Fix error when making a payment with a currency other than the default...

Fix error when making a payment with a currency other than the default currency. #230

js/civicrm_stripe.js

@@ -205,7 +205,7 @@
           $.post(url, {
             payment_method_id: result.paymentMethod.id,
             amount: CRM.payment.getTotalAmount().toFixed(2),
-            currency: CRM.vars.stripe.currency,
+            currency: getCurrency(),
             id: CRM.vars.stripe.id,
             description: document.title,
             csrfToken: CRM.vars.stripe.csrfToken
@@ -625,6 +625,19 @@
     return submit;
   }
 
+  /**
+   * Get currency on the form
+   * @returns {currency}
+   */
+  function getCurrency() {
+    if (document.getElementById('currency')) {
+      return document.getElementById("currency").value;
+    }
+    else {
+      return CRM.vars.stripe.currency;
+    }
+  }
+
   function cardElementChanged(event) {
     if (event.empty) {
       $('div#card-errors').hide();