Javascript Objects

A. JS Objects.md

Javascript Objects

info: https://www.youtube.com/watch?v=XoQKXDWbL1M&list=PLQ9UGuDU7vgBIbJN5GE9voObuMZtohZIr&index=13&t=5s info: https://www.youtube.com/watch?v=nnwD5Lwwqdo&t=5s

index.js

// Various ways of creating objects

// a.
const Person = function (name) {
  this.name = name;

  this.getName = function() {
    console.log(this.name);
  }
}

const jose = new Person('guillaume');
jose.getName();

// b.
const Person2 = {
  firstName: "John",

  getName() {
    console.log(this.firstName);
  }
};

Person2.getName();

// Factory
const createMonster = (name) => ({
  name,

  getName() {
    console.log(name);
  }
});

const Monster = createMonster('lolz');
const Monster2 = createMonster('Coucou');

Monster.getName();
Monster2.getName();

// Closure
const multiplyByTwo = (a) => {
 return function (b) {
   console.log(a + b);
 };
};

multiplyByTwo(2)(3);
const intermediateStep = multiplyByTwo(2);
intermediateStep(3);

// Composition
const flyer = ({ name }) => {
  return {
    fly: () => console.log(`${name} flew`),
  }
};

const huger = ({ name }) => {
  return {
    hug: () => console.log(`${name} huggued`),
  }
};

const Monster3 = (name) => {
  const monster = { name };

  return {
    ...flyer(monster),
    ...huger(monster),
  }
}

const obj = Monster3('Herve');
obj.fly();
obj.hug();