function YYYYMMDDstart(form,year,month,day)
{
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-3); i < (y+5); i++) //以今年为准,前30年,后30年
year.options.add(new Option(i,i));
//赋月份的下拉框
for (var i = 1; i < 13; i++)
month.options.add(new Option(i,i));
year.value = y;
month.value = new Date().getMonth() + 1;
var n = MonHead[new Date().getMonth()];
if (new Date().getMonth() ==1 && IsPinYear(year.options[year.selectedIndex].value)) n++;
writeDay(n,day); //赋日期下拉框Author:meizz
day.value = new Date().getDate();
}
function YYYYDD(str,month,day) //年发生变化时日期发生变化(主要是判断闰平年)
{
var MMvalue = month.options[month.selectedIndex].value;
if (MMvalue == "" ){ var e = day; optionsClear(e); return;}
var n = MonHead[MMvalue - 1];
if (MMvalue ==2 && IsPinYear(str)) n++;
writeDay(n,day)
}
function MMDD(str,year,day) //月发生变化时日期联动
{
var YYYYvalue = year.options[year.selectedIndex].value;
if (YYYYvalue == "" ){ var e = day; optionsClear(e); return;}
var n = MonHead[str - 1];
if (str ==2 && IsPinYear(YYYYvalue)) n++;
writeDay(n,day)
}
function writeDay(n,day) //据条件写日期的下拉框
{
var e = day; optionsClear(e);
for (var i=1; i<(n+1); i++)
e.options.add(new Option(i,i));
}
function IsPinYear(year)//判断是否闰平年
{ return(0 == year%4 && (year%100 !=0 || year%400 == 0));}
function optionsClear(e)
{
for (var i=e.options.length; i>0; i--)
e.remove(i);
}
function compDate(SY,SM,SD,EY,EM,ED)
{
} 一下为页面代码<body onload="YYYYMMDDstart(document.form1,document.form1.SYear,document.form1.SMonth,document.form1.SDay);">
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="SYear" runat="server" name="SYear" onchange="YYYYDD(this.value,document.form1.SMonth,document.form1.SDay)" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SMonth" runat="server" name="SMonth" onchange="MMDD(this.value,document.form1.SYear,document.form1.SDay)" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SDay" runat="server" name="SDay" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SHour" runat="server" name="SHour" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SMinute" runat="server" name="SMinute" AutoPostBack="True">
</asp:DropDownList>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label></div>
</form>
</body>
{
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-3); i < (y+5); i++) //以今年为准,前30年,后30年
year.options.add(new Option(i,i));
//赋月份的下拉框
for (var i = 1; i < 13; i++)
month.options.add(new Option(i,i));
year.value = y;
month.value = new Date().getMonth() + 1;
var n = MonHead[new Date().getMonth()];
if (new Date().getMonth() ==1 && IsPinYear(year.options[year.selectedIndex].value)) n++;
writeDay(n,day); //赋日期下拉框Author:meizz
day.value = new Date().getDate();
}
function YYYYDD(str,month,day) //年发生变化时日期发生变化(主要是判断闰平年)
{
var MMvalue = month.options[month.selectedIndex].value;
if (MMvalue == "" ){ var e = day; optionsClear(e); return;}
var n = MonHead[MMvalue - 1];
if (MMvalue ==2 && IsPinYear(str)) n++;
writeDay(n,day)
}
function MMDD(str,year,day) //月发生变化时日期联动
{
var YYYYvalue = year.options[year.selectedIndex].value;
if (YYYYvalue == "" ){ var e = day; optionsClear(e); return;}
var n = MonHead[str - 1];
if (str ==2 && IsPinYear(YYYYvalue)) n++;
writeDay(n,day)
}
function writeDay(n,day) //据条件写日期的下拉框
{
var e = day; optionsClear(e);
for (var i=1; i<(n+1); i++)
e.options.add(new Option(i,i));
}
function IsPinYear(year)//判断是否闰平年
{ return(0 == year%4 && (year%100 !=0 || year%400 == 0));}
function optionsClear(e)
{
for (var i=e.options.length; i>0; i--)
e.remove(i);
}
function compDate(SY,SM,SD,EY,EM,ED)
{
} 一下为页面代码<body onload="YYYYMMDDstart(document.form1,document.form1.SYear,document.form1.SMonth,document.form1.SDay);">
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="SYear" runat="server" name="SYear" onchange="YYYYDD(this.value,document.form1.SMonth,document.form1.SDay)" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SMonth" runat="server" name="SMonth" onchange="MMDD(this.value,document.form1.SYear,document.form1.SDay)" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SDay" runat="server" name="SDay" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SHour" runat="server" name="SHour" AutoPostBack="True">
</asp:DropDownList>
<asp:DropDownList ID="SMinute" runat="server" name="SMinute" AutoPostBack="True">
</asp:DropDownList>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label></div>
</form>
</body>
你post就取不到的哦。
要换另一方式的。用一个hidden存起来。