[tsigel]

kostyanet,
Да

var SomeConstructor = function(name, age) {
  this.name = name;
  this.age = age;
};
SomeConstructor.prototype.getName = function () {
  return this.name;
};
SomeConstructor.prototype.addAge = function () {
  return this.age++;
};

var SomeChild = function () {
  SomeConstructor.apply(this,arguments)
};
SomeChild.prototype = Object.create(SomeConstructor.prototype);
SomeChild.constructor = SomeChild;

SomeChild.prototype.childMethod = function () {
  return true;
}

var child = new SomeChild("child", 20);

alert(JSON.stringify(child, "", 4));
alert(child.childMethod());