数据处理

1、问题描述：

  将当前数组中的(`name: '/'`)删除掉，并将当前children中的数组合并到父数组去。

2、数据格式：

var data = [{
  name: "A",
  children: [{
    name: "1",
    children: [{
        name: "01",
        children: [{
            name: "001",
            children: []
        }]
    }]
  }, {
    name: "2",
    pid: 1,
    children: [{
        name: "/",
        pid: 2,
        children: [{
            name: "002",
            pid: 3,
            children: [{
                name: "0002",
                pid: 4,
                children: [{
                    name: "/",
                    pid: 5,
                    children: [{
                            name: "000002",
                            pid: 6,
                            children: []
                        }
  
                    ]
                }]
  
            }]
        }]
    }]
}, {
    name: "/",
    pid: 1,
    children: [{
        name: "/",
        pid: 2,
        children: [{
            name: "/",
            pid: 3,
            children: [{
                name: "0003",
                pid: 4,
                children: []
            },{
                  name: "0003",
                  pid: 4,
                  children: []
            }]
        }]
    }]
  }]
}]

3、处理：通过递归方式，深度查找

function filter(old) {
  let arr = [];
  old && old.forEach((item, index)=> {
    if(item.name === '/') {
      arr.push(...filter(item.children))
    } else {
      item.children = filter(item.children)
      arr.push(item);
    }

  })
  return arr;
}
console.log(filter(data))

4、结果：