Return value based on date

Hello. Is it possible to return a yes / no value when a selected date is before or after a set date. Something like,

(function(){

var purchaseDate = fieldname6;

var fromDate = 11/30/2024;

if (purchaseDate < fromDate) {

  alert(“Current date is before November 30th.”);

} else {

  alert(“Current date is after or equal to November 30th.”);

})();

Thank you.