gistfile1.js

$("#date").blur(function() {
  var value= $(this).val();
  

  var userDate = new Date(value);
  
  var dateString = Date();

  var currDate = new Date(dateString);
  var minDate = new Date(dateString);
  var maxDate = new Date(dateString);
 
  //var minDate = currDate;
  minDate.setFullYear(currDate.getFullYear() - 5);
  
//  var maxDate = currDate;
  maxDate.setFullYear(currDate.getFullYear() - 100);
  
  if(userDate > minDate || userDate < maxDate) {
    alert(currDate.getFullYear() + " bad date is max: " + maxDate.getFullYear() + " or the min" + minDate.getFullYear());
  } else {
     alert("its ok");
  }
});
​