jQuery function to compare date with current date

Question

i am entering date of birth in form by entering date in separate text box ,selecting year from drop down and entering year in text box. Now i want to check that entered date

Answer 1

  function compareDate() {
var dateEntered = document.getElementById("txtDateEntered").value; 
var date = dateEntered.substring(0, 2);
var month = dateEntered.substring(3, 5);
var year = dateEntered.substring(6, 10);

var dateToCompare = new Date(year, month - 1, date);
var currentDate = new Date();

if (dateToCompare > currentDate) {
    alert("Date Entered is greater than Current Date ");
}
else {
    alert("Date Entered is lesser than Current Date");
}
}