When comments are created at start of validation script, the cart is not visible

1. Log in to the demo instance.
2. Navigate to Service Catalog > Catalog Definition > Maintain Items.
3. Create a new catalog item.
4. Create a date/time variable.
5. Create a validation script for the Date/Time Type:
   
   /*
   //function validate(value) {
   //    if(!value){
   //    return true;
   //}
   //    return (getDateFromFormat(value,'yyyy-mm-dd hh:mm:ss')!=0);
   //}
   */
   function validate(value) {
   var format = g_user_date_time_format;
     if (!value) {
      return true;
     }
     return (getDateFromFormat(value,format) != 0);
    
   }
   
   
6. Try the new catalog item by entering a value for the date/time.
   There is no option to proceed to checkout. Note that the developer tools shows this error: 
   
   Uncaught ReferenceError: validate_glide_date_time is not defined

Move the comments below the end of the function. For example, the script above can be changed to:

function validate(value) {
    var format = g_user_date_time_format;
    if (!value) {
       return true;
    }
    return (getDateFromFormat(value,format) != 0);
}
/*
//    function validate(value) {
//       if(!value){
//          return true;
//       }
//       return (getDateFromFormat(value,'yyyy-mm-dd hh:mm:ss')!=0);
//    }
*/

Try the catalog item again. You should be able to proceed to checkout and the console should be clean.