prototypechain2

proto3.js

// Creating the second prototype
const proto2 = function () {};
proto2.prop3 = "proto 2's property"

// Creating the first prototype
const proto1 = Object.create(proto2)
proto1.prop2 = 'protos property';

const obj = Object.create(proto1);
obj.prop = 'object\'s property';

console.log(obj.prop); //=> 'object's property'
console.log(obj.prop2); //=> 'proto's property'
console.log(obj.prop3); //=> 'proto2 property'