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Xiang

Validate Past And Future Dates

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Hi everyone,

 

I'd like to share this code, that validates if the entered date is correct.

Enter the name of your field instead of "myDate", enter the correct numbers for allowedDaysInPast  and allowedDaysInFuture variables, enter texts of your messages.

If you don't want to validate in past or in future you can delete the correspond block.

Then add a Header@Footer element, select the Footer element, click the Source button and enter the code.

<SCRIPT LANGUAGE="JavaScript">
function validate_dates()
{
var dateFieldName = "myDate";
var allowedDaysInPast = 1;
var deniedMessagePast = "The entered date cannot be earlier than yesterday";
var allowedDaysInFuture = 1;
var deniedMessageFuture = "The entered date cannot be later than tomorrow";

dateFieldName = "InsertRecord" + dateFieldName;

var entered_value = document.getElementById(dateFieldName).value;
var entered_date = new Date(entered_value);

//Start of Validating in past
var todayP = new Date();
var allowedDatePast = new Date(todayP.setDate(todayP.getDate() - allowedDaysInPast));
allowedDatePast = allowedDatePast.setHours(0,0,0,0);
if(entered_date < allowedDatePast)
   {
      alert(deniedMessagePast);
      return false;
   }
//Finish of validating in past

//Start of Validating in future
var todayF = new Date();
var allowedDateFuture = new Date(todayF.setDate(todayF.getDate() + allowedDaysInFuture));
allowedDateFuture = allowedDateFuture.setHours(23,59,59);
if(entered_date > allowedDateFuture)
   {
      alert(deniedMessageFuture);
      return false;
   }
//Finish of validating in future
}

document.getElementById("caspioform").onsubmit=validate_dates;
</SCRIPT>

I'll be grateful, if you tell me if the code works or if any errors occur.

Have a nice day!

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