JSFiddle - React, Tailwind, and code Playground
JavaScript
// test for proto
function Car(name)
{
this.brand = name;
this.service = function() { alert("Serivce err !");}
}
// adding function to proto so that fn does not get repeated in each instance of objects
Car.prototype.drive = function() { alert("zoo zoooo !!"); }
var carA = new Car("Maruti");
var carB = new Car("Tata");
carB.drive();
console.log(carA);