function toTreeData(data) {

        var pos = {};

        var tree = [];

        var i = 0;

        while (data.length != 0) {

            if (data[i].pid == 0) {

                tree.push({

                    id: data[i].id,

                    text: data[i].text,

                    children: []

                });

                pos[data[i].id] = [tree.length - 1];

                data.splice(i, 1);

                i--;

            } else {

                var posArr = pos[data[i].pid];

                if (posArr != undefined) {

                    var obj = tree[posArr[0]];

                    for (var j = 1; j < posArr.length; j++) {

                        obj = obj.children[posArr[j]];

                    }

                    obj.children.push({

                        id: data[i].id,

                        text: data[i].text,

                        children: []

                    });

                    pos[data[i].id] = posArr.concat([obj.children.length - 1]);

                    data.splice(i, 1);

                    i--;

                }

            }

            i++;

            if (i > data.length - 1) {

                i = 0;

            }

        }

        return tree;

    }

 var data = [

  {

      "id": "CU201407140001",

      "pid": "0",

      "text": "壳牌中国"

  },

  {

      "id": "CU201407140002",

      "pid": "CU201407140001",

      "text": "壳牌北京分公司"

  },

  {

      "id": "CU201407140003",

      "pid": "CU201407140001",

      "text": "壳牌上海分公司"

  },

  {

      "id": "CU201407140004",

      "pid": "CU201407140001",

      "text": "壳牌广州分公司"

  },

  {

      "id": "CU201407140005",

      "pid": "CU201407140001",

      "text": "壳牌深圳分公司"

  },

  {

      "id": "CU201407140006",

      "pid": "CU201407140001",

      "text": "壳牌武汉分公司"

  },

  {

      "id": "CU201407140007",

      "pid": "CU201407140001",

      "text": "壳牌成都分公司"

  },

  {

      "id": "CU201407140008",

      "pid": "CU201407140001",

      "text": "壳牌海南分公司"

  }

    ];

    $(function () {

        $.ajax({

            url:hostAddress+'/api/Customer/GetCustomerName?customerid=CU201407140001',

            type:'GET',

            contentType:'application/json',

            beforeSend: function (request) {

                request.setRequestHeader('Authorization',token_type+access_token);

            },

            success:function(data){

                var tree = toTreeData(data);

                var orag="";

                $.each(tree, function (key, value) {

                    $('#list').empty();

                    orag += " <li><span>" + value.text + "</span>";

                     if (value.children!=null)

                     {

                         $.each(value.children, function (k, v) {

                             orag += "<ul> <li><span>" + v.text + "</span></li>";

                             if (v.children!=null)

                             {

                                 $.each(v.children, function (kk, vv) {

                                     orag += "<ul> <li><span>" + vv.text + "</span></li>";

                                 });

                                 orag += "</ul>";

                             }

                         });

                         orag += "</ul>";

                     }

                     orag += "</li>";

                     console.log(orag);

                    $("#list").html(orag);

                })

            }

        });

    })

   function fn(data, pid) {

        var result = [], temp;

        for (var i in data) {

            if (data[i].pid == pid) {

                result.push(data[i]);

                temp = fn(data, data[i].id);

                if (temp.length > 0) {

                    data[i].children = temp;

                }

            }

        }

        return result;

    }