js实现日历选择功能

2016-12-05 网页编程网 网页编程网

var DayNum=(IsLeapYear(year)&&month==2)?MonthDNum[month]+1:MonthDNum[month];
 var date2=new Date(year,month-1,1)
 var start=date2.getDay();
 var date2=null;
 var Trn=Math.ceil((DayNum+start)/7);
 var PrNum=1;
 content='<scr'+
 'ipt language="JavaScript">year='+year+',month='+month+',day='+day+',sy=year-3;ey=year+3;'+
 'sm=(month-3<1)?1:(+month-3>6)?6:month-3;'+
 'em=(month+3<7)?7:(month+3>12)?12:month+3;</scr'+
 'ipt><div style="border:1px solid #6A84C8;height:'+(64+21*Trn)+'px;"><ul><li style="background:#FFF;"></li>'+
 '<li style="width:144px;background:#FFF;padding-bottom:1px;" id="SelectArea"><div id="sYear">'+year+'年</div><div id="SArr" onclick="ShowSelect(\'SelectYear\',\'Y\');"><font face="Webdings">6</font></div>'+
 '<div id="sMonth">'+MonthText[month]+'</div><div id="SArr" onclick="ShowSelect(\'SelectMonth\',\'M\');"><font face="Webdings">6</font></div>';

content+='</li>'+
 '<li><a href="javascript:parent.Calendar_hide();">×</a></li></ul>'+
 '<div id="Tools"><ul>'+
 '<li><a href="javascript:parent.Calendar_Modif('+(year-1)+','+month+','+day+');">?</a></li>'+
 '<li><a href="javascript:parent.Calendar_Modif('+year+','+(month-1)+','+day+')";>?</a></li>';
 if(Calendar_obj2){content+='<li style="width:42px;"><a href="javascript:parent.Calendar_GetDate('+year+','+month+',0);">本月</a></li>'+
 '<li style="width:43px;"><a href="javascript:parent.Calendar_GetDate('+date.getFullYear()+','+(date.getMonth()+1)+','+date.getDate()+');">本日</a></li>';}
 else{content+='<li style="width:86px;"><a href="javascript:parent.Calendar_GetDate('+date.getFullYear()+','+(date.getMonth()+1)+','+date.getDate()+');">选择本日</a></li>';}
 content+='<li><a href="javascript:parent.Calendar_Modif('+year+','+(month+1)+','+day+');">?</a></li>'+
 '<li><a href="javascript:parent.Calendar_Modif('+(year+1)+','+month+','+day+');">?</a></li>'+
 '</ul></div>'+
 '<div id="Title"><ul><li style="color:#F00;">日</li><li>一</li><li>二</li><li>三</li><li>四</li><li>五</li><li style="color:#F00;">六</li></ul></div>'+
 '<ul onClick="javascript:Calendar_GetDate('+year+','+month+',-1);">';
 var date=null;
 if(start>0){content+='<li style="width:'+(start*29-1)+'px;"></li>';}
 for(i=1;i<=DayNum;i++){
  content+='<li><a href="#"'
  content+=(day==PrNum)?' class="CurrentDate"':'';
  content+=((i+start)%7<2)?' style="color:#F00;"':'';
  content+='>'+PrNum+'</a></li>';
  PrNum++;
 }
 content+='</ul></div>';
//层定位
 var Calendar=document.getElementById('divCalendar');

Calendar.style.height=66+21*Trn+'px';  //框架高度
 divCalendar.document.open()
 divCalendar.document.write(HeadMsg+content);
 divCalendar.document.close()
 var p=Calendar_obj;
 var eT=0,eL=0,eH=0,dH=0,sT=0,eP=p
 while(p&&p.tagName!="BODY"){
 eT+=p.offsetTop;  //距窗口顶部距离
 eL+=p.offsetLeft;  //距窗口左边距离
 p=p.offsetParent;}
 var eH=eP.offsetHeight;    //输入框高度
 var eW=eP.offsetWidth;    //输入框宽度
 var dH=Calendar.style.pixelHeight; //框架高度
 Calendar.style.top=(eT+dH>document.body.scrollHeight&&eT-dH>=0)?eT-dH+'px':eT+eH+'px';
 Calendar.style.left=(eL+206>document.body.scrollWidth&&eL-206+eW>=0)?eL-206+eW+'px':eL+'px';
 setTimeout("document.getElementById('divCalendar').style.display=''",1);
}
/*是否润年*/
function IsLeapYear(y){
if(0==y%4&&((y%100!=0)||(y%400==0))){return true;}
else{return false;}
}
function Calendar_Modif(y,m,d){
 if(m<1){m=12;y=y-1;}
 if(m>12){m=1;y=y+1;}
 var num=(IsLeapYear(y)&&m==2)?MonthDNum[m]+1:MonthDNum[m];
 if(d>num){d=num;}
 Calendar_Show(y,m,d)
}
function Calendar(obj,obj2){
 var p=Calendar_obj=document.getElementById(obj);
 Calendar_obj2=document.getElementById(obj2);
 var re=/\d{4}-\d{1,2}-\d{1,2}/;
 var arr,Sdate;
 arr=re.exec(Calendar_obj.value);
 if(arr!=null){Sdate=Calendar_obj.value;}
 else{var mydate=new Date();
 Sdate=mydate.getFullYear()+'-'+(mydate.getMonth()+1)+'-'+mydate.getDate();}
 Sdate=Sdate.split("-");
 Calendar_Show(parseInt(Sdate[0]),parseInt(Sdate[1]),parseInt(Sdate[2]));
}
function Calendar_GetDate(y,m,d){
if(!Calendar_obj2||d!=0){
 if(d>0){Calendar_obj.value=y+'-'+m+'-'+d;}
 else{
  var objEvent=divCalendar.event||arguments.callee.caller.arguments[0];
  var srcElement=objEvent.srcElement;
  if(!srcElement){srcElement=objEvent.target;}
  Calendar_obj.value=y+'-'+m+'-'+srcElement.innerHTML;
 }
}
else{
 if(IsLeapYear(y)&&m==2){num=MonthDNum[m]+1;}
 else{num=MonthDNum[m];}
 Calendar_obj.value=y+'-'+m+'-1';
 Calendar_obj2.value=y+'-'+m+'-'+num;
}
Calendar_hide();}
function Calendar_hide(){document.getElementById("divCalendar").style.display="none";}
document.onclick=Calendar_hide;
</script>
时间:<input type="text" name="sDate1" id="sDate1" value="" size="10" onClick="return Calendar('sDate1','sDate2');" />至<input type="text" name="sDate2" id="sDate2" value="" size="10" onClick="return Calendar('sDate2');" />
<br /><select>
<option>可挡住Select</option>
</select>

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