使用eles.breadthFirstSearch（）在它遍历的节点上执行操作

Question

是否可以使用eles.breadthFirstSearch（）对其遍历的节点执行操作？
来自文档：

eles.breadthFirstSearch( [function(i, depth)] [, directed] )
function(i, depth) A handler function that is called when a node is visited in the search.
– i The index indicating this node is the ith visited node.
– depth How many edge hops away this node is from the root nodes.
directed A boolean indicating whether the search should only go along edges from source to target (default true).

看起来回调函数只给出了索引和深度。

如果这不是正确的功能，是否有另一种更好的功能？

谢谢！

Answer 1

“this”环境变量包含当前节点