JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://amatiasq.com/fiddle-console.js"></script>

JavaScript

var base = {
	name: 'hello',
  surname: 'world!',
  fullname: function() {
  	return this.name + ' ' + this.surname;
  }
}


function prueba() {}
prueba.prototype = base;

var instance = new prueba();

console.log(instance.fullname);