Function forEach

test/angular/1.2/angular.js:312–338

* @ngdoc function * @name angular.forEach * @module ng * @kind function * * @description * Invokes the `iterator` function once for each item in `obj` collection, which can be either an * object or an array. The `iterator` function is invoked with `iterator(value, key)`, where `value` * is t

(obj, iterator, context)

 * @returns {Object|Array} Reference to `obj`.
 */
function forEach(obj, iterator, context) {
  var key;
  if (obj) {
    if (isFunction(obj)) {
      for (key in obj) {
        // Need to check if hasOwnProperty exists,
        // as on IE8 the result of querySelectorAll is an object without a hasOwnProperty function
        if (key != 'prototype' && key != 'length' && key != 'name' && (!obj.hasOwnProperty || obj.hasOwnProperty(key))) {
          iterator.call(context, obj[key], key);
        }
      }
    } else if (isArray(obj) || isArrayLike(obj)) {
      for (key = 0; key < obj.length; key++) {
        iterator.call(context, obj[key], key);
      }
    } else if (obj.forEach && obj.forEach !== forEach) {
        obj.forEach(iterator, context);
    } else {
      for (key in obj) {
        if (obj.hasOwnProperty(key)) {
          iterator.call(context, obj[key], key);
        }
      }
    }
  }
  return obj;
}

function sortedKeys(obj) {
  var keys = [];