prototype examples

prototype.js

// method on prototype

function Foo(){}
Foo.prototype.me = function(){ return "Foo"; };

function Bah(){}
Bah.prototype = new Foo();
Bah.prototype.me = function(){
  return Object.getPrototypeOf(Object.getPrototypeOf(this)).me() + ' & Bah';
};

new Bah().me();
// "Foo & Bah"

// method within constructor (child class wont need to "share" methods so
// use within constructor)

function Foo(){}
Foo.prototype.me = function(){ return "Foo"; };

function Bah(){
  this.me = function(){
    return Object.getPrototypeOf(this).me() + ' & Bah';
  };
}
Bah.prototype = new Foo();

new Bah().me();
//  "Foo & Bah"

// Same as above

function Bah(){
  this.me = function(){
    return Object.getPrototypeOf(this).me() + ' & Bah';
  };
}
Bah.prototype = {
  me: function(){ return "Foo"; }
}

new Bah().me();