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 = $(\"         


        

Answer 1

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);

if(currdate < mydate)
{
    alert('You must be at least 18 years of age.');
}