Assign object in another object in javascript

 let person = {

  fanme: "Jitendra",

  lname: "Singh",

};

let person1 = person;

person2.lname = "pal";

// It will change the original object (person1)

let person2 = Object.assign({}, person);

person2.lname = "mishra";

// It will not change the original object

let person3 = Object.create(person);

person3.lname = "yadav";

// It will not change the original object

let person4 = {...person};

person4.lname = "pandey";

// It will not change the original object

console.log(person);

console.log(person2)

console.log(person3);

console.log(person4);

https://jsfiddle.net/jitsingh79/cvqz1j3h/31/