Validate two dates of this “dd-MMM-yyyy” format in javascript

Question

I have two dates 18-Aug-2010 and 19-Aug-2010 of this format. How to find whether which date is greater?

Answer 1

The native Date can parse "MMM+ dd yyyy", which gives:

function parseDMY(s){
  return new Date(s.replace(/^(\d+)\W+(\w+)\W+/, '$2 $1 '));
}
+parseDMY('19-August-2010') == +new Date(2010, 7, 19) // true
parseDMY('18-Aug-2010') < parseDMY('19-Aug-2010')     // true