Question

Simple function Date.parse() not working well in Internet Explorer 8.
I am using Date.parse() to validate date in format "MM/DD/YYYY".

• _.isNaN(Date.parse("99/99/9999")) return true – date is invalid
• _.isNaN(Date.parse("01/01/1990")) return false – date is valid

But now I tried my JavaScript in IE 8 and I’m confused.

• "88/88/8888" – for this date all working well – date is invalid.
• "13/35/2012" – invalid date
  but Date.parse("13/35/2012") parse this date in IE only and don’t return NaN.

jsFiddle Demo

Any ideas?

Answer 1

I used my method for date validation

   var isValidDate = function(dateAsString)
   {
      var parsedDate = Date.parse(dateAsString);
      if (_.isNaN(parsedDate) || !_.isEqual(new Date(parsedDate).format("mm/dd/yyyy"), dateAsString))
      {
         return false
      }

      return true
   }