过滤dojo treegrid

Question

是否可以提交dojo树网格？

假设我的树有以下分层数据

A1
 --- b

 ---c
 ---d

--- e

我需要过滤特定父节点的所有直接子节点并显示它

 eg : if i give criteria as a1 - it should fetch me b and e 
      if i give criteria as b it should fetch c and d