td>');
				}
				arr.push('</tr>');
			}
			
			var l = days - d + 1;
			if(l != 0){
				arr.push('<tr>');
				for(var i = 0; i < l; i ++, d ++){
					arr.push('<td class="datepicker-td');
					if(d == day){
						arr.push(' cur');
					}
					if(i >= 6){
						arr.push(' datepicker-weekend');
					}
					arr.push('">');
					arr.push(d);
					arr.push('</td>');
				}
				for(var i = l + 1; i < 8; i ++){
					arr.push('<td>&nbsp;</td>');
				}
				arr.push('</tr>');
			}
			this._picker.find('tbody')[0].innerHTML = arr.join('');
			
			var p = this;
			this._picker.find('.datepicker-td').unbind().on('touchstart', function(){
				$(this).addClass('hover');
			}).on('touchend', function(){
				$(this).removeClass('hover');
			}).click(function(){
				p._picker.find('.datepicker-td').removeClass('cur');
				$(this).addClass('cur');
				var day = parseInt($(this).text(), 10);
				p._date = new Date(year, month - 1, day);
				p.hide();
				p._formatDate();
			});
		},
		_formatDate: function(){
			var weekDays = ['日', '一', '二', '三', '四', '五', '六'];
			this._target.text(this._date.getFullYear() + '年' + (this._date.getMonth() + 1) + '月' + this._date.getDate() + '日（周' + weekDays[this._date.getDay()] + '）');
		}
	};
	
	datepicker.init();
	
	var initialised = false;
	
	var self = this;
	target.click(function(){
		if(!initialised){
			datepicker.bind().insert();
			initialised = true;
		}
		datepicker.show();
	});
};

$.fn.datepicker = function(options){
	$.datepicker(this);
};

样式：

.datapicker{background:url(../img/datapicker.gif) no-repeat 230px center #FFF;}
.datepicker-box{position:relative;top:-36px;left:0;margin-bottom:-36px;border:1px solid #d9d9d9;}

.datepicker-header{background:#F8F8F8;border-bottom:1px solid #EEE;}
.datepicker-header span{text-align:center;padding:12px 15px 10px;}
.datepicker-header span.hover{background:#EEE;}
.datepicker-header span b{display:block;width:0;height:0;font-size:0;border:8px solid #F8F8F8;}
.datepicker-pre{float:left;}
.datepicker-next{float:right;}

.datepicker-header span.datepicker-pre b{border-left:0;border-right:8px solid #444;}
.datepicker-header span.datepicker-next b{border-right:0;border-left:8px solid #444;}
.datepicker-header h4{padding:10px 0;height:20px;line-height:20px;text-align:center;font-size:16px;font-weight:normal;}

.datepicker-body{width:100%;border:0;border-collapse:collapse;border-spacing:0;}
.datepicker-body th, .datepicker-body td{height:20px;line-height:20px;text-align:center;font-size:14px;}
.datepicker-body th.datepicker-weekend, .datepicker-body td.datepicker-weekend{color:#FF0000;}
.datepicker-body th{padding:6px 0;font-weight:normal;color:#333;}
.datepicker-body td{padding:4px 0;}
.datepicker-body td.cur{background:#DDD;border:1px solid #CCC;color:#FFF;}