示例物件：
{name: 'a', next: [{name: 'b', next: [{name: 'd', next: []}, {name: 'e', next: []}]}, {name: 'c', next: [{name: 'f', next: []}, {name: 'g', next: []}]}]}

廣度優先遍歷：

function BFS(obj){
    let list = [obj],
        listTemp = [];
    while(list.length != 0){
      for(let i = 0, len = list.length; i < len; ++i){
        console.log(list[i].name);
        listTemp 
 
= [...listTemp, ...list[i].next];
      }
      list = listTemp;
      listTemp = [];
    }
}

深度優先遍歷：

function DFS(obj){
    let p = obj,
        p_p = [],
        n = -1;
    while(p != null){
      if(p.is != true){
        console.log(p.name);
        p.is = true;
      }
      let pTemp = null
 
;
      for(let i = 0, len = p.next.length; i < len; ++i){
        if(p.next[i].is != true){
          p_p[n + 1] = p;
          pTemp = p.next[i];
          ++n;
          break;
        }
      }
      p = pTemp;
      if(p == null){
        p = p_p[n];
        --n;
      }
    }
}