treeview 三级目录功能导航源码和数据库

最新推荐文章于 2020-12-20 08:13:00 发布
最新推荐文章于 2020-12-20 08:13:00 发布
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分类专栏： 导航控件TreeView/Menu/SiteMapPath 文章标签： function null table dataset schema html
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.youkuaiyun.com/zxl0715/article/details/5406746
本文介绍了一种使用ASP.NET实现菜单树控件的方法，通过C#代码结合SQL Server数据库，实现了动态加载多级菜单的功能，并提供了完整的HTML、C#和JavaScript代码示例。

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using System;  
using System.Data;  
using System.Configuration;  
using System.Collections;  
using System.Web;  
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Web.UI.WebControls.WebParts;  
using System.Web.UI.HtmlControls;  
using System.Data.SqlClient;  
public partial class TreeMenu_mainleft : System.Web.UI.Page  
{  
    protected void Page_Load(object sender, EventArgs e)  
    {  
        if (!Page.IsPostBack)  
        {  
            BindTreeMenuList();  
        }  
    } 
    #region Binding Data to the TreeView  
    protected void BindTreeMenuList()  
    {  
        SqlConnection sqlCon = new SqlConnection(@"Server=192.168.1.6;DataBase=WebUU;Uid=sa;Pwd=123;");  
        DataSet Ds = new DataSet();  
        SqlDataAdapter sqlDA = new SqlDataAdapter("select * from [tb_menutree] where [i_mid]=0 and [i_id] in(select mid from [tb_MenuTreeUser] where userid=1 and type=1)", sqlCon);  
        sqlDA.Fill(Ds, "One");  
        TreeNode parentNode;  
        TreeNode childNode;  
        TreeNode townNode;  
        if (Ds.Tables["One"].Rows.Count > 0)  
        {  
            foreach (DataRow parentRow in Ds.Tables["One"].Rows)  
            {  
                //Binding the first node  
                parentNode = new TreeNode(parentRow["vc_name"].ToString());  
                //don't Expend childnode  
                parentNode.Expanded = false;  
                parentNode.SelectAction = TreeNodeSelectAction.Expand;  
                TreeMenuList.Nodes.Add(parentNode);  
                SqlDataAdapter sqlDAP = new SqlDataAdapter("select * from [tb_menutree] where [i_mid]='" + parentRow["i_id"].ToString() + "'", sqlCon);  
                 
                sqlDAP.Fill(Ds, "Two");  
                //Binding Data to the second nodes  
                if (Ds.Tables["Two"].Rows.Count > 0)  
                {  
                    foreach (DataRow childRow in Ds.Tables["Two"].Rows)  
                    {  
                        childNode = new TreeNode(childRow["vc_name"].ToString());  
                        parentNode.ChildNodes.Add(childNode);  
                        childNode.NavigateUrl = childRow["vc_path"].ToString();  
                        childNode.Target = "Mains";  
                        string strSQL3 = "select * from [tb_menutree] where [i_mid]='" + childRow["i_id"].ToString() + "'";  
                        SqlDataAdapter sqlDAPA = new SqlDataAdapter(strSQL3, sqlCon);  
                         
                        sqlDAPA.Fill(Ds, "three");  
                        childNode.Expanded = false;  
                        if (Ds.Tables["three"].Rows.Count > 0)  
                        {  
                            foreach (DataRow lastRow in Ds.Tables["three"].Rows)  
                            {  
                                townNode = new TreeNode(lastRow["vc_name"].ToString());  
                                childNode.ChildNodes.Add(townNode);  
                                townNode.NavigateUrl = childRow["vc_path"].ToString();  
                                townNode.Target = "Mains";  
                            } Ds.Tables["three"].Clear();  
                        }  
                    }  
                    Ds.Tables["Two"].Clear();  
                }  
            }  
            Ds.Tables["One"].Clear();  
        }  
    } 
    #endregion  
} 
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class TreeMenu_mainleft : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            BindTreeMenuList();
        }
    }
    #region Binding Data to the TreeView
    protected void BindTreeMenuList()
    {
        SqlConnection sqlCon = new SqlConnection(@"Server=192.168.1.6;DataBase=WebUU;Uid=sa;Pwd=123;");
        DataSet Ds = new DataSet();
        SqlDataAdapter sqlDA = new SqlDataAdapter("select * from [tb_menutree] where [i_mid]=0 and [i_id] in(select mid from [tb_MenuTreeUser] where userid=1 and type=1)", sqlCon);
        sqlDA.Fill(Ds, "One");
        TreeNode parentNode;
        TreeNode childNode;
        TreeNode townNode;
        if (Ds.Tables["One"].Rows.Count > 0)
        {
            foreach (DataRow parentRow in Ds.Tables["One"].Rows)
            {
                //Binding the first node
                parentNode = new TreeNode(parentRow["vc_name"].ToString());
                //don't Expend childnode
                parentNode.Expanded = false;
                parentNode.SelectAction = TreeNodeSelectAction.Expand;
                TreeMenuList.Nodes.Add(parentNode);
                SqlDataAdapter sqlDAP = new SqlDataAdapter("select * from [tb_menutree] where [i_mid]='" + parentRow["i_id"].ToString() + "'", sqlCon);
              
                sqlDAP.Fill(Ds, "Two");
                //Binding Data to the second nodes
                if (Ds.Tables["Two"].Rows.Count > 0)
                {
                    foreach (DataRow childRow in Ds.Tables["Two"].Rows)
                    {
                        childNode = new TreeNode(childRow["vc_name"].ToString());
                        parentNode.ChildNodes.Add(childNode);
                        childNode.NavigateUrl = childRow["vc_path"].ToString();
                        childNode.Target = "Mains";
                        string strSQL3 = "select * from [tb_menutree] where [i_mid]='" + childRow["i_id"].ToString() + "'";
                        SqlDataAdapter sqlDAPA = new SqlDataAdapter(strSQL3, sqlCon);
                      
                        sqlDAPA.Fill(Ds, "three");
                        childNode.Expanded = false;
                        if (Ds.Tables["three"].Rows.Count > 0)
                        {
                            foreach (DataRow lastRow in Ds.Tables["three"].Rows)
                            {
                                townNode = new TreeNode(lastRow["vc_name"].ToString());
                                childNode.ChildNodes.Add(townNode);
                                townNode.NavigateUrl = childRow["vc_path"].ToString();
                                townNode.Target = "Mains";
                            } Ds.Tables["three"].Clear();
                        }
                    }
                    Ds.Tables["Two"].Clear();
                }
            }
            Ds.Tables["One"].Clear();
        }
    }
    #endregion
}
 

数据库创建的sql语句如下：

表一：

USE [WebUU]

GO

/****** 对象:  Table [dbo].[tb_AdminUser]    脚本日期: 05/22/2009 14:48:34 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_PADDING ON

GO

CREATE TABLE [dbo].[tb_AdminUser](

[i_id] [int] IDENTITY(1,1) NOT NULL,

[au_username] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_password] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_name] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_createtime] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_lasttime] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_class] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_zhiwu] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[au_count] [int] NULL,

[au_is] [int] NULL,

 CONSTRAINT [PK_tb_AdminUser] PRIMARY KEY CLUSTERED

(

[i_id] ASC

)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]

) ON [PRIMARY]

GO

SET ANSI_PADDING OFF

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'用户名' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_username'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'密码' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_password'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'真实姓名' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_name'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'创建时间' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_createtime'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'最后一次登陆时间' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_lasttime'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'部门' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_class'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'登陆次数' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_count'

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'是否启用禁用' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_AdminUser', @level2type=N'COLUMN', @level2name=N'au_is'

表二：
USE [WebUU]

GO

/****** 对象:  Table [dbo].[tb_MenuTree]    脚本日期: 05/22/2009 14:49:58 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_PADDING ON

GO

CREATE TABLE [dbo].[tb_MenuTree](

[I_Id] [int] IDENTITY(1,1) NOT NULL,

[i_mid] [int] NULL,

[vc_Name] [varchar](100) COLLATE Chinese_PRC_CI_AS NOT NULL,

[vc_Path] [varchar](200) COLLATE Chinese_PRC_CI_AS NULL

) ON [PRIMARY]

GO

SET ANSI_PADDING OFF

表三：

USE [WebUU]

GO

/****** 对象:  Table [dbo].[tb_MenuTreeUser]    脚本日期: 05/22/2009 14:50:30 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

SET ANSI_PADDING ON

GO

CREATE TABLE [dbo].[tb_MenuTreeUser](

[id] [int] IDENTITY(1,1) NOT NULL,

[Mid] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[userid] [varchar](50) COLLATE Chinese_PRC_CI_AS NULL,

[type] [int] NULL CONSTRAINT [DF_tb_MenuTreeUser_type]  DEFAULT ((1))

) ON [PRIMARY]

GO

SET ANSI_PADDING OFF

GO

EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'默认不显示（０）（１）为显示' ,@level0type=N'SCHEMA', @level0name=N'dbo', @level1type=N'TABLE', @level1name=N'tb_MenuTreeUser', @level2type=N'COLUMN', @level2name=N'type'

html代码如下：
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Tree.aspx.cs" Inherits="admin_Tree" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<HTML> 
    <HEAD runat="server"> 
        <title>Temp</title> 
        <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> 
        <meta name="CODE_LANGUAGE" Content="C#"> 
        <meta name="vs_defaultClientScript" content="JavaScript"> 
        <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> 
        <mce:script language="javascript" src="js/MenuJs.js" mce_src="js/MenuJs.js"></mce:script> 
    </HEAD> 
    <body bgcolor="#cfd6e9"> 
        <form id="Form1" method="post" runat="server"> 
            <table width="100%" border="0" cellspacing="0" cellpadding="0"> 
                <tr> 
                    <td> 
                        <asp:TreeView ID="TreeMenuList" runat="server" ImageSet="Events" ShowLines="True"> 
                            <ParentNodeStyle Font-Bold="False" /> 
                            <HoverNodeStyle Font-Underline="False" ForeColor="Red" /> 
                            <SelectedNodeStyle Font-Underline="True" HorizontalPadding="0px" VerticalPadding="0px" /> 
                            <NodeStyle Font-Names="Verdana" Font-Size="8pt" ForeColor="Black" HorizontalPadding="5px" 
                                NodeSpacing="0px" VerticalPadding="0px" /> 
                        </asp:TreeView> 
                    </td> 
                </tr> 
            </table> 
        </form> 
    </body> 
</HTML> 
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Tree.aspx.cs" Inherits="admin_Tree" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<HTML>
 <HEAD runat="server">
  <title>Temp</title>
  <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
  <meta name="CODE_LANGUAGE" Content="C#">
  <meta name="vs_defaultClientScript" content="JavaScript">
  <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
  <mce:script language="javascript" src="js/MenuJs.js" mce_src="js/MenuJs.js"></mce:script>
 </HEAD>
 <body bgcolor="#cfd6e9">
  <form id="Form1" method="post" runat="server">
   <table width="100%" border="0" cellspacing="0" cellpadding="0">
    <tr>
     <td>
         <asp:TreeView ID="TreeMenuList" runat="server" ImageSet="Events" ShowLines="True">
                            <ParentNodeStyle Font-Bold="False" />
                            <HoverNodeStyle Font-Underline="False" ForeColor="Red" />
                            <SelectedNodeStyle Font-Underline="True" HorizontalPadding="0px" VerticalPadding="0px" />
                            <NodeStyle Font-Names="Verdana" Font-Size="8pt" ForeColor="Black" HorizontalPadding="5px"
                                NodeSpacing="0px" VerticalPadding="0px" />
                        </asp:TreeView>
     </td>
    </tr>
   </table>
  </form>
 </body>
</HTML>
 
其中的js代码为：
<!--
/*---------------------------------------------------------------------------*/
|  Subject:       Web TreeView Class                                          |
|  Version:       1.0                                                         |
|  Author:        黄方荣【meizz】【梅花雪】                                   |
|  FileName:      MzTreeView.js                                               |
|  Created:       2004-10-18                                                  |
|  LastModified:  2005-03-10                                                  |
|  Download:      http://www.meizz.com/Web/Download/MzTreeView10.rar          |
|  Explain:       http://www.meizz.com/Web/Article.asp?id=436                 |
|  Demo:          http://www.meizz.com/Web/Demo/MzTreeView10.htm              |
|                                                                             |
|                 You may use this code on your item                          |
|                 this entire copyright notice appears unchanged              |
|                 and you clearly display a link to http://www.meizz.com/     |
|                                                                             |
|-----------------------------------------------------------------------------|
|  MSN: huangfr@msn.com   QQ: 112889082   http://www.meizz.com                |
|  优快云 Community ID: meizz      Copyright (c) 2004-2005 meizz                |
/*---------------------------------------------------------------------------*/

//MzTreeView1.0网页树类, 在实例化的时候请把实例名作参数传递进来
function MzTreeView(Tname)
{
  if(typeof(Tname) != "string" || Tname == "")
    throw(new Error('创建类实例的时候请把类实例的引用变量名传递进来！'));
 
  //【property】
  this.url      = "#";
  this.target   = "_self";
  this.name     = Tname;
  this.wordLine = false;
  this.currentNode = null;
  this.useArrow = true;
  this.nodes = {};
  this.node  = {};
  this.names = "";
  this._d    = "/x0f";
  this.index = 0;
  this.divider   = "_";
  this.rootId = "-1";
  this.colors   =
  {
    "highLight" : "#0A246A",
    "highLightText" : "#FFFFFF",
    "mouseOverBgColor" : "#D4D0C8"
  };
  this.icons    = {
    L0        : 'L0.gif',  //┏
    L1        : 'L1.gif',  //┣
    L2        : 'L2.gif',  //┗
    L3        : 'L3.gif',  //━
    L4        : 'L4.gif',  //┃
    PM0       : 'P0.gif',  //＋┏
    PM1       : 'P1.gif',  //＋┣
    PM2       : 'P2.gif',  //＋┗
    PM3       : 'P3.gif',  //＋━
    empty     : 'L5.gif',     //空白图
    root      : 'root.gif',   //缺省的根节点图标
    folder    : 'folder.gif', //缺省的文件夹图标
    file      : 'file.gif',   //缺省的文件图标
    exit      : 'exit.gif'
  };
  this.iconsExpand = {  //存放节点图片在展开时的对应图片
    PM0       : 'M0.gif',     //－┏
    PM1       : 'M1.gif',     //－┣
    PM2       : 'M2.gif',     //－┗
    PM3       : 'M3.gif',     //－━
    folder    : 'folderopen.gif',
    exit      : 'exit.gif'
  };
  //扩展 document.getElementById(id) 多浏览器兼容性
  //id 要查找的对象 id
  this.getElementById = function(id)
  {
    if (typeof(id) != "string" || id == "") return null;
    if (document.getElementById) return document.getElementById(id);
    if (document.all) return document.all(id);
    try {return eval(id);} catch(e){ return null;}
  }
  //MzTreeView 初始化入口函数
  this.toString = function()
  {
    this.browserCheck();
    this.dataFormat();
    this.setStyle();
    this.node["0"] =
    {
      "id": "0",
      "path": this.rootId,
      "isLoad": false,
      "childNodes": [],
      "childAppend": "",
      "sourceIndex": this.rootId
    };
    this.load("0");
    var rootCN = this.node["0"].childNodes;
    var str = "<A id='"+ this.name +"_RootLink' href="#" mce_href="#" style="DISPLAY: none" mce_style="DISPLAY: none"></A>";
   
    if(rootCN.length>0)
    {
      this.node["0"].hasChild = true;
      for(var i=0; i<rootCN.length; i++)
        str += this.nodeToHTML(rootCN[i], i==rootCN.length-1);
      //setTimeout(this.name +".expand('"+ rootCN[0].id +"', true); "+
      //  this.name +".focusClientNode('"+ rootCN[0].id +"'); "+ this.name +".atRootIsEmpty()",10);
      setTimeout(this.name +".atRootIsEmpty();"+ this.name +".focusClientNode('"+ rootCN[0].id +"'); ",10);
    }
    if (this.useArrow)  //使用方向键控制跳转到上级下级父级子级节点
    {
      if (document.attachEvent)
          document.attachEvent("onkeydown", this.onkeydown);
      else if (document.addEventListener)
          document.addEventListener('keydown', this.onkeydown, false);
    }
    return "<DIV class='MzTreeView' "+
      "onclick='"+ this.name +".clickHandle(event)' "+
      "ondblclick='"+ this.name +".dblClickHandle(event)' "+
      ">"+ str +"</DIV>";
  };
  this.onkeydown= function(e)
  {
    e = window.event || e; var key = e.keyCode || e.which;
    switch(key)
    {
      case 37 : eval(Tname).upperNode(); break;  //Arrow left, shrink child node
      case 38 : eval(Tname).pervNode();  break;  //Arrow up
      case 39 : eval(Tname).lowerNode(); break;  //Arrow right, expand child node
      case 40 : eval(Tname).nextNode();  break;  //Arrow down
    }
  };
}
//浏览器类型及版本检测
MzTreeView.prototype.browserCheck = function()
{
  var ua = window.navigator.userAgent.toLowerCase(), bname;
  if(/msie/i.test(ua))
  {
    this.navigator = /opera/i.test(ua) ? "opera" : "";
    if(!this.navigator) this.navigator = "msie";
  }
  else if(/gecko/i.test(ua))
  {
    var vendor = window.navigator.vendor.toLowerCase();
    if(vendor == "firefox") this.navigator = "firefox";
    else if(vendor == "netscape") this.navigator = "netscape";
    else if(vendor == "") this.navigator = "mozilla";
  }
  else this.navigator = "msie";
  if(window.opera) this.wordLine = false;
};
//给 TreeView 树加上样式设置
MzTreeView.prototype.setStyle = function()
{
  /*
    width: 16px; /
    height: 16px; /
    width: 20px; /
    height: 20px; /
  */
  var style = "<style>"+
  "DIV.MzTreeView DIV IMG{border: 0px solid #FFFFFF;}"+
  "DIV.MzTreeView DIV SPAN IMG{border: 0px solid #FFFFFF;}";
  if(this.wordLine)
  {
    style +="/
    DIV.MzTreeView DIV/
    {/
      height: 20px;"+
      (this.navigator=="firefox" ? "line-height: 20px;" : "" ) +
      (this.navigator=="netscape" ? "" : "overflow: hidden;" ) +"/
    }/
    DIV.MzTreeView DIV SPAN/
    {/
      vertical-align: middle; font-size: 21px; height: 20px; color: #D4D0C8; cursor: default;/
    }/
    DIV.MzTreeView DIV SPAN.pm/
    {/
      width: "+ (this.navigator=="msie"||this.navigator=="opera" ? "11" : "9") +"px;/
      height: "+ (this.navigator=="netscape"?"9":(this.navigator=="firefox"?"10":"11")) +"px;/
      font-size: 7pt;/
      overflow: hidden;/
      margin-left: -16px;/
      margin-right: 5px;/
      color: #000080; /
      vertical-align: middle;/
      border: 1px solid #D4D0C8;/
      cursor: "+ (this.navigator=="msie" ? "hand" : "pointer") +";/
      padding: 0 2px 0 2px;/
      text-align: center;/
      background-color: #F0F0F0;/
    }";
  }
  style += "<//style>";
  /*alert(document.getElementsByTagName("HEAD")[0].innerHTML);
  if(document.body)
  {
    var head = document.getElementsByTagName("HEAD")[0];
    head.innerHTML = head.innerHTML + style;
  }
  else */
  document.write(style);
};
//当根节点为空的时候做的处理
MzTreeView.prototype.atRootIsEmpty = function()
{
  var RCN = this.node["0"].childNodes;
  for(var i=0; i<RCN.length; i++)
  {
    if(!RCN[i].isLoad) this.expand(RCN[i].id);
    if (RCN[i].text=="")
    {
      var node = RCN[i].childNodes[0], HCN  = node.hasChild;
      if(this.wordLine)
      {
        var span = this.getElementById(this.name +"_tree_"+ node.id);
        span = span.childNodes[0].childNodes[0].childNodes[0];
        span.innerHTML = RCN[i].childNodes.length>1 ? "┌" : "─";
      }
      else
      {
        node.iconExpand  =  RCN[i].childNodes.length>1 ? HCN ? "PM0" : "L0" : HCN ? "PM3" : "L3"
        this.getElementById(this.name +"_expand_"+ node.id).src = this.icons[node.iconExpand].src;
      }
    }
  }
};
//初始化数据源里的数据以便后面的快速检索
MzTreeView.prototype.dataFormat = function()
{
  var a = new Array();
  for (var id in this.nodes) a[a.length] = id;
  this.names = a.join(this._d + this._d);
  this.totalNode = a.length; a = null;
};
//在数据源检索所需的数据节点
//id  客户端节点对应的id
MzTreeView.prototype.load = function(id)
{
  var node = this.node[id], d = this.divider, _d = this._d;
  var sid = node.sourceIndex.substr(node.sourceIndex.indexOf(d) + d.length);
  var reg = new RegExp("(^|"+_d+")"+ sid +d+"[^"+_d+d +"]+("+_d+"|)", "g");
  var cns = this.names.match(reg), tcn = this.node[id].childNodes; if (cns){
  reg = new RegExp(_d, "g"); for (var i=0; i<cns.length; i++)
  tcn[tcn.length] = this.nodeInit(cns[i].replace(reg, ""), id); }
  node.isLoad = true;
};
//初始化节点信息, 根据 this.nodes 数据源生成节点的详细信息
//sourceIndex 数据源中的父子节点组合的字符串 0_1
//parentId    当前树节点在客户端的父节点的 id
MzTreeView.prototype.nodeInit = function(sourceIndex, parentId)
{
  this.index++;
  var source= this.nodes[sourceIndex], d = this.divider;
  var text  = this.getAttribute(source, "text");
  var hint  = this.getAttribute(source, "hint");
  var sid   = sourceIndex.substr(sourceIndex.indexOf(d) + d.length);
  this.node[this.index] =
  {
    "id"    : this.index,
    "text"  : text,
    "hint"  : hint ? hint : text,
    "icon"  : this.getAttribute(source, "icon"),
    "path"  : this.node[parentId].path + d + this.index,
    "isLoad": false,
    "isExpand": false,
    "parentId": parentId,
    "parentNode": this.node[parentId],
    "sourceIndex" : sourceIndex,
    "childAppend" : ""
  };
     this.nodes[sourceIndex] = "index:"+ this.index +";"+ source;
     this.node[this.index].hasChild = this.names.indexOf(this._d + sid + d)>-1;
  if(this.node[this.index].hasChild)  this.node[this.index].childNodes = [];
  return this.node[this.index];
};
//从XML格式字符串里提取信息
//source 数据源里的节点信息字符串(以后可以扩展对XML的支持)
//name   要提取的属性名
MzTreeView.prototype.getAttribute = function(source, name)
{
  var reg = new RegExp("(^|;|//s)"+ name +"//s*://s*([^;]*)(//s|;|)", "i");
  if (reg.test(source))
    return RegExp.$2.replace(/[/x0f]/g, ";").replace(//'/g, "&#39;"); return "";
};
//根据节点的详细信息生成HTML
//node   树在客户端的节点对象
//AtEnd  布尔值  当前要转换的这个节点是否为父节点的子节点集中的最后一项
MzTreeView.prototype.nodeToHTML = function(node, AtEnd)
{
  var source = this.nodes[node.sourceIndex];
  var target = this.getAttribute(source, "target");
  var data = this.getAttribute(source, "data");
  var url  = this.getAttribute(source, "url");
  if(!url) url = this.url;
  if(data) url += (url.indexOf("?")==-1?"?":"&") + data;
  if(!target) target = this.target;
  var id   = node.id;
  var HCN  = node.hasChild, isRoot = node.parentId=="0";
  if(isRoot && node.icon=="") node.icon = "root";
  if(node.icon=="" || typeof(this.icons[node.icon])=="undefined")
    node.icon = HCN ? "folder" : "file";
  node.iconExpand  = AtEnd ? "└" : "├";
  var HTML = "<DIV noWrap='True'><NOBR>";
  if(!isRoot)
  {
    node.childAppend = node.parentNode.childAppend + (AtEnd ? "　" : "│");
    if(this.wordLine)
    {
      HTML += "<SPAN>"+ node.parentNode.childAppend + (AtEnd ? "└" : "├") +"</SPAN>";
      if(HCN) HTML += "<SPAN class='pm' id='"+ this.name +"_expand_"+ id +"'>+</SPAN>";
    }
    else
    {
      node.iconExpand  = HCN ? AtEnd ? "PM2" : "PM1" : AtEnd ? "L2" : "L1";
      HTML += "<SPAN>"+ this.word2image(node.parentNode.childAppend) +"<IMG "+
        "align='absmiddle' id='"+ this.name +"_expand_"+ id +"' "+
        "src='"+ this.icons[node.iconExpand].src +"' style="cursor: "+ (!node.hasChild ? "":
        (this.navigator=="msie"||this.navigator=="opera"? "hand" : "pointer")) +"" mce_style="cursor: "+ (!node.hasChild ? "":
        (this.navigator=="msie"||this.navigator=="opera"? "hand" : "pointer")) +""></SPAN>";
    }
  }
  HTML += "<IMG "+
    "align='absMiddle' "+
    "id='"+ this.name +"_icon_"+ id +"' "+
    "src='"+ this.icons[node.icon].src +"'><A "+
    "class='MzTreeview' hideFocus "+
    "id='"+ this.name +"_link_"+ id +"' "+
    "href='"+ url +"' "+
    "target='"+ target +"' "+
    "title='"+ node.hint +"' "+
    "onfocus=/""+ this.name +".focusLink('"+ id +"')/" "+
    "onclick=/"return "+ this.name +".nodeClick('"+ id +"')/">"+ node.text +
  "</A></NOBR></DIV>";
  if(isRoot && node.text=="") HTML = "";
  HTML = "/r/n<SPAN id='"+ this.name +"_tree_"+ id +"'>"+ HTML
  HTML +="<SPAN style="DISPLAY: none" mce_style="DISPLAY: none"></SPAN></SPAN>";
  return HTML;
};
//在使用图片的时候对 node.childAppend 的转换
MzTreeView.prototype.word2image = function(word)
{
  var str = "";
  for(var i=0; i<word.length; i++)
  {
    var img = "";
    switch (word.charAt(i))
    {
      case "│" : img = "L4"; break;
      case "└" : img = "L2"; break;
      case "　" : img = "empty"; break;
      case "├" : img = "L1"; break;
      case "─" : img = "L3"; break;
      case "┌" : img = "L0"; break;
    }
    if(img!="")
      str += "<IMG align='absMiddle' src=""+ this.icons[img].src +"" mce_src="&quot;+ this.icons[img].src +&quot;" height='20'>";
  }
  return str;
}

//将某个节点下的所有子节点转化成详细的<HTML>元素表达
//id 树的客户端节点 id
MzTreeView.prototype.buildNode = function(id)
{
  if(this.node[id].hasChild)
  {
    var tcn = this.node[id].childNodes, str = "";
    for (var i=0; i<tcn.length; i++)
      str += this.nodeToHTML(tcn[i], i==tcn.length-1);
    var temp = this.getElementById(this.name +"_tree_"+ id).childNodes;
    temp[temp.length-1].innerHTML = str;
  }
};
//聚集到客户端生成的某个节点上
//id  客户端树节点的id
MzTreeView.prototype.focusClientNode      = function(id)
{
  if(!this.currentNode) this.currentNode=this.node["0"];
  var a = this.getElementById(this.name +"_link_"+ id); if(a){ a.focus();
  var link = this.getElementById(this.name +"_link_"+ this.currentNode.id);
  if(link)with(link.style){color="";   backgroundColor="";}
  with(a.style){color = this.colors.highLightText;
  backgroundColor = this.colors.highLight;}
  this.currentNode= this.node[id];}
};
//焦点聚集到树里的节点链接时的处理
//id 客户端节点 id
MzTreeView.prototype.focusLink= function(id)
{
  if(this.currentNode && this.currentNode.id==id) return;
  this.focusClientNode(id);
};
//点击展开树节点的对应方法
MzTreeView.prototype.expand   = function(id, sureExpand)
{
  var node  = this.node[id];
  if (sureExpand && node.isExpand) return;
  if (!node.hasChild) return;
  var area  = this.getElementById(this.name +"_tree_"+ id);
  if (area)   area = area.childNodes[area.childNodes.length-1];
  if (area)
  {
    var icon  = this.icons[node.icon];
    var iconE = this.iconsExpand[node.icon];
    var Bool  = node.isExpand = sureExpand || area.style.display == "none";
    var img   = this.getElementById(this.name +"_icon_"+ id);
    if (img)  img.src = !Bool ? icon.src :typeof(iconE)=="undefined" ? icon.src : iconE.src;
    var exp   = this.icons[node.iconExpand];
    var expE  = this.iconsExpand[node.iconExpand];
    var expand= this.getElementById(this.name +"_expand_"+ id);
    if (expand)
    {
      if(this.wordLine) expand.innerHTML = !Bool ? "+"  : "-";
      else expand.src = !Bool ? exp.src : typeof(expE) =="undefined" ? exp.src  : expE.src;
    }
    if(!Bool && this.currentNode.path.indexOf(node.path)==0 && this.currentNode.id!=id)
    {
      try{this.getElementById(this.name +"_link_"+ id).click();}
      catch(e){this.focusClientNode(id);}
    }
    area.style.display = !Bool ? "none" : "block";//(this.navigator=="netscape" ? "block" : "");
    if(!node.isLoad)
    {
      this.load(id);
      if(node.id=="0") return;
      //当子节点过多时, 给用户一个正在加载的提示语句
      if(node.hasChild && node.childNodes.length>5)
      {
        setTimeout(this.name +".buildNode('"+ id +"')", 1);
        var temp = this.getElementById(this.name +"_tree_"+ id).childNodes;
        temp[temp.length-1].innerHTML = "<DIV noWrap><NOBR><SPAN>"+ (this.wordLine ?
        node.childAppend +"└" : this.word2image(node.childAppend +"└")) +"</SPAN>"+
        "<IMG border='0' height='16' align='absmiddle' src=""+this.icons["file"].src+"" mce_src="&quot;+this.icons[&quot;file&quot;].src+&quot;">"+
        "<A style="background-Color: "+ this.colors.highLight +"; color: "+
        this.colors.highLightText +"; font-size: 9pt" mce_style="background-Color: "+ this.colors.highLight +"; color: "+
        this.colors.highLightText +"; font-size: 9pt">请稍候...</A></NOBR></DIV>";
      }
      else this.buildNode(id);
    }
  }
};
//节点链接单击事件处理方法
//id 客户端树节点的 id
MzTreeView.prototype.nodeClick = function(id)
{
  var source = this.nodes[this.node[id].sourceIndex];
  eval(this.getAttribute(source, "method"));
 // alert(this.url);
 var bool=(this.getAttribute(source, "url")=="#" && this.url=="#");
 if(bool&&this.node[id].hasChild)
   this.expand(id);
  return !bool;
 
 //return (!this.getAttribute(source, "url")=="#" && this.url=="#");
};
//为配合系统初始聚集某节点而写的函数, 得到某节点在数据源里的路径
//sourceId 数据源里的节点 id
MzTreeView.prototype.getPath= function(sourceId)
{
  Array.prototype.indexOf = function(item)
  {
    for(var i=0; i<this.length; i++)
    {
      if(this[i]==item) return i;
    }
    return -1;
  };
  var _d = this._d, d = this.divider;
  var A = new Array(), id=sourceId; A[0] = id;
  while(id!="0" && id!="")
  {
    var str = "(^|"+_d+")([^"+_d+d+"]+"+d+ id +")("+_d+"|)";
    if (new RegExp(str).test(this.names))
    {
      id = RegExp.$2.substring(0, RegExp.$2.indexOf(d));
      if(A.indexOf(id)>-1) break;
      A[A.length] = id;
    }
    else break;
  }
  return A.reverse();
};
//在源代码里指定 MzTreeView 初始聚集到某个节点
//sourceId 节点在数据源里的 id
MzTreeView.prototype.focus = function(sourceId, defer)
{
  if (!defer)
  {
    setTimeout(this.name +".focus('"+ sourceId +"', true)", 100);
    return;
  }
  var path = this.getPath(sourceId);
  if(path[0]!=this.rootId)
  {
    alert("节点 "+ sourceId +" 没有正确的挂靠有效树节点上！/r/n"+
      "节点 id 序列 = "+ path.join(this.divider));
    return;
  }
  var root = this.node["0"], len = path.length;
  for(var i=1; i<len; i++)
  {
    if(root.hasChild)
    {
      var sourceIndex= path[i-1] + this.divider + path[i];
      for (var k=0; k<root.childNodes.length; k++)
      {
        if (root.childNodes[k].sourceIndex == sourceIndex)
        {
          root = root.childNodes[k];
          if(i<len - 1) this.expand(root.id, true);
          else this.focusClientNode(root.id);
          break;
        }
      }
    }
  }
};
//树的单击事件处理函数
MzTreeView.prototype.clickHandle = function(e)
{
  e = window.event || e; e = e.srcElement || e.target;
  //alert(e.tagName)
  switch(e.tagName)
  {
    case "IMG" :
      if(e.id)
      {
        if(e.id.indexOf(this.name +"_icon_")==0)
          this.focusClientNode(e.id.substr(e.id.lastIndexOf("_") + 1));
        else if (e.id.indexOf(this.name +"_expand_")==0)
          this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
      }
      break;
    case "A" :
      if(e.id) this.focusClientNode(e.id.substr(e.id.lastIndexOf("_") + 1));
      break;
    case "SPAN" :
      if(e.className=="pm")
        this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
      break;
    default :
      if(this.navigator=="netscape") e = e.parentNode;
      if(e.tagName=="SPAN" && e.className=="pm")
        this.expand(e.id.substr(e.id.lastIndexOf("_") + 1));
      break;
  }
};
//MzTreeView 双击事件的处理函数
MzTreeView.prototype.dblClickHandle = function(e)
{
  e = window.event || e; e = e.srcElement || e.target;
  if((e.tagName=="A" || e.tagName=="IMG")&& e.id)
  {
    var id = e.id.substr(e.id.lastIndexOf("_") + 1);
    if(this.node[id].hasChild) this.expand(id);
  }
};
//回到树当前节点的父层节点
MzTreeView.prototype.upperNode = function()
{
  if(!this.currentNode) return;
  if(this.currentNode.id=="0" || this.currentNode.parentId=="0") return;
  if (this.currentNode.hasChild && this.currentNode.isExpand)
    this.expand(this.currentNode.id, false);
  else this.focusClientNode(this.currentNode.parentId);
};
//展开当前节点并
MzTreeView.prototype.lowerNode = function()
{
  if (!this.currentNode) this.currentNode = this.node["0"];
  if (this.currentNode.hasChild)
  {
    if (this.currentNode.isExpand)
      this.focusClientNode(this.currentNode.childNodes[0].id);
    else this.expand(this.currentNode.id, true);
  }
}
//聚集到树当前节点的上一节点
MzTreeView.prototype.pervNode = function()
{
  if(!this.currentNode) return; var e = this.currentNode;
  if(e.id=="0") return; var a = this.node[e.parentId].childNodes;
  for(var i=0; i<a.length; i++){if(a[i].id==e.id){if(i>0){e=a[i-1];
  while(e.hasChild){this.expand(e.id, true);
  e = e.childNodes[e.childNodes.length - 1];}
  this.focusClientNode(e.id); return;} else {
  this.focusClientNode(e.parentId); return;}}}
};
//聚集到树当前节点的下一节点
MzTreeView.prototype.nextNode = function()
{
  var e = this.currentNode; if(!e) e = this.node["0"];
  if (e.hasChild){this.expand(e.id, true);
  this.focusClientNode(e.childNodes[0].id); return;}
  while(typeof(e.parentId)!="undefined"){
  var a = this.node[e.parentId].childNodes;
  for(var i=0; i<a.length; i++){ if(a[i].id==e.id){
  if(i<a.length-1){this.focusClientNode(a[i+1].id); return;}
  else e = this.node[e.parentId];}}}
};
//展开树的所有节点
MzTreeView.prototype.expandAll = function()
{
  if(this.totalNode>500) if(
    confirm("您是否要停止展开全部节点？/r/n/r/n节点过多！展开很耗时")) return;
  if(this.node["0"].childNodes.length==0) return;
  var e = this.node["0"].childNodes[0];
  var isdo = t = false;
  while(e.id != "0")
  {
    var p = this.node[e.parentId].childNodes, pn = p.length;
    if(p[pn-1].id==e.id && (isdo || !e.hasChild)){e=this.node[e.parentId]; isdo = true;}
    else
    {
      if(e.hasChild && !isdo)
      {
        this.expand(e.id, true), t = false;
        for(var i=0; i<e.childNodes.length; i++)
        {
          if(e.childNodes[i].hasChild){e = e.childNodes[i]; t = true; break;}
        }
        if(!t) isdo = true;
      }
      else
      {
        isdo = false;
        for(var i=0; i<pn; i++)
        {
          if(p[i].id==e.id) {e = p[i+1]; break;}
        }
      }
    }
  }
};
//本树将要用动的图片的字义及预载函数
//path 图片存放的路径名
MzTreeView.prototype.setIconPath  = function(path)
{
  var k = 0, d = new Date().getTime();
  for(var i in this.icons)
  {
    var tmp = this.icons[i];
    this.icons[i] = new Image();
    this.icons[i].src = path + tmp;
    if(k==9 && (new Date().getTime()-d)>20)
      this.wordLine = true; k++;
  }
  for(var i in this.iconsExpand)
  {
    var tmp = this.iconsExpand[i];
    this.iconsExpand[i]=new Image();
    this.iconsExpand[i].src = path + tmp;
  }
};
//设置树的默认链接
//url 默认链接  若不设置, 其初始值为 #
MzTreeView.prototype.setURL     = function(url){this.url = url;};
//设置树的默认的目标框架名 target
//target 目标框架名  若不设置, 其初始值为 _self
MzTreeView.prototype.setTarget  = function(target){this.target = target;};
// -->

以上为属性菜单的源码 !


本文来自优快云博客，转载请标明出处：http://blog.youkuaiyun.com/yefengzhixia/archive/2009/05/22/4208787.aspx

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