jQuery validate credit card exp date as future date

I can't seem to get this right, I can get it to catch a past date, but not return true on future date.I just need to validate 开发者_JS百科my form's Credit Card Expiration Date as being in the future, this isn't working, any ideas? the date has to be in the format MM/YYYY with a "/" in between them.

$.validator.addMethod(
"FutureDate",
function(value, element) {
    var startdatevalue = (.getMonth/.getYear);
    return Date.parse(startdatevalue) < Date.parse($("#ExpirationDate").val());
}, 
    "End Date should be greater than Start Date."
);

You're not actually getting it to catch a past date. If you're passing a date like this "11/2010" to your Date.parse(), it is returning NaN (or Not a Number) which is the logical equivalent to returning false.

Try doing this to see what I mean:

alert( Date.parse('11/2010') );

If you add a day number, it should work. Something like:

var startdatevalue = '11/1/2010';

Of course, this example uses a hard coded date. If the values are stored as 11/2010, you could try something like this:

    // Get the index of the "/"
var separatorIndex = value.indexOf('/');

    // Add "/1" before the separatorIndex so we end up with MM/1/YYYY
var startDate = value.substr( 0, separatorIndex ) + '/1' + value.substr( separatorIndex );

    // Do the same with the expiration date
var expDate = $("#ExpirationDate").val();
separatorIndex = expDate.indexOf('/');
expDate = expDate.substr( 0, separatorIndex ) + '/1' + expDate.substr( separatorIndex );

    // Return the comparison
return Date.parse(startDate) < Date.parse(expDate);