jquery树状菜单插件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>jQuery Tree Menu Example</title>
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="jquery.ztree.all.min.js"></script>
    <style>
        .tree {
            width: 100%;
            height: 400px;
        }
    </style>
    <script>
        $(document).ready(function(){
            $("#tree").ztree({
                url: "data.json", // 数据接口
                async: false, // 是否异步加载
                expandLevel: 2, // 展开层级
                onClick: function(event, treeId, treeNode) {
                    console.log(treeNode.name);
                }
            });
        });
    </script>
</head>
<body>
    <div id="tree" class="tree"></div>
</body>
</html>