ECMAScript Cookbook

How to do it...

1. Open your command-line application, and navigate to your workspace.
2. Create a new folder named 12-05-set-union.
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 a function called union that takes two set arguments:

// main.js 
function union (set1, set2) {}  

5. Create a result set. Loop through both set instances, and add each entry to the resultant set:

// main.js 
function union (set1, set2) { 
  const result = new Set(); 
 
  set1.forEach((entry) => result.add(entry)); 
  set2.forEach((entry) => result.add(entry)); 
 
  return result; 
} 

6. Create a main function. Create a couple ...