bootstrap.js

  }


 /* AFFIX DATA-API
  * ============== */

  $(window).on('load', function () {
    $('[data-spy="affix"]').each(function () {
      var $spy = $(this)
        , data = $spy.data()

      data.offset = data.offset || {}

      data.offsetBottom && (data.offset.bottom = data.offsetBottom)
      data.offsetTop && (data.offset.top = data.offsetTop)

      $spy.affix(data)
    })
  })


}(window.jQuery);