Validations on list and library Date Time field

Hi Team,
I am using List and Library control with StartDate and Endate time columns. I need to validate Dates should be same. But validation not working here in the dialog box for this control.
Below is the code I am using.

function validation(){
name: 'End Date validation',
error: 'EndDate must be same as StartDate',
validate: function(value) {

                var date1 = fd.field('EndDate').value.toISOString().split('T')[0];
                var date2 = fd.field('StartDate').value.toISOString().split('T')[0];
                console.log('EndDate ' + date1);
                console.log('StartDate ' + date2);
        if (date2 >= date1 || date2 <= date1 ) {
            return false;
        return true;

// Calling function when the user changes the date
fd.field('StartDate').$on('change', validation);
fd.field('EndDate').$on('change', validation);
// Calling function on form loading



Thanks in advance.

Hello @navpreet.kaur,

What exactly doesn't work? From the screenshot I see that validation triggers for the EndDate field. If you want to trigger validation for the StartDate, you need to add custom valuation to it too.

@mnikitina , yes i need it only for End Date, but in the screenshot, dates are already same the validation does not work in the control dialog box.


If you want to compare the date part without the time, you need to use this code:

//clear the time
var date1 = fd.field('EndDate').value.setHours(0,0,0,0);
var date2 = fd.field('StartDate').value.setHours(0,0,0,0);
if (date2 == date1) {
   return true;
return false;

Thank you, it worked.

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