Outer-Arrow_funtion-Inner-Arrow-Function.js

// CASE #3: OuterFunction = arrow function, InnerFunction = arrow function
// Object with one method only, can directly execute the method.

// In this case the object will return nothing when created. This case is bad way in creating object.

const Student = () => {
 this.name = "Mike Lewis";
 this.age = 24;
 console.log(this);
 this.sayHello = () => {
   console.log(`Hi, my name is ${this.name} I am ${this.age} years old. Nice to meet you.`);
   console.log(this);
 }
 return this.sayHello;
}

let student = Student();
student();

// output di console:
// Nothing, it is because "this" tidak dikenal pada arrow function.

// The above can be modified as below to work:

const Student1 = () => {
 this.name = "Mike Lewis";
 this.age = 24;
 this.sayHello = () => {
   console.log(`Hi, my name is ${this.name} I am ${this.age} years old. Nice to meet you.`);
 }
 return this.sayHello();
}

Student1();

// output:
// "Hi, my name is Mike Lewis I am 24 years old. Nice to meet you."