Yet another inherit library.

inherit.js

var extend = function(target, source) {
  for (var i in source) {
    if (source.hasOwnProperty(i)) {
      target[i] = source[i];
    }
  }
  return target;
};

var objectCreate = function(ParentProto, ChildProto) {
  if (Object.create) {
    ChildProto = Object.create(ParentProto);
  } else {
    var F = function(){};
    F.prototype = ParentProto;
    ChildProto = new F();  
  }
  return ChildProto;
};

var inherit = function(Parent, Child, staticProp) {
   Child.prototype = objectCreate(Parent.prototype, Child.prototype);
   extend(Child, staticProp);
   Child.prototype.constructor = Child;
   Child.prototype.super = Parent;
   return Child;
};

var A = function (){
  this.a = 'a';
  console.log(111);
};
A.prototype.aa = 'aa';
A.prototype.methodA = function() {
  return this.aa;
};

var B = inherit(A, function(){
  this.bc = 5;
  this.super();
}, {
  static: function() {
    console.log(this.prototype.super());
  }
});

B.prototype.methodB = function() {
  return this.b;
};

var b = new B();
b.static();