ZTREE DEMO - Hide Ordinary Node

1, Explanation of setting
- Use this freature, you don't need to set any attributes.
2, Explanation of treeNode
- Before you init zTree, set treeNode.isHidden = true, and you can hide the node.
- Hide or show the nodes:
  
  Try: [ Hide the nodes which be selected ]
  [ Show all of the nodes which be hidden ]
  - Total hidden nodes ('isHidden' is true): 个
  - After hide nodes, you can see the 'isFirstNode' and 'isLastNode' attributes on the nodes which still be shown.
3、Other explanation
- Hide nodes will effect the 'isFirstNode' and 'isLastNode' attributes, but will not effect the 'getPreNode()' and 'getNextNode()' method.

Hide Ordinary Node