ECMAScript Cookbook

How to do it...

1. Open your command-line application and navigate to your workspace.
2. Create a new folder named 07-07-static-methods-on-all-instances.
3. Copy or create an index.html that loads and runs a main function from main.js.

4. Create a main.js file with an empty object rocketMap and a class Rocket:

//main.jslet rocketMap = {};  
 
class Rocket {} 

5. Create a static method named find that looks up rockets by string on the Rocket class:

class Rocket { 
  // ... 
  static find (name) {    return rocketMap[name];  } 
} 

6. Add a construction that assigns a name property, and assigns the instance to the rocketMap:

class Rocket { 
  // ... 
  constructor(name) {    this.name = name;    rocketMap[name] = this;  } 
} 

7. Create a main function that compares created instances ...