未捕获的TypeError：无法设置未定义的ajax get请求的属性“1”

Question

我一直没有被捕获TypeError：无法为以下行设置未定义的属性“1”：

data.rows[j].experiment[experimentNo] = {
  "experimentName": {
    "goal": goal_entry,
    "strategy": strategy_entry,
    "experiment_name": experiment_name,
    "hypothesis": hypothesis_entry,
    "audience": audience_entry,
    "kpi": kpi_entry,
    "pages": pages_entry,
    "experiment_link": expt_link_entry,
    "status": status_entry,
    "test_brief_link": test_brief_entry
  }
}

我对此很新，并且我尝试根据其他帖子进行更改，例如先设置一个空数组，但似乎没有任何效果。请注意，我实际上是在尝试获取数据并对其进行操作以生成所需的输出。请参阅以下内容，了解其所属的整个ajax请求：

$.ajax({
  type: "GET",
  url: "url",
  dataType: 'json',
  success: function(data) {
    var teams = Object.keys(data.rows).length;
    for (j = 0; j < teams; j++) {
      var teamid = data.rows[j].id;
      if (entryid == teamid) {
        var experimentNo = Object.keys(data.rows[j].doc.experiment).length;
        var experimentList = data.rows[j].doc.experiment;
        data.rows[j].experiment[experimentNo] = {
          "experimentName": {
            "goal": goal_entry,
            "strategy": strategy_entry,
            "experiment_name": experiment_name,
            "hypothesis": hypothesis_entry,
            "audience": audience_entry,
            "kpi": kpi_entry,
            "pages": pages_entry,
            "experiment_link": expt_link_entry,
            "status": status_entry,
            "test_brief_link": test_brief_entry
          }
        }
      }
    }
  }
});

json输出示例：

{
"total_rows": 4,
"offset": 0,
"rows": [
{
  "id": "218db2ac87c373d8b015e1f3d0f37a1c",
  "key": "218db2ac87c373d8b015e1f3d0f37a1c",
  "value": {
    "rev": "2-453783d12591c400ff0283a1bc6755ae"
  },
  "doc": {
    "_id": "218db2ac87c373d8b015e1f3d0f37a1c",
    "_rev": "2-453783d12591c400ff0283a1bc6755ae",
    "business_unit": "china",
    "team_name": "china2",
    "team_number": "china2",
    "experiment": {
      "experimentname1": {
        "goal": "goal1",
        "strategy": "strategy1",
        "exptname": "exptname1",
        "hypothesis": "hypothesis1",
        "audience": "audience1",
        "kpi": "kpi",
        "pages": "pages1",
        "exptlink": "exptlink1",
        "status": "status1",
        "testbrief": "testbrief1"
      }
    }
  }
},
{
  "id": "4683dd4fa0446efc3ed7dd24a94aabc8",
  "key": "4683dd4fa0446efc3ed7dd24a94aabc8",
  "value": {
    "rev": "1-57471567a501230e5405b0e518dc6cf0"
  },
  "doc": {
    "_id": "4683dd4fa0446efc3ed7dd24a94aabc8",
    "_rev": "1-57471567a501230e5405b0e518dc6cf0",
    "business_unit": "cloud",
    "team_name": "clou2",
    "team_number": "clou2",
    "experiments": ""
  }
},
{
  "id": "77f6455bbb80db982d1a2c3604cfbe90",
  "key": "77f6455bbb80db982d1a2c3604cfbe90",
  "value": {
    "rev": "1-5e1cdb086f97c13175d8bb8a4a569dc3"
  },
  "doc": {
    "_id": "77f6455bbb80db982d1a2c3604cfbe90",
    "_rev": "1-5e1cdb086f97c13175d8bb8a4a569dc3",
    "business_unit": "bluemix",
    "team_name": "Bluemix1",
    "team_number": "Bluemix1",
    "experiments": ""
  }
},
{
  "id": "9382855b57442ab3e054a4a366fa6cfd",
  "key": "9382855b57442ab3e054a4a366fa6cfd",
  "value": {
    "rev": "1-223523bc661e179d94ae63dbeda55cf5"
  },
  "doc": {
    "_id": "9382855b57442ab3e054a4a366fa6cfd",
    "_rev": "1-223523bc661e179d94ae63dbeda55cf5",
    "business_unit": "china",
    "team_name": "china1",
    "team_number": "china1",
    "experiments": ""
  }
}

] } 谢谢！