Calling super methods

Overriding methods is awesome for extending behavior. However, we sometimes want to continue to use behavior from a parent class. This is possible by using the super keyboard to access parent class methods.

In this recipe, we'll see how to use this keyword to access those methods.

Getting ready

This recipe assumes you already have a workspace that allows you to create and run ES modules in your browser. If you don't, please see the first two chapters.

How to do it...

1. Open your command line application and navigate to your workspace.
2. Create a new folder named 08-05-getters-read-only.
3. Copy or create an index.html that loads and runs a main function from main.js.

4. Create a main.js file that defines a new class named Rocket. Add a constructor that takes a constructor argument name and assigns it to an instance property. Then, define a simple print method:

// main.js 
class Rocket { 
  constructor(name) { 
    this.name = name; 
  } 
 
  print() { 
    console.log(this.name + ' is...