fix: example

Author: mehin-hamzaoglu-cko

examples/card-form/index.html

@@ -53,6 +53,7 @@
             },
           },
           function (form) {
+            let preferredCardType = null;
             form.getNumberField().on("input", function (e) {
               if (e.card_number_length == 6) {
                 client.getCardInformation(
@@ -83,13 +84,13 @@ <h4 style="margin: 0 0 10px 0; color: #333;">Select Card Type:</h4>
                       const radioButtons = radioGroup.querySelectorAll('input[name="cardType"]')
                       radioButtons.forEach(radio => {
                         radio.addEventListener('change', function() {
-                          window.preferred_card_type = this.value
-                          console.log("User selected card type:", window.preferred_card_type)
+                          preferredCardType = this.value
+                          console.log("User selected card type:", preferredCardType)
                         })
                       })
 
                       // Set initial value
-                      window.preferred_card_type = null
+                      preferredCardType = null
                     }
                   },
                   function(err) {
@@ -121,7 +122,7 @@ <h4 style="margin: 0 0 10px 0; color: #333;">Select Card Type:</h4>
                 {
                   name: document.getElementById("card-form-name").value,
                   zip: "10018",
-                  preferred_card_type: window.preferred_card_type
+                  preferred_card_type: preferredCardType
                 },
                 function (token) {
                   console.log("Tokenization Success", token)