如何在javascript中将嵌套对象转换为对象数组？ [关闭]
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【中文标题】如何在javascript中将嵌套对象转换为对象数组？ [关闭]【英文标题】：How to convert nested object to array of object in javascript? [closed] 【发布时间】：2021-12-13 07:58:44 【问题描述】：我有来自服务器的 JSON 响应，“IN01”、“IN02”和“2021”、“2022”这些是动态对象键。我想将此结构转换为其他格式。 javascript怎么办？
"holidayCalendar": [
"IN01": [
"2021": [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"2022": [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
,
"month": "6",
"value": "1111101111110111111011111101111"
]
]
,
"IN02": [
"2021": [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"2022": [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
]
]
]
这里的键可以是任何值，而不是“IN01”、“IN02”等，也可以是“2021”， 《2021》
我想将上面的 JSON 数据转换成下面提到的格式
"holidayCalendar" : [
"location" : "IN01",
"year" : "2021",
"holidays" : [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"location" : "IN01",
"year" : "2022",
"holidays" : [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
,
"month": "6",
"value": "1111101111110111111011111101111"
]
,
"location" : "IN02",
"year" : "2021",
"holidays" : [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"location" : "IN02",
"year" : "2022",
"holidays" : [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
]
]
非常感谢您的帮助。谢谢！
【问题讨论】：
你尝试过什么约会？不要只提供问题陈述并期待解决方案。展示你尝试过的东西，解释你研究过的东西，并展示这项研究如何让你失败。 这里没有日期值。我认为您误解了值：“11101111101”，这只是字符串 阅读 MDN 或任何其他 JS 文档。你会发现很多循环的例子。 “你尝试过什么约会”是指你到目前为止尝试过什么。 这不是 StackOveflow 的工作方式。我们期待you to do research 在仅仅询问代码之前。请拨打tour 并阅读help center 以获取有关如何提出好问题的更多信息 【参考方案1】：您可以使用flatMap、Object.entries轻松实现结果
const obj =
holidayCalendar: [
IN01: [
"2021": [
month: "1",
value: "0101111110111011011111101011110",
,
month: "2",
value: "1111110111111011111101111110",
,
month: "3",
value: "1111110111111011111101111110011",
,
],
,
"2022": [
month: "4",
value: "0011111101111110111111011011101",
,
month: "5",
value: "1111101111110111111011111101",
,
month: "6",
value: "1111101111110111111011111101111",
,
],
,
],
,
IN02: [
"2021": [
month: "1",
value: "0101111110111011011111101011110",
,
month: "2",
value: "1111110111111011111101111110",
,
month: "3",
value: "1111110111111011111101111110011",
,
],
,
"2022": [
month: "4",
value: "0011111101111110111111011011101",
,
month: "5",
value: "1111101111110111111011111101",
,
],
,
],
,
],
;
const result =
...obj,
holidayCalendar: obj.holidayCalendar.flatMap((obj) =>
Object.entries(obj).flatMap(([location, v]) =>
v.flatMap((o) =>
Object.entries(o).map(([year, holidays]) => (
location,
year,
holidays,
))
)
)
),
;
console.log(result);/* This is not a part of answer. It is just to give the output full height. So IGNORE IT */
.as-console-wrapper max-height: 100% !important; top: 0; 如果你想使用days 而不是value，那么你可以这样做：
const obj =
holidayCalendar: [
IN01: [
"2021": [
month: "1",
value: "0101111110111011011111101011110",
,
month: "2",
value: "1111110111111011111101111110",
,
month: "3",
value: "1111110111111011111101111110011",
,
],
,
"2022": [
month: "4",
value: "0011111101111110111111011011101",
,
month: "5",
value: "1111101111110111111011111101",
,
month: "6",
value: "1111101111110111111011111101111",
,
],
,
],
,
IN02: [
"2021": [
month: "1",
value: "0101111110111011011111101011110",
,
month: "2",
value: "1111110111111011111101111110",
,
month: "3",
value: "1111110111111011111101111110011",
,
],
,
"2022": [
month: "4",
value: "0011111101111110111111011011101",
,
month: "5",
value: "1111101111110111111011111101",
,
],
,
],
,
],
;
const result =
...obj,
holidayCalendar: obj.holidayCalendar.flatMap((obj) =>
Object.entries(obj).flatMap(([location, v]) =>
v.flatMap((o) =>
Object.entries(o).map(([year, holidays]) => (
location,
year,
holidays: holidays.map(( value, ...rest ) => (
...rest,
days: value,
)),
))
)
)
),
;
console.log(result);/* This is not a part of answer. It is just to give the output full height. So IGNORE IT */
.as-console-wrapper max-height: 100% !important; top: 0; 【讨论】：
我觉得有一个小的改进结果，我想使用“days”而不是“value”键 @SoorajJose 代码已编辑，看看【参考方案2】：使用Object.keys 获取对象的所有键。使用示例
var json = document.getElementById("json").value;
var jsonObject = JSON.parse(json);
jsonObject.holidayCalendar.forEach(function(x)
Object.keys(x).forEach(function(key)
console.log(key, x[key]);
);
)<textarea id="json">
"holidayCalendar": [
"IN01": [
"2021": [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"2022": [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
,
"month": "6",
"value": "1111101111110111111011111101111"
]
]
,
"IN02": [
"2021": [
"month": "1",
"value": "0101111110111011011111101011110"
,
"month": "2",
"value": "1111110111111011111101111110"
,
"month": "3",
"value": "1111110111111011111101111110011"
]
,
"2022": [
"month": "4",
"value": "0011111101111110111111011011101"
,
"month": "5",
"value": "1111101111110111111011111101"
]
]
]
</textarea>【讨论】：
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