angular in-app purchase example

demo-code.js

        function sync() {
          $scope.ready = store.ready();
          $scope.product = Object.assign({}, store.get("my_product_id"));
        }
        const dsync = window.debounce(sync, 50);

        $scope.$on("$ionicView.beforeEnter", function () {
          dsync();
          store.when("my_product_id").updated(dsync);
        });

        $scope.$on("$ionicView.beforeLeave", function () {
          store.off(dsync);
        });