JavaScript/OOP-classical/Exercises

Topic: OOP - 1

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1. Create an object with (minimum) two different techniques. The object shall contain information about a person: first name, family name, hobbies, address, weight, ...

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"use strict";

// Example 1: literals
const john = {
  firstName: "John",
  familyName: "Ghandi",
  hobbies: ["Reading books", "Travel"],
  address: {
             city: "Dakkar",
             street: "Main Road 55"
            },
  weight: 62
};
console.log(john);

// Example 2: 'new' operator plus direct assignment of a property
const jim = new Object(
{
  firstName: "John",
  familyName: "Ghandi",
  hobbies: ["Reading books", "Travel"],
  weight: 62
});
jim.address = 
{
  city: "Dakkar",
  street: "Main Road 55"
};
console.log(jim);

// Example 3: 'Object.create' method
const linda = Object.create(
{
  firstName: "Linda",
  familyName: "Ghandi"
}); // ... and more properties
console.log(linda);

2. Create an object 'Car' in a way that you can create an instance with const myCar = new Car("Tesla", "Model S");

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"use strict";

function Car(brand, model) {
  this.brand = brand
  this.model = model;
  this.show = function () {return "My car is a " + this.brand + " " + this.model};
}
const myCar = new Car("Tesla", "Model S");
console.log(myCar.show());

3. Create an object 'myBike' and an object 'myEBike' as its sub-object in a hierarchy.

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"use strict";

// Example 1
const myBike = Object.create(
{
  frameSize: "52",
  color: "blue"
});
const myEBike = {power: "500 Watt"};

// define hierarchy
Object.setPrototypeOf(myEBike, myBike);

console.log(myEBike);