// source https://jsbin.com

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>

Hero.prototype.greet = function(){
  console.log(this.name);
}

function Warrior(name,level,weapon){
  Hero.call(this, name, level);
  this.weapon = weapon;
}

Warrior.prototype = Object.create(Hero.prototype);

Hero.prototype.attack = function(){
  console.log(this.name + ' with ' + this.weapon);
}

console.log(Warrior.prototype);

var batman = new Warrior('sam','me','trishool');
batman.greet();
batman.attack();
</script>

Hero.prototype.greet = function(){
  console.log(this.name);
}

function Warrior(name,level,weapon){
  Hero.call(this, name, level);
  this.weapon = weapon;
}

Warrior.prototype = Object.create(Hero.prototype);

Hero.prototype.attack = function(){
  console.log(this.name + ' with ' + this.weapon);
}

console.log(Warrior.prototype);

var batman = new Warrior('sam','me','trishool');
batman.greet();
batman.attack();</script></body>
</html>