Java Script Code to compare two Date values in String

  function ValidateDate()
  {
 var fd=document.getElementById ('FromDate_txtDate');
 var td=document.getElementById ('ToDate_txtDate');

 if (Date.parse(fd.value) > Date.parse(td.value)) {

     alert("Invalid Date Range!\nFrom Date cannot be after To Date!")
    return false;
   }
  
}