arbitrary-constructor-name.js

"use strict";

/* Create a Constructor with an arbitrary name *
 * This allows the resultant object to be of a *
 * named "type", allowing inspection of types  *
 * without adding keys to the object itself    */

function constructorNamed(name) {
    return (new Function(["return function ", name, "() {return this;}"].join('')))();
}

var object = new (constructorNamed("SomeKindOfObject"))();

console.log(object);
document.body.appendChild(document.createTextNode("Constructor name is \"" + object.constructor.name + "\""));