简易纯JS日期控件

无聊，做了个纯JS的日期控件，JS动态生成CSS，可兼容大部分浏览器，直接JS引用即可使用，引用方式在JS最下面，可自行修改

 

猥琐的效果图_JS日历控件

 

js源文件：

// JavaScript Document
(function(){
	var $=function(id){return document.getElementById(id);}
	var DateTime=function(obj,evs){
		if(!obj) return false;
		this.obj=obj;
		this.evs=evs?evs:null;
		this.id='datetime_by_mn_2011';
		this.date=isNaN(+new Date(this.obj.value.replace(/-/g,'/')))?new Date():new Date(this.obj.value.replace(/-/g,'/'));
		this.dayNum=42;
		this.year=this.date.getFullYear();
		this.month=this.date.getMonth();
		this.today=this.date.getDate();
		this.week=['日','一','二','三','四','五','六'];

		this._check=this.id+'_check';
		this._checkB=this.id+'_check_blur';
		this._year=this.id+'_year';
		this._yearPre=this.id+'_yearPre';
		this._yearNex=this.id+'_yearNex';
		this._yearMore=this.id+'_yearMore';
		this._month=this.id+'_month';
		this._monthPre=this.id+'_monthPre';
		this._monthNex=this.id+'_monthNex';
		this._monthMore=this.id+'_monthMore';
		this._newDays=this.id+'_newDays';
		this._today=this.id+'_today';
		this._close=this.id+'_close';
	}
	DateTime.prototype={
		init:function(){
			if(!this.obj) return false;
			this.createCss();
			this.createCheck();
			this.createDate();
			this.createFn();
		},
		formatNum:function(v){
			return (!isNaN(parseFloat(v))&&parseFloat(v)<10)?'0'+parseFloat(v):v;
		},
		offset:function(obj,event){
			var top=0,left=0,width=obj.offsetWidth||0,height=obj.offsetHeight||0,ev=window.event||event,outs;
			while(obj!= null){
				top+=obj.offsetTop||0;
				left+=obj.offsetLeft||0;
				obj=obj.offsetParent;
			}
			if(ev) outs=ev.clientX<left||ev.clientX>(left+width)||ev.clientY<top||ev.clientY>(top+height);
			return {top:top,left:left,width:width,height:height,out:outs};
		},
		createCheck:function(){
			if(!$(this._check)){
				var inp=document.createElement('input');
				inp.type='hidden';
				inp.id=this._check;
				document.body.appendChild(inp);
			}
		},
		createDate:function(){
			if(!$(this.id)){
				var dateDiv=document.createElement('div');
				dateDiv.id=this.id;
				dateDiv.style.display='none';
				dateDiv.innerHTML=this.createHead();
				dateDiv.innerHTML+=this.createWeek();
				dateDiv.innerHTML+='<ul id="'+this._newDays+'">'+this.createDays()+'</ul>';
				dateDiv.innerHTML+=this.createFoot();
				document.body.appendChild(dateDiv);
				dateDiv.style.cssText='';
			}
		},
		createHead:function(){
			var text='<ul>';
			text+='<li class="change"><a href="javascript:;" id="'+this._yearPre+'">&lt;&lt;</a></li>';
			text+='<li class="change"><a href="javascript:;" id="'+this._monthPre+'">&lt;</a></li>';
			text+='<li class="sel_time"><a href="javascript:;" id="'+this._year+'">'+this.date.getFullYear()+'</a>'+this.createMore('year')+'</li>';
			text+='<li class="sel_time"><a href="javascript:;" id="'+this._month+'">'+this.formatNum((this.date.getMonth()+1))+'</a>'+this.createMore('month')+'</li>';
			text+='<li class="change"><a href="javascript:;" id="'+this._monthNex+'">&gt;</a></li>';
			text+='<li class="change"><a href="javascript:;" id="'+this._yearNex+'">&gt;&gt;</a></li>';
			text+='</ul>';
			return text;
		},
		createMore:function(YM){
			var text='';
			if(YM=='year'){
				text+='<ul id="'+this._yearMore+'" class="sel_more">';
				for(var i=1900;i<=this.year+20;i++){
					text+='<li><a href="javascript:;">'+i+'</a></li>';
				}
			}else{
				text+='<ul id="'+this._monthMore+'" class="sel_more">';
				for(var i=1;i<13;i++){
					text+='<li><a href="javascript:;">'+this.formatNum(i)+'</a></li>';
				}
			}
			text+='</ul>';
			return text;
		},
		createWeek:function(){
			var text='<ul class="week">',style='';
			for(var i in this.week){
				style=(i==0||i==6)?' class="bg"':'';
				text+='<li'+style+'>'+this.week[i]+'</li>';
			}
			text+='</ul>'
			return text;
		},
		createDays:function(){
			this.date.setDate(1);
			var text='',dayOn='',YMOn=(this.date.getFullYear()==this.year&&this.date.getMonth()==this.month)?' class="on"':'',num=0;
			for(var i=0,l=this.date.getDay();i<l;i++){
				text+='<li></li>';
				num++;
			}
			for(var d=1,ds=this.checkDays();d<=ds;d++){
				dayOn=(d==this.today)?YMOn:'';
				text+='<li'+dayOn+'><a href="javascript:;">'+d+'</a></li>';
				num++;
			}
			for(var c=0,cn=this.dayNum-num;c<cn;c++){text+='<li></li>'}
			return text;
		},
		checkDays:function(){
			var days=(this.date.getMonth()==3||this.date.getMonth()==5||this.date.getMonth()==8||this.date.getMonth()==10)?30:(this.date.getMonth()==1)?(this.date.getFullYear()%4!=0)?28:29:31;
			return days;
		},
		createFoot:function(){
			var text='<ul class="bg">',
			date=new Date();
			text+='<li class="today"><a href="javascript:;" id="'+this.id+'_today">今天 '+date.getFullYear()+'-'+this.formatNum(date.getMonth()+1)+'-'+this.formatNum(date.getDate())+'</a></li>';
			text+='<li><a href="javascript:;" id="'+this._close+'">&times;</a></li>';
			text+='</ul>';
			return text;
		},
		createCss:function(){
			if(!$(this.id+'_check')){
				var css,style='';
				style+='#'+this.id+'{width:210px; background:#fff; border:1px solid #0CF; font-size:12px; line-height:20px; position:absolute; text-align:center; top:'+(this.offset(this.obj).top+this.offset(this.obj).height)+'px; left:'+this.offset(this.obj).left+'px; z-index:9999;}';
				style+='#'+this.id+' a{width:100%; height:20px; color:#000; display:block; outline:none; text-decoration:none;}';
				style+='#'+this.id+' a:hover{background:#d9fafc;}';
				style+='#'+this.id+' ul{clear:both; margin:0; padding:0;}';
				style+='#'+this.id+' li{width:30px; height:20px; list-style:none; float:left;}';
				style+='#'+this.id+' li.on{background:#ebfeff;}';
				style+='#'+this.id+' .bg li{background:#fbfbfb;}';
				style+='#'+this.id+' .change{width:20px;}';
				style+='#'+this.id+' .sel_time{width:65px; position:relative;}';
				style+='#'+this.id+' .sel_more{width:63px; height:120px; background:#fff; border:1px solid #0FF; display:none; position:absolute; top:0px; left:0px; overflow:auto; overflow-x:hidden;}';
				style+='#'+this.id+' .sel_more li{width:100%; background:#FFF;}';
				style+='#'+this.id+' .sel_more a.on{background:#ebfeff;}';
				style+='* html #'+this.id+' .sel_more li{width:80%;}';
				style+='#'+this.id+' .week li{background:#d9fafc; font-weight:bold;}';
				style+='#'+this.id+' .week li.bg{background:#fdfdde;}';
				style+='#'+this.id+' .today{width:180px;}';
				if(!-[1,]){
					css=document.createStyleSheet();
					css.cssText=style;
				}else{
					css=document.createElement('style');
					css.type='text/css';
					css.innerHTML=style;
					document.getElementsByTagName("head")[0].appendChild(css); 
				}
			}
		},
		createFn:function(){
			if(!$(this.id)) return false;
			var _method=this;
			this.chooseYM('year');
			this.chooseYM('month');
			$(this._today).οnclick=function(){
				_method.obj.value=this.innerHTML.replace('今天 ','');
				_method.removeDate();
			}
			$(this._close).οnclick=function(){
				_method.removeDate();
			}
			$(this._newDays).οnclick=function(event){
				var ev=window.event||event;
				ev=ev.target||ev.srcElement;
				if(ev.tagName!='A') return false;
				_method.obj.value=$(_method._year).innerHTML+'-'+$(_method._month).innerHTML+'-'+_method.formatNum(ev.innerHTML);
				_method.removeDate();
			}
			document.οnclick=function(e){
				if(!$(_method.id)) return false;
				var dateDivMap=_method.offset($(_method.id),e).out,
				objMap=_method.offset(_method.obj,e).out,
				evsMap=!_method.evs?true:_method.offset(_method.evs,e).out;

				if(dateDivMap&&objMap&&evsMap) _method.removeDate();
			}
		},
		chooseYM:function(YM){
			var _method=this,
			nows=YM=='year'?this._year:this._month,
			nowPre=YM=='year'?this._yearPre:this._monthPre,
			nowNex=YM=='year'?this._yearNex:this._monthNex,
			nowMore=YM=='year'?this._yearMore:this._monthMore;
			$(nows).οnclick=function(){
				$(_method._yearMore).style.display='none';
				$(_method._monthMore).style.display='none';
				$(nowMore).style.display='block';
				var moreA=$(nowMore).getElementsByTagName('a');
				for(var i=0,l=moreA.length;i<l;i++){
					if(moreA[i].innerHTML==$(nows).innerHTML){
						$(nowMore).scrollTop=i*20;
						moreA[i].className='on';
					}else{
						moreA[i].className='';
					}
				}
			}
			$(nowMore).οnmοuseοut=function(e){
				var moreMap=_method.offset(this,e).out;
				if(moreMap) this.style.display='none';
			}
			$(nowMore).οnclick=function(event){
				var ev=window.event||event;
				ev=ev.target||ev.srcElement;
				$(nows).innerHTML=ev.innerHTML;
				_method.newDays();
				this.style.display='none';
			}
			$(nowPre).οnclick=function(){
				if(YM=='month'){
					if(parseFloat($(nows).innerHTML)==1){
						$(nows).innerHTML=13;
						$(_method._year).innerHTML=parseFloat($(_method._year).innerHTML)-1;
					}
				}
				$(nows).innerHTML=_method.formatNum(parseFloat($(nows).innerHTML)-1);
				_method.newDays();
				this.blur();
			}
			$(nowNex).οnclick=function(){
				if(YM=='month'){
					var month=parseFloat($(nows).innerHTML)+1;
					if(parseFloat($(nows).innerHTML)==12){
						$(nows).innerHTML=0;
						$(_method._year).innerHTML=parseFloat($(_method._year).innerHTML)+1;
					}
				}
				$(nows).innerHTML=_method.formatNum(parseFloat($(nows).innerHTML)+1);
				_method.newDays();
				this.blur();
			}
		},
		newDays:function(){
			this.date.setFullYear(parseFloat($(this._year).innerHTML));
			this.date.setMonth(parseFloat($(this._month).innerHTML)-1);
			$(this.id+'_newDays').innerHTML=this.createDays();
		},
		removeDate:function(){
			if($(this.id)) document.body.removeChild($(this.id));
		}
	}
	var onloads=function(){
		if($('dateTime_va')){
			if($('dateTime_ck')){
				$('dateTime_ck').οnclick=function(){dateTime($('dateTime_va'),this);};
			}else{
				$('dateTime_va').οnclick=function(){dateTime(this);};
			}
		}
	}
	if(document.addEventListener){
		window.addEventListener('load',onloads, false);
	}else{
		window.attachEvent('onload',onloads);
	}
	window.dateTime=function(obj,evs){
		new DateTime(obj,evs).init();
	}
})()

 

 

html测试：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>日历</title>
<script type="text/javascript" src="date.js"></script>
</head>

<body>
<input type="text" id="dateTime_va">
<!--<input type="button" id="dateTime_ck" value="times" />-->
<input type="button" value="times" οnclick="dateTime(document.getElementById('dateTime_va'),this)" />

</body>
</html>