[英]How to merge different JSON objects using JavaScript?
如何使用 JavaScript 合並這些 JSON 對象?
如果缺少一個鍵,則將 null 放在值的位置
轉換自:
[{"dateData": "2019-04-08", "geriatricDepressionScaleTotalScoreData": "5"},
{"dateData": "2019-04-09", "geriatricDepressionScaleTotalScoreData": "2"}]
[{"dateData": "2019-04-08", "digitSpanTotalScoreData": "10"},
{"dateData": "2019-04-09", "digitSpanTotalScoreData": "12"}]
[{"dateData": "2019-04-09", "immediateRecallStoryAData": "4",
"delayedRecallStoryAData": "6"}]
[{"dateData": "2019-04-08", "phonologicalTotalData": "30"},
{"dateData": "2019-04-09", "phonologicalTotalData": "4"}]
轉換成:
[{"dateData": "2019-04-08", "geriatricDepressionScaleTotalScoreData": "5",
"digitSpanTotalScoreData": "10", "immediateRecallStoryAData": null,
"delayedRecallStoryAData": null, "phonologicalTotalData": "30"},
{"dateData": "2019-04-09", "geriatricDepressionScaleTotalScoreData": "2",
"digitSpanTotalScoreData": "12", "immediateRecallStoryAData": 4,
"delayedRecallStoryAData": 6, "phonologicalTotalData": "4"}]
您可以使用擴展運算符來做到這一點
var myArr = [{ "dateData": "2019-04-08", "geriatricDepressionScaleTotalScoreData": "5" }, { "dateData": "2019-04-09", "geriatricDepressionScaleTotalScoreData": "2" }];
myArr.push(...[{ "dateData": "2019-04-08", "digitSpanTotalScoreData": "10" }, { "dateData": "2019-04-09", "digitSpanTotalScoreData": "12" }]);
myArr.push(...[{ "dateData": "2019-04-09", "immediateRecallStoryAData": "4", "delayedRecallStoryAData": "6" }]);
myArr.push(...[{ "dateData": "2019-04-08", "phonologicalTotalData": "30" }, { "dateData": "2019-04-09", "phonologicalTotalData": "4" }]);
var final = JSON.stringify(myArr);
console.log(final);
您可以使用 Array .map()
函數將現有對象數組重新格式化為具有新重新格式化對象的新數組。
const arr = [{"dateData": "2019-04-08", "geriatricDepressionScaleTotalScoreData": "5"},
{"dateData": "2019-04-09", "geriatricDepressionScaleTotalScoreData": "2"}];
const result = arr.map((el) => {
const obj = {};
obj['dateData'] = el.hasOwnProperty('dateData')?el['dateData'] :null;
obj['geriatricDepressionScaleTotalScoreData'] = el.hasOwnProperty('geriatricDepressionScaleTotalScoreData')?el['geriatricDepressionScaleTotalScoreData'] :null;
obj['digitSpanTotalScoreData'] = el.hasOwnProperty('digitSpanTotalScoreData')?el['digitSpanTotalScoreData'] :null;
obj['immediateRecallStoryAData'] = el.hasOwnProperty('immediateRecallStoryAData')?el['immediateRecallStoryAData'] :null;
obj['delayedRecallStoryAData'] = el.hasOwnProperty('delayedRecallStoryAData')?el['delayedRecallStoryAData'] :null;
obj['phonologicalTotalData'] = el.hasOwnProperty('phonologicalTotalData')?el['phonologicalTotalData'] :null;
return obj;
});
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