Clean property loading for JavaScript and Drupal settings

/**
 * Get a property from an existing object.
 *
 * This tests each property level as you go so that you don't have to.
 *
 * Example: getProperty(someObj, 'myData.user.email');
 *
 * @param obj - Object you are testing
 * @param property - Property you are looking for (can be a string of property levels)
 * @returns {*} - The content of that property.
 */
function getProperty(obj, property) {
  if (typeof obj != 'undefined' && typeof obj == 'object') {
    var propertyChildren = null;

    //Break down a string of properties into an array
    if (typeof property == 'string' && property.indexOf('.')) {
      propertyChildren = property.split('.');
      property = propertyChildren.shift();
    }
    else if (typeof property == 'object' && property.length > 0) {
      propertyChildren = property;
      property = propertyChildren.shift();
    }

    if (typeof obj[property] != 'undefined') {
      if (propertyChildren != null && propertyChildren.length > 0) {
        return getProperty(obj[property], propertyChildren);
      }

      return obj[property];
    }
  }

  return null;
}

/**
 * Get a setting from Drupal.settings.
 *
 * This searches recursively and makes sure we don't throw any JS errors along the way.
 * Pass into it the var name like you were calling the object param normally.
 *
 * Example: getSetting('company.user_info.uid');
 *
 * @param setting
 * @returns {*}
 */
function getSetting(setting) {
  if (typeof Drupal != 'undefined' && typeof Drupal.settings != 'undefined') {
    var settingChildren = null;
    var currentLevel = null;

    if (typeof setting == 'string' && setting.indexOf('.')) {
      settingChildren = setting.split('.');
      setting = settingChildren.shift();
    }

    if (typeof Drupal.settings[setting] != 'undefined') {
      currentLevel = Drupal.settings[setting];

      if (settingChildren != null) {
        settingChildren.forEach(function(elem, index, arr) {
          if (typeof currentLevel[elem] != 'undefined') {
            currentLevel = currentLevel[elem];
          }
          else {
            return null;
          }
        });
      }

      return currentLevel;
    }
  }

  return null;
}

/**
 * Gets a default value for empty vars.
 *
 * @param item
 * @returns {*}
 */
function getVar(item) {
  if (item !== null) {
    return item;
  }

  return '';
}

/**
 * Gets a clean var from settings.
 *
 * @param setting
 * @returns {*}
 */
function getSettingVar(setting) {
  return getVar( getSetting(setting) );
}