Chrome 上 Javascript 中的日期验证

Question

I have coded an HTML form which is linked to JavaScript to check whether the entered date in after the current date. The program works properly on Microsoft Edge and Edge Insider but isn't returning any value in Google Chrome

function validation()
{
  var cnt=0;
  var datecnt=0;

  //Name Validation
  var n = document.forms["reservationForm"]["name"].value;
  if (n !="")
  {cnt++;}

//Mobile Number Validation
var m = document.forms["reservationForm"]["tel"].value;
var IndNum = /^[0]?[789]\d{9}$/;
if(IndNum.test(m))
{
   cnt++;
}
//Email Address Validation
if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(reservationForm.email.value))
  {cnt++;}

//Number of Guests Validation
var g = document.forms["reservationForm"]["number"].value;
if(g>0 && g<=15)
  {cnt++;}

// Date Validation
var GivenDate = document.forms["reservationForm"]["Date"].value;
var CurrentDate = new Date();
GivenDate = new Date(GivenDate);

if(GivenDate > CurrentDate)
{cnt++;datecnt++}

  //Final Dialog Box Check
  if(cnt==5)
  {alert("Reservation Confirmed");}

  if(datecnt==0)
  {alert("Please enter a date before the current date.");
    return (false);
  }
}

Answer 1

You actually have multiple things that are not quite correct...

The first one and probably most important is the keyword return in JavaScript, which is not permitted outside a function.

The second one: you have too many parenthesis. The last } is not necessary.

The third one: If you want the givenDate to be AFTER the current date, you have to modify your alert as it says the contrary. If you want the givenDate to be BEFORE the current date, you should check as follows: if (GivenDate < CurrentDate){ ...

Hope this helps

[EDIT] Ok I didn't see, that some of my points were pointed out in the comments ;)