KnockoutJS Essentials

The Services module

Services are also singletons, like resources, so follow the same steps as the resources module:

1. Open the services/ProductService.js file.
2. Create the top hierarchy module:

   var Shop;
   Shop = Shop || {};

3. Create the Resources namespace:

   Shop.Services = Shop.Services || {};

4. Define ProductService:

   Shop.Services.ProductService = (function(){
   })();

5. In this case the service has no dependencies.
6. Finally, set the following code in the services/ProductService.js file. Since in the application the resources are singleton, extend the resource with the methods used in the following code:

   var Shop; Shop = Shop || {}; Shop.Services = Shop.Services || {}; Shop.Services.ProductService = (function(Product) { var hasStock = function (product) { return product.stock() ...