ConstructorFunction.js

// this and function => object


// string literal
const em1 = {
    name :"abc",
    lastName: 'xyz'
}

const emp12 = {
    name: "abc2",
    lastName: 'xyz2'

}

const emp31 = {
    name: "ABC2",
    lastName: 'xyz3'
}


// constructor Function
function Employee (name ,  lastName) {
console.log("this as first" , this)
this.name = name,
console.log("this as second" , this)
this.lastName = lastName
console.log("this=>>" , this)
}


const empl1 = new Employee("Gilkrist" ,"Jain" ); // emp1 will be reference with given parameter
const emp2 = new Employee("Vishal" , "Sharma");

console.log("em1=> " , empl1)
console.log("em2=> " , emp2)

const empl3 = new Employee("Vishal"  ,"sharma");
console.log(empl3)


// what is the difference b/w creating the object using literal and constructor


// everytime you will create the object using constructor that will be always unique if you add modify anything that will not impact its parent
// in the object literal object are not unique and  they are sinleton and if you modify child object that will impact the properties of the parent object

// Can we create constructor function using the arrow functions  ?? 

const data = {
    name: "Vishal"
}

let number =  new Number(10); // let a = 10;
let object =  new Object({name: "Vishal" , lastName: ""}); // multi instance
let string = new String("name"); // let s = "name";
let boolean = new Boolean(true); // let check = true



const employeeArrow = ()=> {
     this.name = "Hello";
     console.log(this)
}


const emparrow =  new employeeArrow(); // this line will throw error because here employeeArrow will not work as the constructor function 
console.log(emparrow)