[Bootstrap] 버튼 로딩 효과 / button loading

<button type="button" id="myButton" data-loading-text="Loading..." class="btn btn-primary" autocomplete="off">
  Loading state
</button>

<script>
  $('#myButton').on('click', function () {
    var $btn = $(this).button('loading');
    // business logic...
    $btn.button('reset');
  })
</script>

참고 :
http://getbootstrap.com/javascript/#buttons