test the concept of chaining prototypes in javascript

javascript prototype chaining

var A = function(){
  console.log("constructor A");
  //create an attribute
  this.a0 = "a0"; 
}

//adding another attribute
A.prototype.a1 = "a1";


var B = function(){
  console.log("constructor B");
  //invoke parent constructor to create a0 here
  A.call(this);
 //create a own attribute
 this.b0 = "b0";
}

//chaining the prototypes
B.prototype = new A(); 

//adding another attribute
B.prototype.b1 = "b1"; 

console.log("creating object a");
var a = new A();
console.log(a);
console.log(a.a0);
console.log(a.a1);

console.log("creating object b");
var b = new B();
console.log(b);
console.log(b.a0);
console.log(b.a1);
console.log(b.b0);
console.log(b.b1);