<script src="https://www.paypal.com/sdk/js?client-id=AbZ1Z3Np-AddJ9GjHYNhTu-2MJLL8lRq_4SwKek07u1m5vbq-lLo8AWaKKM-vQk6C6Pp5nL-MZBl0BXD&vault=true&intent=subscription" data-sdk-integration-source="button-factory"></script>

<script>

  paypal.Buttons({

      style: {

          shape: 'rect',

          color: 'gold',

          layout: 'vertical',

          label: 'subscribe'

      },

      createSubscription: function(data, actions) {

        return actions.subscription.create({

          /* Creates the subscription */

          plan_id: 'P-3GH32207T1038960GMPN7BEI'

        });

      },

      onApprove: function(data, actions) {

        alert(data.subscriptionID); // You can add optional success message for the subscriber here

      }

  }).render('#paypal-button-container-P-3GH32207T1038960GMPN7BEI'); // Renders the PayPal button

</script>