ECMAScript Cookbook

How to do it...

1. Open your command-line application and navigate to your workspace.
2. Create a new folder named 11-07-set-and-delete-from-weakmap.
3. Create a main.js file that defines a new class named Rocket that takes a constructor argument name and assigns it to an instance property:

// main.js 
class Rocket { 
  constructor(name) { 
    this.name = name; 
  } 
   } 

4. Create an enum of various launch sites:

// main.js 
const LaunchSite = { 
  KENNEDY_SPACE_CENTER: Symbol('Kennedy Space Center'), 
  JUIQUAN: Symbol('Jiuquan Satellite Launch Center'), 
  WHITE_SANDS: Symbol('Jiuquan Satellite Launch Center'), 
  BAIKONUR: Symbol('Baikonur Cosmodrome') 
} 

5. Create a main function. In that function, use the set and delete methods to manipulate entries of launch site to rocket. ...