stripe_token.js

$(function() {
  var expMonthAndYear = $('input[name=expiry]').val().split(" / ");
  Stripe.card.createToken({
              number: $('input[name=number]').val(),
              cvc: $('input[name=cvv]').val(),
              exp_month: expMonthAndYear[0],
              exp_year: expMonthAndYear[1]
            }, stripeResponseHandler);
});

var stripeResponseHandler = function(status, response) {
  if (response.error) { 
    // Show appropriate error to user
  } else {
    // Get the token ID:
    var token = response.id;
    // Save token mapping it to customer for all future payment activities
  }
}