bench.js

var noop = function () { return function (text) { return text + text; }; }
var mws = [noop(), noop(), noop()];

function forloop(text) {
  var l = mws.length;
  for (var i = 0; i < l; i++) {
    text = mws[i].call(text, text) || text;
  }
  return text;
}

function reduce(text) {
  return mws.reduce(function(text, mw) {
    return mw.call(text, text) || text;
  }, text);
}

function bench(fn) {
  var startedAt = +new Date();
  var endedAt = startedAt + 1000;
  var i = 0;
  do {
    fn();
    i++;
  } while (+new Date() < endedAt);
  console.log('%d cycles per second', i);
};


console.log('for loop');
bench(function () {
  forloop('hello world!11..');
});

console.log('reduce');
bench(function() {
  reduce('hello world!11..');
});