js递归调用注意return返回值

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转载：  http://blog.youkuaiyun.com/a1017680279/article/details/72953887 copy

1. 调用：   
2.             //获得公司树结构中的已选中节点  
3.             var selectedNode = $("#resourceTree").tree('getSelected');  
4.             //console.log(selectedNode);  
5.             var rootNode = getTreeRoot(selectedNode);  
6.             console.log('rootNode====')  
7.             console.log(rootNode);  
8.             if(rootNode !=null && rootNode != 'undefined' &&rootNode.text == '金控'){  
9.                 alert('金控');  
10.             }else{  
11.                 alert('非金控');  
12.             }  
13. 递归方法：  
14.         //获得公司结构的节点node对应的最上层节点  
15.         function getTreeRoot(node){  
16.             console.log('getTreeRoot====node');  
17.             console.log(node);  
18.             var parentNode = $("#resourceTree").tree('getParent',node.target);  
19.             console.log('getTreeRoot()=====');  
20.             console.log(parentNode);  
21.             if (parentNode == null){  
22.                 console.log('getTreeRoot()=====null');  
23.                 console.log(node);  
24.                 return node;  
25.             }else{  
26.                 console.log('getTreeRoot====else');  
27.                 //这里需要对递归方法进行return  
28.                 return getTreeRoot(parentNode);  
29.             }  
30.         }  
31. 
    

转载：http://blog.youkuaiyun.com/a1017680279/article/details/72953887