效果如下：
代碼如下：
<!doctype html>
<html>
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</head>
<body>
<div class="alert alert-success" id="success-alert">
<button type="button" class="close" data-dismiss="alert">x</button>
<strong>成功! </strong> 我的第一個提示彈框.
</div>
<div Style="height:100px">
<p Style="padding-top:50px">使用bootstrap和jQuery制作彈窗</p>
</div>
<div class="product-options">
<button id="myWish" class="btn btn-success">點我彈出彈框 </button>
</div>
</body>
<script>
$(document).ready(function() {
//沒點選的時候隐藏彈框
$("#success-alert").hide();
//點選的時候彈出彈框2秒
$("#myWish").click(function showAlert() {
$("#success-alert").fadeTo(2000, 500).slideUp(500, function() {
$("#success-alert").slideUp(500);
});
});
});
</script>
</html>
參考：
Bootstrap Alert Auto Close
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