z-tree官方提供的下拉菜单案例 | tree官方提供的下拉菜单案例

1、z-tree官方提供的下拉菜单案例
z-tree官方提供的下拉菜单案例-LMLPHP
<!DOCTYPE html>

<HTML>

<HEAD>

    <TITLE> ZTREE DEMO - select menu</TITLE>

    <meta http-equiv="content-type" content="text/html; charset=UTF-8">

    <link rel="stylesheet" href="../../../css/demo.css" type="text/css">

    <link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">

    <script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>

    <script type="text/javascript" src="../../../js/jquery.ztree.core.js"></script>

    <!--  <script type="text/javascript" src="../../../js/jquery.ztree.excheck.js"></script>

      <script type="text/javascript" src="../../../js/jquery.ztree.exedit.js"></script>-->

    <SCRIPT type="text/javascript">

        <!--

        var setting = {

            view: {

                dblClickExpand: false

            },

            data: {

                simpleData: {

                    enable: true

                }

            },

            callback: {

                beforeClick: beforeClick,

                onClick: onClick

            }

        };

        var zNodes =[

            {id:1, pId:0, name:"北京"},

            {id:2, pId:0, name:"天津"},

            {id:3, pId:0, name:"上海"},

            {id:6, pId:0, name:"重庆"},

            {id:4, pId:0, name:"河北省", open:true},

            {id:41, pId:4, name:"石家庄"},

            {id:42, pId:4, name:"保定"},

            {id:43, pId:4, name:"邯郸"},

            {id:44, pId:4, name:"承德"},

            {id:5, pId:0, name:"广东省", open:true},

            {id:51, pId:5, name:"广州"},

            {id:52, pId:5, name:"深圳"},

            {id:53, pId:5, name:"东莞"},

            {id:54, pId:5, name:"佛山"},

            {id:6, pId:0, name:"福建省", open:true},

            {id:61, pId:6, name:"福州"},

            {id:62, pId:6, name:"厦门"},

            {id:63, pId:6, name:"泉州"},

            {id:64, pId:6, name:"三明"}

         ];

        function beforeClick(treeId, treeNode) {

            var check = (treeNode && !treeNode.isParent);

            if (!check) alert("只能选择城市...");

            return check;

        }

        function onClick(e, treeId, treeNode) {

            var zTree = $.fn.zTree.getZTreeObj("treeDemo"),

            nodes = zTree.getSelectedNodes(),

            v = "";

            nodes.sort(function compare(a,b){return a.id-b.id;});

            for (var i=0, l=nodes.length; i<l; i++) {

                v += nodes[i].name + ",";

            }

            if (v.length > 0 ) v = v.substring(0, v.length-1);

            var cityObj = $("#citySel");

            cityObj.attr("value", v);

        }

        function showMenu() {

            var cityObj = $("#citySel");

            var cityOffset = $("#citySel").offset();

            $("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast");

            $("body").bind("mousedown", onBodyDown);

        }

        function hideMenu() {

            $("#menuContent").fadeOut("fast");

            $("body").unbind("mousedown", onBodyDown);

        }

        function onBodyDown(event) {

            if (!(event.target.id == "menuBtn" || event.target.id == "menuContent" || $(event.target).parents("#menuContent").length>0)) {

                hideMenu();

            }

        }

        $(document).ready(function(){

            $.fn.zTree.init($("#treeDemo"), setting, zNodes);

        });

        //-->

    </SCRIPT>

    <style type="text/css">

    </style>

 </HEAD>

<BODY>

<h1>下拉菜单</h1>

<h6>[ 文件路径: super/select_menu.html ]</h6>

<div class="content_wrap">

    <div class="zTreeDemoBackground left">

        <ul class="list">

            <li class="title">&nbsp;&nbsp;<span class="highlight_red">选择城市时，按下 Ctrl 或 Cmd 键可以进行多选</span></li>

            <li class="title">&nbsp;&nbsp;城市：<input id="citySel" type="text" readonly value="" style="width:120px;"/>

        &nbsp;<a id="menuBtn" href="#" onclick="showMenu(); return false;">选择</a></li>

        </ul>

    </div>

    <div class="right">

        <ul class="info">

            <li class="title"><h2>实现方法说明</h2>

                <ul class="list">

                <li>用 zTree 实现这种下拉菜单，应该说是比较容易的，你只需要控制 zTree 所在容器的隐藏/显示，以及位置即可。</li>

                <li class="highlight_red">zTree v3.x 实现了多点选中功能，因此对于需要多选的下拉菜单也易如反掌。</li>

                <li class="highlight_red">利用 setting 的各项配置参数，完全可以满足大部分的功能需求。</li>

                </ul>

            </li>

        </ul>

    </div>

</div>

<div id="menuContent" class="menuContent" style="display:none; position: absolute;">

    <ul id="treeDemo" class="ztree" style="margin-top:0; width:160px;"></ul>

</div>

</BODY>

</HTML>