<button type="button" class="am-btn am-btn-primary js-modal-open">打开 Modal</button>

<div class="am-modal am-modal-no-btn" tabindex="-1" id="your-modal">
  <div class="am-modal-dialog">
    <div class="am-modal-hd"> Modal 标题
      <a href="javascript: void(0)" class="am-close am-close-spin" data-am-modal-close>×</a>
    </div>
    <div class="am-modal-bd">
      Modal 内容。
    </div>
  </div>
</div>

<script>
  $(function() {
    var $modal = $('#your-modal');

    $modal.siblings('.am-btn').on('click', function(e) {
      var $target = $(e.target);
      if (($target).hasClass('js-modal-open')) {
        $modal.modal();
      } else if (($target).hasClass('js-modal-close')) {
        $modal.modal('close');
      } else {
        $modal.modal('toggle');
      }
    });
  });
</script>