日期:2014-05-16  浏览次数:20406 次

ExtJs4.2 treepicker下拉树效果

借鉴两位朋友的代码,做的测试,一共2版,效果如下,版本差异代码在treepicker.js中有注释

 在extjs4.2 \examples\ux路径下,找到TreePicker.js文件,修改版代码下载地址: http://download.csdn.net/detail/matengyu036912/6619699。

第一版:默认,包含根节点显示

第二版:隐藏根节点

源代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>ExtJs 下拉树测试</title>
<link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />
<script type="text/javascript" src="../../bootstrap.js"></script>
<script type="text/javascript" src="../../TreePicker.js"></script>
<script type="application/javascript">
Ext.onReady(function(){
	Ext.create("Ext.form.Panel", {
		title: '下拉树菜单',
		margin:'50 0 0 300',
		height: 500,
	    width: 700,
		items:[{
			xtype: 'treepicker',
			//fieldLabel: '下拉树',
			width: 400,
			labelWidth: 60,
			margin: '100 0 0 150',
			displayField: 'text',
			value: '',
			minPickerHeight: 200,
			store: Ext.create('Ext.data.TreeStore',{
				fields: ['id','text'],
				root: {
					text: '天朝部门',
					expanded: true
				},
				proxy: {
					type: 'ajax',
					url: 'tree.json',
					reader: {
						type: 'json'
					}
				}
			})
		}],
		renderTo: Ext.getBody()
	});
});
</script>
</head>
<body>

</body>
</html>

JSON代码

[
{"id":1,"text":"贪污腐败部","children":[{"id":11,"text":"百亿巨头部","leaf":true},{"id":12,"text":"千万乡政部","leaf":true}],"expanded":true},
{"id":2,"text":"嫖娼情妇部","leaf":true},
{"id":3,"text":"城管威武部","leaf":true}
]