js树形控件：提供的接口简单易用,特性如下：

1.如果想一次性加载树,需要一次性将底层数据封装成json数据格式,并将JTree.lazyLoad设为false

2.当点击展开节点时,才从底层数据库获取数据时,需要将JTree.lazyLoad设为true,当第二次再点击时,有以下两种选择:

2.1 缓存第一次所点击的,即不再从底层获取数据,直接将第一次获取的数据显示即可.

2.2 不缓存第一次数据,再次从数据库中获取,适用于频繁修改数据的情况下,默认为第一种

3.如果树应用在包含框架的页面中,并且想点击节点时直接在框架内显示内容,则需将JTree.target设为框架的名字(name)即可

4.任一时刻只打开一个节点(包括其父节点),则将onlyOneLevel设为true即可,默认为false

5.useSelectedStyle 是否使用节点选中样式,默认使用

-js tree control: the interface provides ease of use, features are as follows:

1. If you want to load the tree one time, one-time to the underlying data packaged as json data format, and set to false JTree.lazyLoad

2. When you click to start the node, the only access to data from the underlying database, you need to JTree.lazyLoad set to true, when the second time and then clicked, the following two options:

2.1 buffer for the first time by the click, that is no longer obtain from the underlying data directly for the first time can access the data.

2.2 does not cache the first time data access from the database again for the case of frequent changes of data, the default is the first

3. If the tree contains the fr a mework used in the page, and want to click the node directly in the fr a me display, you need to set the fr a mework will JTree.target name (name) can be

4. Any one time only to open a node (including its parent node), will onlyOneLevel can be set to true, default is false

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