easyui属性问题，attributes是什么意思啊，请大家看一下我的图片

attributes 是什么意思啊？ 他是jquery里的，还是easyui特有的属性？

tree组件节点的附加属性

Many events callback function can take the 'node' parameter, which contains following properties:

id: An identity value bind to the node.
text: Text to be showed.
iconCls: The css class to display icon.
checked: Whether the node is checked.
state: The node state, 'open' or 'closed'.
attributes: Custom attributes bind to the node.
target: Target DOM object.