tmpString=<script language="javascript">
function YearID_TC(obj)
{
//取出下拉框的值
var vYear=obj.value-10;
//清除下拉框
obj.length=0;
for(i=0;i<21;i)
{
var opt=document.createElement("OPTION");
obj.add(opt);
opt.value=vYear+i;
opt.text=vYear+i+"年";
}
obj.value=vYear+10;
}
function ctlID_SetValue(obj1,obj2)
{
document.all("ctlID").value=obj1.value+"-"+obj2.value;
}
</script>;
function YearID_TC(obj)
{
//取出下拉框的值
var vYear=obj.value-10;
//清除下拉框
obj.length=0;
for(i=0;i<21;i)
{
var opt=document.createElement("OPTION");
obj.add(opt);
opt.value=vYear+i;
opt.text=vYear+i+"年";
}
obj.value=vYear+10;
}
function ctlID_SetValue(obj1,obj2)
{
document.all("ctlID").value=obj1.value+"-"+obj2.value;
}
</script>;
http://jkisjk.vip.sina.com/html/YearMonthDaySelect.htm
function RepeatYear(DateYear)
{
var strReYear ;
var blnYearFlag = false;
switch (DateYear.length)
{
case 0 :
blnYearFlag = true;
break;
case 1 :
DateYear = "200" + DateYear;
break;
case 2 :
DateYear = "20" + DateYear;
break;
case 3 :
DateYear = "2" + DateYear;
break;
}
if(blnYearFlag)
{
strReYear = "";
}
else
{
strReYear = DateYear;
}
return strReYear;
}function RepeatYearMonthDay(strYear,strMonth,strDay,intFromOrTo)
{
var strYearMonthDay = new Array(3);
if(intFromOrTo == 1)
{
if(strMonth == "")
{
strMonth = "01";
}
if(strDay == "")
{
strDay = "01";
}
}
else
{
if(strMonth == "")
{
strMonth = "12";
if(strDay == "")
{
strDay = "31";
}
}
else
{
if(strDay == "")
{
strDay = "31";
}
}
}
strYearMonthDay[0] = strYear;
strYearMonthDay[1] = strMonth;
strYearMonthDay[2] = strDay;
return strYearMonthDay;
}
function CreateDayCombox(strYearName,strMonthName,strComboxDayName)
{
var txtBoxYear;
var txtBoxMonth;
var txtBoxday;
var strNumber="1234567890";
var strPartYear;
var intIndex;
var strMonth;
var strYear;
var strDay;
var strval;
var i;
txtBoxYear = document.getElementsByName(strYearName);
txtBoxMonth = document.getElementsByName(strMonthName);
txtBoxDay = document.getElementsByName(strComboxDayName);
strYear = RepeatYear(txtBoxYear[0].value)
strMonth = txtBoxMonth[0].value;
txtBoxDay[0].length = 1;
txtBoxDay[0].options[0].value = "";
txtBoxDay[0].options[0].text = "";
if(strYear !="" && strMonth!="")
{
for(i=0;i<strYear.length;i++)
{
strPartYear=strYear.substring(i,i+1);
if(strNumber.indexOf(strPartYear,0)==-1)
{
return false;
}
}
if((parseInt(strYear)%4==0&&parseInt(strYear)%100!=0)||(parseInt(strYear)%400==0))
{
strYear = true;
}
else
{
strYear = false;
}
switch(strMonth)
{
case "02":
strDay = 28;
if(strYear == true)
{
strDay = 29;
}
break;
case "04":
case "06":
case "09":
case "11":
strDay = 30;
break;
default:
strDay = 31;
break;
}
if(strDay!="")
{
txtBoxDay[0].length = strDay+1;
txtBoxDay[0].options[0].value = "";
txtBoxDay[0].options[0].text = "";
for(i = 1;i < strDay+1;i++)
{
if(i<10)
{
strval = "0"+i;
}
else
{
strval = i;
}
txtBoxDay[0].options[i].value = strval;
txtBoxDay[0].options[i].text = strval;
}
}
}
}
</script>
<html>
<head>
</head>
<body>
<%Call ComboxCreateTime("comboxFromYear","comboxFromMonth","comboxFromDay")%>
</body>
</html>
<%
Sub ComboxCreateTime(comboxYearName,comboxMonthName,comboxDayName)
response.Write("<input name="&comboxYearName&" type=text size=4 maxlength='4' onChange='CreateDayCombox("&""""&comboxYearName&""""&","&""""&comboxMonthName&""""&","&""""&comboxDayName&""""&")'> 年 ")
response.Write("<select name="&comboxMonthName&" onChange='CreateDayCombox("&""""&comboxYearName&""""&","&""""&comboxMonthName&""""&","&""""&comboxDayName&""""&")'>")
response.Write("<option selected value='' ></option>")
For i = 1 To 12
If len(i) = 1 Then
i = "0" & i
End If
response.Write("<option value="&i&">"&i&"</option>")
Next
response.Write("</select> 月 ")
response.Write("<select name="&comboxDayName&" style='width:1cm'>")
response.Write("<option selected></option>")
response.Write("</select> 日")
End Sub
%>
<head>
<title>年月日三下拉框联动</title>
<meta http-equiv='Content-Type' content='text/html; charset=gb2312'>
<meta name='author' content='F.R.Huang(meizz梅花雪)//www.meizz.com'>
</head><body>
<form name=form1>
<select name=YYYY onchange="YYYYDD(this.value)">
<option value="">请选择 年</option>
</select>
<select name=MM onchange="MMDD(this.value)">
<option value="">选择 月</option>
</select>
<select name=DD>
<option value="">选择 日</option>
</select>
</form><script language="JavaScript"><!--
function YYYYMMDDstart()
{
MonHead = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]; //先给年下拉框赋内容
var y = new Date().getFullYear();
for (var i = (y-30); i < (y+30); i++) //以今年为准，前30年，后30年
document.form1.YYYY.options.add(new Option(" "+ i +" 年", i)); //赋月份的下拉框
for (var i = 1; i < 13; i++)
document.form1.MM.options.add(new Option(" " + i + " 月", i)); document.form1.YYYY.value = y;
document.form1.MM.value = new Date().getMonth() + 1;
var n = MonHead[new Date().getMonth()];
if (new Date().getMonth() ==1 && IsPinYear(YYYYvalue)) n++;
writeDay(n); //赋日期下拉框Author:meizz
document.form1.DD.value = new Date().getDate();
}
if(document.attachEvent)
window.attachEvent("onload", YYYYMMDDstart);
else
window.addEventListener('load', YYYYMMDDstart, false);
function YYYYDD(str) //年发生变化时日期发生变化(主要是判断闰平年)
{
var MMvalue = document.form1.MM.options[document.form1.MM.selectedIndex].value;
if (MMvalue == ""){ var e = document.form1.DD; optionsClear(e); return;}
var n = MonHead[MMvalue - 1];
if (MMvalue ==2 && IsPinYear(str)) n++;
writeDay(n)
}
function MMDD(str) //月发生变化时日期联动
{
var YYYYvalue = document.form1.YYYY.options[document.form1.YYYY.selectedIndex].value;
if (YYYYvalue == ""){ var e = document.form1.DD; optionsClear(e); return;}
var n = MonHead[str - 1];
if (str ==2 && IsPinYear(YYYYvalue)) n++;
writeDay(n)
}
function writeDay(n) //据条件写日期的下拉框
{
var e = document.form1.DD; optionsClear(e);
for (var i=1; i<(n+1); i++)
e.options.add(new Option(" "+ i + " 日", i));
}
function IsPinYear(year)//判断是否闰平年
{ return(0 == year%4 && (year%100 !=0 || year%400 == 0));}
function optionsClear(e)
{
e.options.length = 1;
}
//--></script>
</body>
</html>
1.选了2003-02-05后，将年份改一下，就又要重选日期了
2.得到某月天数的代码，可以用“new Date(2001,2,0).getDate()”来得到，不必用“月份的天数数组＋平闰年判断”