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import https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.1.0/css/font-awesome.min.css

  <button type="button" class="btn btn-primary" data-loading-text="<i class='fa fa-circle-o-notch fa-spin'></i> Processing Order">Submit Order</button>
  
  <script>
    $('.btn').on('click', function() {
      var $this = $(this);
      $this.button('loading');
      setTimeout(function() {
         $this.button('reset');
      }, 2000);
    });
  </script>

https://codepen.io/jmalatia/pen/HkmaA