Simple Monad example in JavaScript

monad.js

// as discussed by Crockford here: http://www.youtube.com/watch?v=dkZFtimgAcM
// more detailed example here: https://github.com/douglascrockford/monad/blob/master/monad.js

function MONAD() {
  return function unit(value) {
    var monad = Object.create(null);
    monad.bind = function (func) {
      return func(value);
    };
    return monad;
  };
}


var identity = MONAD();
var monad = identity('hello world');
monad.bind(alert);