Allow other modules to act on the created card element

js/stripe.js

@@ -59,6 +59,9 @@
             // Create an instance of the card Element
             var card = elements.create('card', options);
 
+            // Allow other modules to act on the created card element
+            $(element).trigger('drupalStripe.elementCreated', ['card', card, elements]);
+
             // Add an instance of the card Element into the `card-element` <div>
             card.mount('#' + element.id + '-card-element');
 

modules/stripe_examples/js/stripe_examples.js

+/**
+ * @file
+ * Provides stripe attachment logic.
+ */
+
+(function ($, window, Drupal, drupalSettings, Stripe) {
+
+  'use strict';
+
+  /**
+   * Attaches the stripe behavior
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   */
+  Drupal.behaviors.stripeExamples = {
+    attach: function (context, settings) {
+
+      $('.form-item-stripe').on('drupalStripe.elementCreate', function(event, type, options) {
+        console.log('Stripe ' + type + ' create options:', options);
+      });
+
+      $('.form-item-stripe').on('drupalStripe.elementCreated', function(event, type, element, elements) {
+        // Do something on card.
+        console.log('Stripe elements instance: ', elements);
+        console.log('Stripe ' + type + ' element intance:', element);
+        element.on('ready', function(e) {
+          // Add an event handler
+        });
+      });
+    }
+  };
+
+})(jQuery, window, Drupal, drupalSettings, Stripe);

modules/stripe_examples/stripe_examples.libraries.yml

 stripe_examples:
+  js:
+    js/stripe_examples.js: {}
+
   css:
     theme:
       css/stripe_examples.css: {}

[Chris Matthews]

@hanoii Would it be possible to push this commit which allows other modules to act on the created card element to a 8.x-1.0-beta3 release? Thanks for considering!