easy tree 用于操作树数据结构的简单Node.js库

易树这个简单的Node.js模块提供了一种操作树数据结构的简单方法。用法需要模块并创建一个Tree对象： var Tree = require ( 'easy-tree' ) ; // Create an empty tree var tree = new Tree ( ) ; // Create a tree from an arbitrary data object var tree = new Tree ( { a : 1 , b : 2 } ) ; // Create a tree with several children from an array var tree = new Tree ( [ { a : 1 } , { b : 2 } ] ) ; // Create a multi-level tree using the `