layui 的 tree 怎么动态添加节点

具体的实现是当我鼠标移入“长袖”这个分类时，出现三个icon (如图)，按“增加”按钮，会发送ajax异步请求到后台，在数据库库中增加以“长袖”为父类id 的一个子分类，成功后返回到前台，然后相应的节点下动态添加子节点

string[] s = new string[] { "aaa", "bbb", "ccc", "ddd", "eee" }

treeView1.Nodes.Add(s[0])

TreeNode tn = treeView1.Nodes[0]

foreach (var item in s.Skip(1))

{

tn.Nodes.Add(item)

tn = tn.Nodes[0]

}

<script type="text/javascript">

function getChildren(){

var node = $('#tt1').tree('getSelected') //tt1是你的树的id

if (node){

alert(“有子节点")

} else {

alert("无子节点")

}

}

</script>

<ul id="tt1" class="easyui-tree" animate="true" dnd="false">

<li>

<span>Folder</span>

<ul>

<li state="closed">

<span>Sub Folder 1</span>

<ul>

<li>

<span><a href="">File 11</a></span>

</li>

<li>

<span>File 12</span>

</li>

<li>

<span>File 13</span>

</li>

</ul>

</li>

<li>

<span>File 2</span>

</li>

<li>

<span>File 3</span>

</li>

<li>File 4</li>

<li>File 5</li>

</ul>

</li>

<li>

<span>File21</span>

</li>

</ul>

<a href="#" onclick="getChildren1()">getChildren1</a>

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