javascript树型菜单(Dtree和Xtree)

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xml 代码

树型菜单是我们在开发中经常用到的数据组合和显示方式,
dTree(http://www.destroydrop.com/javascripts/tree/)
dTree是一种免费的javascript树型菜单, 它支持ie5+, ns 6+, Opera 7+以及Mozilla浏览器
使用简单:
引入树, 在head中加入dtree.js和dtree.css(注意要把js,css和img放到相应目录), 如下所示:
<link rel="StyleSheet" href="dtree.css" type="text/css" />
<script type="text/javascript" src="dtree.js"></script>
实例化树并显示
<div class="dtree">

    <p><a href="javascript: d.openAll();">open all</a> | <a href="javascript: d.closeAll();">close all</a></p>

    <script type="text/javascript">
        <!--

        d = new dTree('d');

        d.add(0,-1,'My example tree');
        d.add(1,0,'Node 1','example01.html');
        d.add(2,0,'Node 2','example01.html');
        d.add(3,1,'Node 1.1','example01.html');
        d.add(4,0,'Node 3','example01.html');
        d.add(5,3,'Node 1.1.1','example01.html');
        d.add(6,5,'Node 1.1.1.1','example01.html');
        d.add(7,0,'Node 4','example01.html');
        d.add(8,1,'Node 1.2','example01.html');
        d.add(9,0,'My Pictures','example01.html','Pictures I\'ve taken over the years','','','img/imgfolder.gif');
        d.add(10,9,'The trip to Iceland','example01.html','Pictures of Gullfoss and Geysir');
        d.add(11,9,'Mom\'s birthday','example01.html');
        d.add(12,0,'Recycle Bin','example01.html','','','img/trash.gif');
        d.add(13,12,'sub Recycle Bin','','','','img/trash.gif');

        document.write(d);

        //-->
    </script>

</div>
add方法的参数说明 id:当前节点标识, pid:父节点标识, name:当前节点名字, url:当菜单被点击时响应的超链接, title:提示语,
target:在目标窗口打开链接, icon:关闭时的显示图标, iconOpen:打开时的显示图标, open:默认的打开状态, true打开, false关闭(不过它会读cookie, 所以有时看不出效果)
dTree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open)

Xtree(http://webfx.eae.net/dhtml/xtree/implementation.html)
相对dTree来说, xTree功能要多一些, 能动态增减树的节点
引入树:
<!-- The xtree script file -->
<script src="xtree.js"></script>
<link type="text/css" rel="stylesheet" href="xtree.css">
实例化树, 并显示
<div style="position: absolute; width: 200px; top: 0px; left: 0px; height: 100%; padding: 5px; overflow: auto;">

<!-- js file containing the tree content, edit this file to alter the menu,
     the menu will be inserted where this tag is located in the document -->
<script>
if (document.getElementById) {
    var tree = new WebFXTree('Root');
    tree.setBehavior('classic');
    var a = new WebFXTreeItem('1');
    tree.add(a);
    var b = new WebFXTreeItem('1.1');
    a.add(b);
    b.add(new WebFXTreeItem('1.1.1'));
    b.add(new WebFXTreeItem('1.1.2'));
    b.add(new WebFXTreeItem('1.1.3'));
    var f = new WebFXTreeItem('1.1.4');
    b.add(f);
    f.add(new WebFXTreeItem('1.1.4.1'));
    f.add(new WebFXTreeItem('1.1.4.2'));
    f.add(new WebFXTreeItem('1.1.4.3'));
    var c = new WebFXTreeItem('1.2');
    a.add(c);
    c.add(new WebFXTreeItem('1.5.1'));
    c.add(new WebFXTreeItem('1.5.2'));
    c.add(new WebFXTreeItem('1.5.3'));
    a.add(new WebFXTreeItem('1.3'));
    a.add(new WebFXTreeItem('1.4'));
    a.add(new WebFXTreeItem('1.5'));
    var d = new WebFXTreeItem('2');
    tree.add(d);
    var e = new WebFXTreeItem('2.1');
    d.add(e);
    e.add(new WebFXTreeItem('2.1.1'));
    e.add(new WebFXTreeItem('2.1.2'));
    e.add(new WebFXTreeItem('2.1.3'));
    d.add(new WebFXTreeItem('2.2'));
    d.add(new WebFXTreeItem('2.3'));
    d.add(new WebFXTreeItem('2.4'));
    document.write(tree);
}

function addNode() {
    if (tree.getSelected()) {
        tree.getSelected().add(new WebFXTreeItem('New'));
    }
}

function addNodes() {
    if (tree.getSelected()) {
        var foo = tree.getSelected().add(new WebFXTreeItem('New'));
        var bar = foo.add(new WebFXTreeItem('Sub 1'));
        var fbr = foo.add(new WebFXTreeItem('Sub 2'));
    }
}

function delNode() {
    if (tree.getSelected()) {
        tree.getSelected().remove();
    }
}
</script>

</div>

打开关闭节点:tree.toggle()
打开节点:tree.expand();
关闭节点:tree.collapse();
打开所有节点:tree.expandAll();
关闭所有节点:tree.collapseAll();
打开子节点:tree.expandChildren();
关闭子节点:tree.collapseChildren();
显示当前节点的id:if (tree.getSelected()) { alert(tree.getSelected().id); }
增加节点:addNode()
增加多个节点:addNodes()
删除节点:delNode()