JSFiddle - React, Tailwind, and code Playground

by Ishank Dubey

JavaScript

function Person (name, city) {
  this.name = name;
}

Person.prototype.age = 25;

const willem = new Person('Willem');

console.log(willem.__proto__ === Person.prototype); // the __proto__ property on the instance refers to the prototype of the constructor

console.log(willem.age);

willem.age1 = 100;
console.log(willem.age1);