使用 object 和数组将对象数组映射到对象数组

Question

我有一个 object

   const response =  {
        "message": "story records found successfully",
        "result": [
            {
                "created_AT": "Thu, 13 Jan 2022 17:37:04 GMT",
                "created_BY": "avinash",
                "dateTime": "Thu, 13 Jan 2022 17:37:04 GMT",
                "deleted_BY": "",
                "flag": 0,
                "project_ID": "infobot1234",
                "stories": {
                    "steps": [
                        {
                            "intent": "test"
                        },
                        {
                            "action": "uttence_test_heading"
                        },
                        {
                            "intent": "fruits"
                        },
                        {
                            "intent": "testintent"
                        },
                        {
                            "action": "utter_txt1234"
                        },
                        {
                            "action": "uttence_test_heading"
                        },
                        {
                            "action": "utter_txt1234"
                        },
                        {
                            "intent": "test"
                        },
                        {
                            "intent": "fruits"
                        },
                        {
                            "action": "uttence_test_heading"
                        },
                        {
                            "intent": "my_localities12333qqqwq"
                        }
                    ],
                    "story": "happy path rdedd"
                },
                "stories_ID": "f5728c4f-3717-40c2-8419-265d5d59bfd1",
                "updated_BY": "",
                "user_ID": "av1234"
            }
        ],
        "status_code": 0
    }

由此我必须创建一个类似的结构，所以我预期的 output 是

const data = [
                  {intent: 'test', actions:['uttence_test_heading']},
                  {intent:'fruits', actions:[]},
                  {intent:"testintent", actions:["utter_txt1234","uttence_test_heading","utter_txt1234"]},
                  {intent:"test", actions:[]},
                  {intent:"fruits", actions:["uttence_test_heading"]},
                  {intent: "my_localities12333qqqwq", actions:[]}
                 ]

我能得到的最接近的是使用response.result[0].stories.steps这给了我结果

[{
  intent: "test"
}, {
  action: "uttence_test_heading"
}, {
  intent: "fruits"
}, {
  intent: "testintent"
}, {
  action: "utter_txt1234"
}, {
  action: "uttence_test_heading"
}, {
  action: "utter_txt1234"
}, {
  intent: "test"
}, {
  intent: "fruits"
}, {
  action: "uttence_test_heading"
}, {
  intent: "my_localities12333qqqwq"
}]

我怎样才能达到我的预期结果我必须使用一些条件或类似Object.keys的东西，然后应用任何条件，因为对于每个意图都有一个动作，如果没有动作，那么它应该是一个空数组。

我怎样才能达到我的预期结果，请指导！

Answer 1

您需要使用reduce数组方法遍历每个数组元素，并检查该元素是否为intent 。 如果是，则将新的 object 推送到结果数组，如果不是，只需使用.at()方法将新元素推送到最后一个索引意图的操作数组：

 const steps = [ {"intent": "test"}, {"action": "uttence_test_heading"}, {"intent": "fruits"}, {"intent": "testintent"}, {"action": "utter_txt1234"}, {"action": "uttence_test_heading"}, {"action": "utter_txt1234"}, {"intent": "test"}, {"intent": "fruits"}, {"action": "uttence_test_heading"}, {"intent": "my_localities12333qqqwq"} ]; const result = steps.reduce((acc, e) => { if (Object.keys(e)[0] === "intent") { acc.push({...e, actions: [] }); }else { acc.at(-1).actions.push(e.action) } return acc; }, []); console.log(result)