An example of a function thats uses .bind instead of anonymous function wrappers.

function-using-bind.js

var stateManger = function () {
  var active   = false;
  var setState = function(state) {
    active = state;
  };

  return {
    toggle      : setState.bind(this, !active),
    setActive   : setState.bind(this, true),
    setInactive : setState.bind(this, false)
  };
};