Node.js, MongoDB, and AngularJS Web Development

Implementing Helper Functions

Next, you add the helper functions, shown in Listing 28.22, to provide functionality for the AngularJS templates. The setContent() function sets the $scope.content value, effectively changing the view. The setProduct() function is called when a user clicks a print image and sets the $scope.product used in the product view. The cartTotal() function iterates through the products in the user’s cart, updates $scope.shipping, and returns a total that is then used in the cart and review views.

Listing 28.22 cart_app.js-helpers: Adding helper functions to set the content, total, and shipping values

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029     $scope.setContent = function(filename){030       $scope.content = '/static/'+ filename; ...