Previous

Next

Exercise - Apply access modifiers to a class

Completed

In this exercise, you'll apply access modifiers to properties and methods of the Car class.

1. Continue defining the Car class in the Playground.

2. Test the access of the class members by typing myCar1. and notice that all the members appear in the list, including the properties, the constructor parameters, the methods, and the worker function.

   

3. Set the access modifier of the _color, _doors, and _make properties and the worker function to private.

   // Properties
   private _make: string;
   private _color: string;
   private _doors: number;
   // ...
   private worker(): string {
       return this._make;
   }
   

4. Test the access of the class members again by typing myCar1. and notice that the properties and the worker function are now unavailable. Any attempt to use these class members will raise an error at compile time.

   

Continue