ap.hideToast()

<script src="https://gw.alipayobjects.com/as/g/h5-lib/alipayjsapi/3.1.1/alipayjsapi.inc.min.js"></script>

<h2>点击以下按钮查看不同效果</h2>

<button id="J_showToast" class="btn btn-default">显示 toast</button>
<button id="J_hideToast" class="btn btn-default">隐藏 toast</button>

<script>
  var showBtn = document.querySelector('#J_showToast');
  var hideBtn = document.querySelector('#J_hideToast');
  showBtn.addEventListener('click', function(){
    ap.showToast('显示中...');
  });
  hideBtn.addEventListener('click', function(){
    ap.hideToast();
  });
</script>