Compare Dates

You can use this example for date validation in the page handler code

    //----------- DATE VALIDATION --------//

        request: "crt.HandleViewModelAttributeChangeRequest",

        handler: async (request, next) => {

        // ------------Get the selected date values--------//

        var dateFrom = await request.$context.DateTimeAttribute_6jtq65k;

        var dateTo = await request.$context.DateTimeAttribute_vg9eydm;

        // Check if dateFrom and dateTo values are valid

        if (!dateFrom || !dateTo) {

            return;

        }

        //------Convert the date values to JavaScript Date objects---------//

        var jsDateFrom = new Date(dateFrom);

        var jsDateTo = new Date(dateTo);

        //---------Check the date values and display an error message-----------//

        if (jsDateTo < jsDateFrom) {

            var errorMessage = "Please choose a different 'dateTo' value. It should be greater than 'dateFrom'.";

            Terrasoft.utils.showMessage({

                caption: errorMessage,

                message: errorMessage,

                buttons: ["ok"],

                defaultButton: 0,

                style: Terrasoft.MessageBoxStyles.RED

            });

            request.$context.DateTimeAttribute_vg9eydm = null;

            return;

        }

Abhishek,

Thanks Abhishek, Instead of "handler" is there any way  to use "validators"?