Why are you guys doing so hard with hardcoding the post values ?
Code:
$('#registerForm').on("submit", function(event){
event.preventDefault();
$.ajax({
type: 'POST',
url: '/includes/register.php',
data: $("#registerForm").serialize()
}).done(function(response) {
$('#response').html(response);
});
});
using serialize() you can send the whole form.