SOURCE

var data = [
    {
        "id": 1000,
        "name": "女士",
        "children": [
            {
                "id": 1230,
                "name": "服装",
                "children": [
                    {
                        "id": 2191,
                        "name": "裙",
                        "children": [
                            {
                                "id": 1111,
                                "name": "连衣裙"
                            }
                        ]
                    },
                    {
                        "id": 1120,
                        "name": "针织衫"
                    }
                ]
            },
            {
                "id": 1200,
                "name": "鞋履",
                "children": [
                    {
                        "id": 1210,
                        "name": "高跟鞋"
                    },
                    {
                        "id": 1220,
                        "name": "靴子"
                    }
                ]
            }
        ]
    },
    {
        "id": 2000,
        "name": "男士",
        "children": [
            {
                "id": 2100,
                "name": "服装",
                "children": [
                    {
                        "id": 4110,
                        "name": "上衣",
                        "children": [
                            {
                                "id": 2111,
                                "name": "T恤"
                            },
                            {
                                "id": 2112,
                                "name": "POLO衫"
                            }
                        ]
                    },
                    {
                        "id": 2124,
                        "name": "西装"
                    }
                ]
            },
            {
                "id": 3212,
                "name": "鞋履",
                "children": [
                    {
                        "id": 2210,
                        "name": "平底鞋"
                    },
                    {
                        "id": 2220,
                        "name": "运动鞋",
                        "children": [
                            {
                                "id": 2221,
                                "name": "篮球鞋"
                            }
                        ]
                    }
                ]
            }
        ]
    }
];
var t = 2210
var p = []
var i = 0
var find = false
while(!find){
  var item = get_item()
  if(item.id == t){
    find = true
    break
  }
  alert(item.id)
  break
}

function get_item(){
  var res
  for(var i in p){
    res = data[p[i]]
  }
  console.log(res)
  return res
}
alert(res.join(','))