Initial

web/js/demo-js-interop.js

@@ -0,0 +1,16 @@
+(function(){
+    "use strict";
+
+    window._stateSet = function () {
+        window._stateSet = function() {
+            console.log("Call _stateSet only once");
+        };
+        let appState = window._appState;
+
+        let btn = document.getElementById('token');
+        btn.addEventListener('click', function() {
+            appState.onTokenReceived('token123');
+        })
+        
+    }
+}());