已经基本了解了dojo中tree的使用，现在做一些比较经典的应用。
先截个图，展示一下总体的目标：
大致就是左边是一棵树，右边是一棵树，然后用户可以方便的选择。
好了，现在分步来实现，先是这个框架,代码：
<!DOCTYPE HTML>
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'treeTest.jsp' starting page</title>
<link rel="stylesheet" type="text/css" href="js/dijit/themes/claro/claro.css">
<link rel="stylesheet" type="text/css" href="css/main.css">
</head>
<body class="claro">
<button type="button" id="treeBtn" data-dojo-type="dijit/form/Button">tree测试</button>
<form data-dojo-type="dijit/form/Form">
<div data-dojo-type="dijit/Dialog" class="selectDia" id="selectDia" title="终端划分">
<table>
<tr>
<td>
<fieldset>
<legend>未选中</legend>
<div class="leftTree" id="leftTree"></div>
</fieldset>
</td>
<td>
<button class="toRightBtn" id="toRightBtn" type="button" data-dojo-type="dijit/form/Button">--></button>
<br/>
<br/>
<button class="toLeftBtn" id="toLeftBtn"type="button" data-dojo-type="dijit/form/Button"><--</button>
</td>
<td>
<fieldset>
<legend>已选中</legend>
<div class="rightTree" id="rightTree"></div>
</fieldset>
</td>
</tr>
</table>
<div class="actionBar">
<button type="submit" data-dojo-type="dijit/form/Button">确定</button>
<button type="button" id="cancelBtn" data-dojo-type="dijit/form/Button">取消</button>
</div>
</div>
</form>
<script type="text/javascript" src="js/dojo/dojo.js" data-dojo-config="parSEOnLoad:false"></script>
<script type="text/javascript">
require([
"dojo/parser","dijit/registry","dojo/on","dijit/form/Button","dijit/Tree","dojo/domReady!"
],function(parser,registry,on,Button,Tree){
parser.parse().then(function(){
registry.byId("treeBtn").on("click",function(){
registry.byId("selectDia").show();
});
registry.byId("cancelBtn").on("click",function(){
registry.byId("selectDia").hide();
});
});
});
</script>
</body>
</html>
css代码：
保存为main.css
html,body{
margin:0 0;
padding:0 0;
}
.leftTree{
width:230px;
height:350px;
border:1px solid #d3d3d3;
}
.rightTree{
width:230px;
height:350px;
border:1px solid #d3d3d3;
}
.actionBar{
text-align: right;
background-color: #efefef;
border-top: 1px solid #d3d3d3;
margin: 10px -8px -10px;
padding: 3px 10px 3px 7px;
}
.clear{
clear: both;
}到此，框架已经搭起来了，下面将开始重头戏，cbtree，第三方扩展dojo的tree，使其带有checkBox，这样就方便多了，下回分解。