合并复杂的多维数组
在Javascript中，我创建了一个多维数组，但出于另一个目的，我需要对其进行转换。
所以我的数组是这样的
array [
0 => {
"ulStatic": [
0 => {
"day": "2019-03-30 18:30:00"
"id": "7"
"origin": "intentions"
}
]
"ulDynamic": [
0 => {
"day": "2019-03-30 18:30:00"
"id": "275"
"origin": "obs"
}
]
"ulCreatedDynamic": []
}
1 => {
"ulStatic": [
0 => {
"day": "2019-03-31 09:30:00"
"id": "8"
"origin": "intentions"
}
]
"ulDynamic": []
"ulCreatedDynamic": []
}
2 => {
"ulStatic": []
"ulDynamic": []
"ulCreatedDynamic": [
0 => {
"day": "2019-04-03 19:30:00"
"id": "277"
"origin": "obs"
}
]
}
]
我正在尝试使用此数组：
array [
0 => {
"day": "2019-03-30 18:30:00"
"elements": [
0 => {
"id": "7"
"origin": "intentions"
}
1 => {
"id": "275"
"origin": "obs"
}
]
}
1 => {
"day": "2019-03-31 09:30:00"
"elements": [
0 => {
"id": "8"
"origin": "intentions"
}
]
}
2 => {
"day": "2019-04-03 19:30:00"
"elements": [
0 => {
"id": "277"
"origin": "obs"
}
]
}
]
我必须承认，我不知道从哪里开始。我在寻找map（），splice（），concat（），但这对我来说很混乱。您能帮我提出一些建议以实现这一目标吗？
Helenr3回答
-
当年话下
day用reduce和对输入进行分组，并返回对象值。const inputAry = [{ "ulStatic": [{ "day": "2019-03-30 18:30:00", "id": "7", "origin": "intentions" }], "ulDynamic": [{ "day": "2019-03-30 18:30:00", "id": "275", "origin": "obs" }], "ulCreatedDynamic": [] }, { "ulStatic": [{ "day": "2019-03-31 09:30:00", "id": "8", "origin": "intentions", }], "ulDynamic": [], "ulCreatedDynamic": [] }, { "ulStatic": [], "ulDynamic": [], "ulCreatedDynamic": [{ "day": "2019-04-03 19:30:00", "id": "277", "origin": "obs" }] }];const groupByDay = inputAry.reduce((group, statics) => { // flattens the statics array [].concat.apply([], Object.values(statics)) .forEach(({ day, id, origin }) => { // creates a dictionary entry with day as key, if already exist use the existing one or creates a new entry group[day] = group[day] || { day, elements: [] }; // push the id and origin to elements group[day].elements.push({ id, origin }); }); return group;}, {});const expectedResult = Object.values(groupByDay);console.log(expectedResult);
随时随地看视频慕课网APP
相关分类
JavaScript