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author : Jaydatt Patel

Shallow copy : In Shallow copy, It copy just first level of key and value. If value is any object or array then it will just copy the address of that value.

Note : You can not copy function in Shallow or Deep Copy. Its Possible Library function.

var user1 = {

name: "Amit",

marks: {

maths: 20,

};

console.log("----Shallow Copy using spread----");

var user2 = { ...user1 };

console.log("\nuser2 :", user2);

console.log("\nuser1 :", user1);

user2.name = "Harry"; //this will apply only to user2

user2.marks.maths = 10; // this will apply to user1 and user2

console.log("\nuser2 :", user2);

console.log("\nuser1 :", user1);

console.log("\n----Shallow Copy using Object.assign----");

var user2 = Object.assign({}, user1);

console.log("\nuser2 :", user2);

console.log("\nuser1 :", user1);

user2.name = "Harry"; //this will apply only to user2

user2.marks.maths = 10; // this will apply to user1 and user2

console.log("\nuser2 :", user2);

console.log("\nuser1 :", user1);