问一个javascript客户端验证的问题

[PatrickCao]

想知道怎样判断一个字符串是否为日期型数据.

[shenwenyang]

function CheckDateTime()
{
var nowDateTime=new Date();
var VDateTime= ; //要检查的时间
var begarray=VDateTime.split('-');
var tt=begarray[2].split(' ')[1].split(':');
var ValTime=new Date(begarray[0],begarray[1]-1,begarray[2].split(' ')[0],tt[0],tt[1]);
var NowTime=new Date(nowDateTime.getYear(),nowDateTime.getMonth(),nowDateTime.getDate(),nowDateTime.getHours(),nowDateTime.getMinutes());
if(ValTime<=NowTime) {
return ;
}
}

[jinglelin]

if (dataType == "Date") {
var yearFirstExp = new RegExp("^\\s*((\\d{4})|(\\d{2}))([-./])(\\d{1,2})\\4(\\d{1,2})\\s*$");
m = op.match(yearFirstExp);
var day, month, year;
if (m != null && (m[2].length == 4 || val.dateorder == "ymd")) {
day = m[6];
month = m[5];
year = (m[2].length == 4) ? m[2] : GetFullYear(parseInt(m[3], 10))
}
else {
if (val.dateorder == "ymd"){
return null;
}
var yearLastExp = new RegExp("^\\s*(\\d{1,2})([-./])(\\d{1,2})\\2((\\d{4})|(\\d{2}))\\s*$");
m = op.match(yearLastExp);
if (m == null) {
return null;
}
if (val.dateorder == "mdy") {
day = m[3];
month = m[1];
}
else {
day = m[1];
month = m[3];
}
year = (m[5].length == 4) ? m[5] : GetFullYear(parseInt(m[6], 10))
}
month -= 1;
var date = new Date(year, month, day);
return (typeof(date) == "object" && year == date.getFullYear() && month == date.getMonth() && day == date.getDate()) ? date.valueOf() : null;
}

[meter1999]

我想用comparevalidator控件的去判断date更好
<asp:comparevalidator id="testdate" runat="server" Display="None" ControlToValidate="你的验证控件" ErrorMessage="请输入有效的日期;" Type="Date" Operator="DataTypeCheck"></asp:comparevalidator

[athossmth]

meter说的对。jinglelin(碧海蓝天)，哈哈，贴的就是微软提供的验证控件JS脚本（http://localhost/aspnet_client/system_web/1_1_4322/WebUIValidation.js）中日期转换的代码。

[rickjelly2004]

isdate("888")
kan kan xing bu??