HTML代码：

    <div id="xiao">

                        <ul>

<li></li>

</ul>

              </div>

js代码：

<script>

    $(function () {

        $('#xiao').children().eq().attr('id','tree');

//        console.log($('#d').children().eq(0).attr('id'));

        $("#tree").treeview({

            collapsed: true,

            animated: "medium",

            control: "#sidetreecontrol",

            persist: "location"

        });

    })

</script>