#Typescript ihash code#

Since we are currently modifying this property in the component, the component code now generates an error: Property 'productUrl' is private and only accessible within class 'ProductService'. To use private accessibility, we add the private keyword in front of the variable name. The property or method is not available from any other component or service. It marks a class property or method so that it is only accessible from within the class. Private accessibility is a feature of TypeScript. To better protect our service properties from being modified outside of the service, we use private accessibility. TypeScript's Private Accessibility Feature Our component was able to change the URL defined in our service. If we run the application and open the developer tools, we first see the service log the URL, then we see the component's changed URL (Figure 1). For confirmation, we'll call the service method to log the URL.

And because by default any property or method of a class is public, we can change the URL that we defined in the service. And add inject to the import statement from we add a constructor. In this example, we use the new inject function for dependency injection instead of the constructor. In the Product component, we first inject the service. So we should be able to access our Product service properties from our component. Then we'll call that method in the Product service constructor: // Product Serviceīy default, variables we define in a class are public, meaning that any other code in our application can access them. To verify the value of the URL, let's create a method to log it: // Product Service And a products property to hold our retrieved array of products.

In the Product service, we create a property for the URL that we'll use to get our product data. For this example, we have a Product service and a Product component. Let's start by creating a property in a service and attempt to access it from our component.

Typescript ihash