以前写的多选日期控件，给大家分享下

今天整理资料发现了！还是以前写的，刚刚接触的jquery。和大家分享下思路

function Calendar(config){

	config=config||{};
	if((typeof config)!="object"){
		return;
	}
	for(var p in config){
		this[p]=config[p];
	}
	this.datas=new Map();
	//this.datasId="guestCalendar";
	this.selectDay=null;
	this.selectTime=null;
	this.selectKey=null;
	var DOC=document,getElement=function(id){return DOC.getElementById(id);};
	//对应的ids 0 显示年的  1 显示 月的 2 显示天的
	this.calendarIds=['easyJsYear','easyJsMonth','easyJsShowDate'];
	this.init=function(){
		var d=new Date();
		this.currentMonth=d.getMonth()+1;
		this.currentYear=d.getFullYear();
		d=null;
	};
	this.initShowCalendar=function(){
		this.year=this.currentYear;
		this.month=this.currentMonth;
		this.showYearMonth();
		this.showDate();
	};
	//o {year:2011} or {month:10}
	this.changeShowCalendar=function(o){
		var obj=o;
		if(obj.year){
			if(this.year+obj.year<1990){
				return;
			}
			this.year=this.year+obj.year;
		}
		if(obj.month){
			if(this.month+obj.month>12||this.month+obj.month<1){
				return;
			}
			this.month=this.month+obj.month;
		}
		this.showYearMonth();
		this.showDate();
	};
	this.showYearMonth=function (){
		$("#"+this.calendarIds[0]).html(this.year+"年");
		$("#"+this.calendarIds[1]).html(this.month+"月");
	};
	this.showDate=function(){		
		var y = this.year, m = this.month;
		//判断当月有跨越几周
		var week=Math.ceil((new Date(y, m, 0).getDate() + new Date(y, m - 1, 1).getDay()) / 7);
		//当月开始是星期几
		var start_week=new Date(y, m - 1, 1).getDay();
		//当月结束是星期几
		var end_week=new Date(y, m, 0).getDay();
		//当前月有多少天
		var lastDate=new Date(y, m, 0).getDate();
		
		var tempdate=0,vName=this;		
		var parent=getElement(this.calendarIds[2]);
		removeAllNodes(this.calendarIds[2]);
		for(var i=0;i<week;i++){
			var tr=DOC.createElement("tr");
			for(var ii=0;ii<7;ii++){
				var td=DOC.createElement("td");
				td.className="nEasyJsWeekTd";
				tr.appendChild(td);
				if(i==0){
					if(ii<start_week){
						continue;
					}					
				}else if(i==(week-1)){
					if(ii>end_week){
						continue;
					}
				}
				tempdate++;
				var tkey=parseInt(""+this.year+(this.month.toString().length>1?this.month:"0"+this.month)+(tempdate.toString().length>1?tempdate:"0"+tempdate));
				if(this.datas.containsKey(tkey)){
					td.className="sEasyJsWeekTd";
				}
				td.onclick = function(o){vName.chanageDate(this);};//兼容ie6
				td.innerHTML=tempdate;					
			}
			parent.appendChild(tr);
		}	
		
	};
	this.GenerateCalender=function(){
		DOC.write('<div id="easyJsCalendarDate" class="easyJsCalendarDate" style="display:none">');
		DOC.write('<div class="easyJsYearMonth"><table width="100%" border="0" cellspacing="1" cellpadding="1"><tr><td onclick="'+this.varName+'.changeYear(-1)">&lt;&lt;</td><td onclick="'+this.varName+'.changeMonth(-1)">&lt;</td><td id="easyJsYear"></td><td id="easyJsMonth"></td><td onclick="'+this.varName+'.changeMonth(1)">&gt;</td><td onclick="'+this.varName+'.changeYear(1)">&gt;&gt;</td></tr></table></div>');
		DOC.write(' <div class="easyJsWeek"><table width="100%" border="0" cellspacing="1" bgcolor="#CCCCCC" cellpadding="1"><tr><th scope="col">日</th><th scope="col">一</th><th scope="col">二</th><th scope="col">三</th><th scope="col">四</th><th scope="col">五</th><th scope="col">六</th></tr><tbody id="easyJsShowDate"></tbody>');
		DOC.write('<tr><td onclick="'+this.varName+'.showToday()" colspan="3">今天</td><td onclick="'+this.varName+'.closeDateWindow()" colspan="3">关闭</td><td onclick="resetCalendarTimeForm()">c</td></tr></table></div></div>');
	};
	this.changeMonth=function(type){
		this.changeShowCalendar({month:type});
	};
	this.changeYear=function(type){
		this.changeShowCalendar({year:type});
	};
	this.showToday=function(){
		this.initShowCalendar();
	};
	this.closeDateWindow=function(){
		$("#easyJsCalendarDate").hide();
	};
	
	this.setDatasInPage=function(){
		var d=this.datas;
		var s=this.datas.toString(
			function(key,values){				
				return values;	
			}
		);
		var enter=getElement(this.enter);
		if(enter.nodeName=='INPUT'){
			enter.value=s;
		}else
		  enter.innerHTML=s;
	};
	this.clearTimePickerSelect=function(){
		for(var i=0;i<24;i++){
			this.selectTime.splice(i,1,-1);
		}
		var table=getElement("easyJsCalendarTimeTable");
		for(var j=0;j<4;j++){
			var tr=table.rows[j];
			for(var k=0;k<6;k++){
				tr.cells[k].className="cEasyJsCalenderTimeTd";
			}
		}
	};
	
	this.setStyleProperty=function(o,name,value){
		o.style[name]=value;
	};
	this.chanageDate=function(o){
		this.selectDay=o;
		var tmonth=this.month.toString().length>1?this.month:"0"+this.month,tday=this.selectDay.innerHTML.length>1?this.selectDay.innerHTML:"0"+this.selectDay.innerHTML;
		this.selectKey=parseInt(this.year+""+tmonth+""+tday);
		var selectValue=this.year+"-"+tmonth+"-"+tday;
		if(this.datas.containsKey(this.selectKey)){
			this.selectTime=this.datas.get(this.selectKey);
			this.datas.remove(this.selectKey);
			this.selectDay.className="nEasyJsWeekTd";
		}else{
			this.datas.modify(this.selectKey,selectValue,true);
			this.selectDay.className="sEasyJsWeekTd";
		}
		this.setDatasInPage();
	};

	this.triggerEvent=function(){
		if(this.trigger){
			var t=this;
			$("#"+this.trigger).click(function(e) {
             $("#easyJsCalendarDate").css("position","absolute").css("top", e.pageY+ "px").css("left", e.pageX + "px");
			 t.showDatePicker();
         	});			
		}
	};
	this.showDatePicker=function(id){
		$("#easyJsCalendarDate").show();
	};
	this.putDatas=function(){
		if(this.dataMaps){
			this.dataMaps.put(this.dataKey,this.datas);
		}
	}
	this.setDates=function(key){
		if(!this.dataMaps){
			this.dataMaps=new Map();
		}
		this.dataKey=key;
		if(this.dataMaps.containsKey(key)){
			this.datas=this.dataMaps.get(key);
		}else{
			this.datas=new Map();
		}		
	}
	this.GenerateCalender();
	this.init();
	this.initShowCalendar();
	this.triggerEvent();
}

下面是用的的相关function

/*
 * Map对象，实现Map功能
 *
 *
 * size() 获取Map元素个数
 * isEmpty() 判断Map是否为空
 * clear() 删除Map所有元素
 * put(key, value) 向Map中增加元素（key, value)  
 * remove(key) 删除指定key的元素，并返回该key的value
 * get(key) 获取指定key的元素值value
 * modify(key,value,auto) 修改key的value.如果auto为true,key不存在,会将key和value添加为新值;为false,key不存在将不进行添加
 * containsKey(key) 判断Map中是否含有指定key的元素
 * containsValue(value) 判断Map中是否含有指定value的元素
 * keys() 获取Map中所有key的数组（array）
 * values() 获取Map中所有value的数组（array）
 *
 */



function Map(){
	/**
	 *初始化datas
	 */
	this.initialize=function(){
		this.datas=new Object();
	}
	
	/**  
     * 得到datas中的对象数目  
     */  
    this.size=function() {     
        var i = 0;
        for(var ele in this.datas) {   
            i ++;   
        }   
        return i;   
    };  
	this.isEmpty=function(){
		return this.size()>0?false:true;
	};
	this.clear=function(){		
        for(var key in this.datas) {   
            delete this.datas[key];   
        }   
	};
	this.put=function(key, value) {
		return this.datas[key] = value;
	}
	this.remove=function(key) {
    	var value = this.datas[key];
    	delete this.datas[key];
    	return value;
    };
	this.get=function(key) {
		if (this.datas[key] !== Object.prototype[key])
		  return this.datas[key];
	};
	this.modify=function(key,value,auto){
		if(this.containsKey(key)){
			this.remove(key);
			this.put(key,value);
		}else{
			if(auto){
				this.put(key,value);
			}
		}
	};
	this.containsKey=function(key){
		if(key in this.datas){
			return true;
		}
		return false;
	};
	this.containsValue=function(value){
		var r=false;
		for(var key in this.datas){
			if(this.datas[key]==value){
				r=true;
				break;
			}
		}
		return r;
	}
	this.keys=function() {
		return this.pluck('key');
	};
	this.values=function() {
		return this.pluck('value');
	};
	
	/**  
     * 遍历Map,执行处理函数   
     * @param {Function} 回调函数 function(arrary){..}  
     */  
	this.each=function(fn){
		for (var key in this.object) {
		  var value = this.object[key], pair = [key, value];
		  pair.key = key;
		  pair.value = value;
		  fn(pair);
		}
	};
		
	/**  
     * 返回object的对象的复制  
     */ 	
	this.toObject=function(){
		var destination={};
		for (var property in this.datas)
			destination[property] = this.datas[property];
		return destination;
    };
	
	this.pluck=function(property) {
		var results = [];
		for(var key in this.datas){
			if(property=='key'){
				results.push(key);
			}else if(property=='value'){
				results.push(this.datas[key]);
			}
		}
		return results;
	};
	
	
	
       
    /**  
     * toString方法 
	 * fn是调用函数
     */  
    this.toString=function(fn) {   
        var b = this.datas;   
        var buf = [];   
        for(var key in b) {   
            buf.push(fn(key,b[key]));    
            buf.push('\n');   
        }   
        return buf.join('');   
    };
	
	this.formatToString=function(fn){
		var keys=this.keys();
		//function sortNumber(a,b){return a - b} 从小到大 ；function sortNumber(a,b){return b - a} 从大到小
		keys.sort(function sortNumber(a,b){return a - b});
		var buf=[];
		for(var i=0;i<keys.length;i++){
			buf.push(fn(keys[i],this.datas[keys[i]]));
			buf.push("\n");
		}
		return buf.join('');
	};
	
	this.initialize(); 
}

function StringBuffer(){
	
	this.array=[];
	this.append=function(string){
		this.array.push(string);
	}
	this.toString=function(){
		return this.array.join("");
	}
}
//删除该id下的所有节点
function removeAllNodes(id){
	var parent=document.getElementById(id);
    while(parent.childNodes.length>0) {
        parent.removeChild(parent.childNodes[0]);
    }
}

在页面调用

<body>
<textarea id="guestCalendar"  style="height:100px; width:200px;"></textarea>
<input id="trigger" value="日期" type="button"/>
<script>


var datePicker=new Calendar({
	enter:'guestCalendar',//显示值的的id  
	trigger:"trigger"  //触发控件id，该控件要支持click
});
</script>
</body>