compare properties

var inherit = function(a, b) {
	function c() {
  }
  c.prototype = b.prototype;
  a.superClass_ = b.prototype;
  a.prototype = new c;
  a.prototype.constructor = a;
  a.base = function(a, c, f) {
    for (var g = Array(arguments.length - 2), h = 2;h < arguments.length;h++) {
      g[h - 2] = arguments[h];
    }
    return b.prototype[c].apply(a, g);
  };
};

var Obj = function() {};

Obj.prototype.prop = 0;

var ChildObj = function() {};
inherit(ChildObj, Obj);

var obj = new Obj;
var childObj = new ChildObj;

console.log(obj.prop);
console.log(childObj.prop);
obj.prop = 1;

console.log(obj.prop);
console.log(childObj.prop);