jQuery EasyUI API Chinese Documentation - Introduction to Tree Use_jquery

Overridden defaults with $.fn.tree.defaults.

Dependencies

draggable
droppable
Usage

Tree can be defined in the

element. This tag can be defined as leaf nodes and child nodes. Here is an example:


Copy code The code is as follows:


• 
  Folder
  
  
  
  • 
    Sub Folder 1< /span>
    
    
    
    • 
      File 11
      < /li>
      
    • 
      File 12
      
    
    
    • 
      File 13
    
    
    
    
  
  
  • 
    File 2
    < /li>
    
  • 
    File 3
    
  
  
  
  


• 
  File21
  





Tree can also be in an empty< ul> defined in the element.



Copy code The code is as follows:

$('#tt').tree({
url:'tree_data.json'
});


Tree data format )
Each node can contain the following characteristics:
id: The id of the node, which is important for loading remote data.
text: The displayed node text.
state: node status, 'open' or 'closed', the default is 'open'. When set to 'closed', this node has child nodes and they will be loaded from the remote site.
checked: Indicates whether the node is selected. Indicate whether the node is checked selected.
attributes: Custom attributes appended to a node.
children: A node array that defines some child nodes.
Example:

Copy code The code is as follows:

[{
"id ":1,
"text":"Folder1",
"iconCls":"icon-save",
"children":[{
"text":"File1",
"checked":true
},{
"text":"Books",
"state":"open",
"attributes":{
"url":" /demo/book/abc",
"price":100
},
"children":[{
"text":"PhotoShop",
"checked":true
},{
"id": 8,
"text":"Sub Bookds",
"state":"closed"
}]
}]
} ,{
"text":"Languages",
"state":"closed",
"children":[{
"text":"Java"
},{
"text":"C#"
}]
}]




特性

名称	类型	说明	默认值
url	string	获取远程数据的 URL 。	null
method	string	获取数据的 http method 。	post
animate	boolean	定义当节点展开折叠时是否显示动画效果。	false
checkbox	boolean	定义是否在每个节点前边显示 checkbox 。	false
cascadeCheck	boolean	定义是否级联检查。	true
onlyLeafCheck	boolean	定义是否只在叶节点前显示 checkbox 。	false
dnd	boolean	定义是否启用拖放。	false
data	array	加载的节点数据。	null

事件

很多事件的回调函数需要 'node' 函数，它包含下列特性：

• id: The identification value bound to the node.

• text: Displayed text.

• checked: Whether the node is selected.

• attributes: Custom attributes bound to the node.

• target: The target's DOM object.

名称	参数	说明
onClick	node	当用户点击一个节点时触发， node 参数包含下列特性： id：节点的 id text：节点的文字 checked：节点是否被选中 attributes：节点自定义属性 target：被点击目标的 DOM 对象
onDblClick	node	当用户双击一个节点时触发。
onBeforeLoad	node, param	当加载数据的请求发出前触发，返回 false 就取消加载动作。
onLoadSuccess	node, data	当数据加载成功时触发。
onLoadError	arguments	当数据加载失败时触发， arguments 参数与 jQuery.ajax 的'error' 函数一样。.
onBeforeExpand	node	节点展开前触发，返回 false 就取消展开动作。
onExpand	node	当节点展开时触发。
onBeforeCollapse	node	节点折叠前触发，返回 false 就取消折叠动作。
onCollapse	node	Fires when a node is collapsed.
onCheck	node, checked