Bootstrap 中没有流行音乐

Pops don't show in Bootstrap

我的 html 文件中有此代码:

<a href="#" class='nav-link m-2 menu-item' style="color:#ceaa63" data-placement="bottom" data-toggle="popover" data-title="Title" data-content="Some content">
             <i class="fas fa-shopping-cart pr-1"></i>Cart
</a>


<script>
        $(function(){
            $('[data-toggle="popover"]').popover()
        });
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>

点击购物车后弹出窗口不显示。这段代码有什么问题?

您正在加载脚本文件之前访问 popoverjquery 相关函数。

在加载 jquery, popover and bootstrap.min.js 文件后,将脚本文件放在最后。

(function() {
  $('[data-toggle="popover"]').popover()
})();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<a href="#" class='nav-link m-2 menu-item' style="color:#ceaa63" data-placement="bottom" data-toggle="popover" data-title="Title" data-content="Some content">
  <i class="fas fa-shopping-cart pr-1"></i>Cart
</a>