1、z-tree官方提供的下拉菜单案例
<!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"> <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"> 城市：<input id="citySel" type="text" readonly value="" style="120px;"/> <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; 160px;"></ul> </div> </BODY> </HTML>