This shows an example of how Object.create is use to create prototype

object_create.js

let person = {
  first_name:'lorem',
  last_name:'ipsum',
  getFullName(){
    return `Fullname is ${this.first_name} ${this.last_name}`;
  }
}

let personA = Object.create(person);
personA.first_name = 'ullamcorper'; //overwrite the person first_name property
personA.last_name = 'ipsum'; //overwrite the person last_name property
personA.getFullName(); // output Fullname is ullamcorper ipsum