Foreach from MoutJS. Never write a for loop again!

foreach.js

var forEach = function(arr, callback, thisObj) {
  if (arr === null) {
    return;
  }
  var i = -1,
    len = arr.length;
  while (++i < len) {
    // we iterate over sparse items since there is no way to make it
    // work properly on IE 7-8. see #64
    if (callback.call(thisObj, arr[i], i, arr) === false) {
      break;
    }
  }
};