现在我的方法准备好了..在stackoverflow的帮助下:
function validatedate(inputText)
{
var thsid=$(inputText).attr('id');
var classname=$(inputText).attr('class');
var classstr=classname.split(" ");
var ret=true;
var dateformat = /^(0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])[\/\-]\d{4}$/;
// Match the date format through regular expression
if(inputText.value.trim()!="")
{
if( inputText.value.trim().match(dateformat))
{
// document.form1.text1.focus();
//Test which seperator is used '/' or '-'
var opera1 = inputText.value.split('/');
var opera2 = inputText.value.split('-');
lopera1 = opera1.length;
lopera2 = opera2.length;
// Extract the string into month, date and year
if (lopera1>1)
{
var pdate = inputText.value.split('/');
}
else if (lopera2>1)
{
var pdate = inputText.value.split('-');
}
var mm = parseInt(pdate[0]);
var dd = parseInt(pdate[1]);
var yy = parseInt(pdate[2]);
// Create list of days of a month [assume there is no leap year by default]
var ListofDays = [31,28,31,30,31,30,31,31,30,31,30,31];
if (mm==1 || mm>2)
{
if (dd>ListofDays[mm-1])
{
alert('Invalid date format!');
$(inputText).focus();
inputText.value="";
ret=false;
return false;
}
}
if (mm==2)
{
var lyear = false;
if ( (!(yy % 4) && yy % 100) || !(yy % 400))
{
lyear = true;
}
if ((lyear==false) && (dd>=29))
{
alert('Invalid date format!');
$('#'+thsid).focus();
inputText.value="";
ret=false;
return false;
}
if ((lyear==true) && (dd>29))
{
alert('Invalid date format!');
$('#'+thsid).focus();
inputText.value="";
ret=false;
return false;
}
}
}
else
{
alert("Invalid date format!");
$('#'+thsid).focus();
inputText.value="";
ret=false;
return false;
}
}