首頁猿問如何將特定對象值推送到數組中

如何將特定對象值推送到數組中

JavaScript

狐的傳說 2021-11-18 17:18:40

我有帶鍵的對象，我只想向數組添加特定值。例如給定的鑰匙[3248647, 32486481]{ "32486479": { "id": "32486479", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }, "32486480": { "id": "32486480", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }, "32486481": { "id": "32486481", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 },預期結果應該是[{ "id": "3248647", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416,},{ "id": "32486481", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }]

查看完整描述

3 回答

FFIVE

TA貢獻1797條經驗獲得超6個贊

keys.map(k => obj[k])

const keys = [32486479, 32486481];

const obj = { "32486479": { "id": "32486479", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }, "32486480": { "id": "32486480", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }, "32486481": { "id": "32486481", "lat": 33, "lng": 73, "accuracy": 51, "updated_at": 1570908416 }};

console.log(keys.map(k => obj[k]))

反對回復 2021-11-18

隔江千里

TA貢獻1906條經驗獲得超10個贊

您可以使用 Array.map方法執行此操作：

const ids = [32486479, 32486481]

const data = {

"32486479": {

"id": "32486479",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

"32486480": {

"id": "32486480",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

"32486481": {

"id": "32486481",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

}

const expectedResult = [{

"id": "32486479",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416,

},{

"id": "32486481",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

}]

const actualResult = ids

// loop on the ids array and use them to access object inside data

.map(id => data[String(id)])

// filter falsy value

.filter(Boolean);

console.log(actualResult);

反對回復 2021-11-18

神不在的星期二

TA貢獻1963條經驗獲得超6個贊

您可以使用 Array.map方法執行此操作：

const ids = [32486479, 32486481]

const data = {

"32486479": {

"id": "32486479",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

"32486480": {

"id": "32486480",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

"32486481": {

"id": "32486481",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

}

const expectedResult = [{

"id": "32486479",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416,

},{

"id": "32486481",

"lat": 33,

"lng": 73,

"accuracy": 51,

"updated_at": 1570908416

}]

const actualResult = ids

// loop on the ids array and use them to access object inside data

.map(id => data[String(id)])

// filter falsy value

.filter(Boolean);

console.log(actualResult);

反對回復 2021-11-18

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如何將特定對象值推送到數組中

如何將特定對象值推送到數組中

3 回答

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