Validate date for anyone over 18 with jQuery

Question

I have a form on my site that should validate for anyone who is over 18.

var day = $("#dobDay").val();
var month = $("#dobMonth").val();
var year = $("#dobYear").val();
var age = 18;
var mydate = new Date();
mydate.setFullYear(year, month-1, day);

var currdate = new Date();
currdate.setFullYear(currdate.getFullYear() - age);
var output = currdate - mydate
if ((currdate - mydate) > 0){
    // you are not 18
}

But it working totally opposite way. I would like the if statement to take action when user is over under 18 years old.

Thank you for your help in advance

Answer 1

check this DEMO

var day = 12;
var month = 12;
var year = 2006;
var age = 18;
var setDate = new Date(year + age, month - 1, day);
var currdate = new Date();

if (currdate >= setDate) {
  // you are above 18
  alert("above 18");
} else {
  alert("below 18");
}