Question

从另一个数组中的对象数组生成一种格式的对象数组。

给定数组为：

let target =
[[{key: "subscriber_id", value: "1"},
{key: "msisdn_value", value: "2"}],
[{key: "subscriber_id", value: "3"},
{key: "msisdn_value", value: "4"}
]]

预期的对象数组应为：

result = [
  {"subscriber_id":"1","msisdn_value":"2"},
  {"subscriber_id":"3","msisdn_value":"4"},
]

Answer 1

将嵌套的map调用与Object.fromEntries和Object.values一起使用，可获得简洁明了的解决方案，如下所示：

const result = target.map(e => Object.fromEntries(e.map(Object.values)));

或者，为获得更有效的解决方案，请使用reduce：

const result = target.map(e => e.reduce((a, { key, value }) => (a[key] = value, a), {}));

Answer 2

您可以使用地图和解构

let target = [[{key: "subscriber_id",value: "1"},{key: "msisdn_value",value: "2"}],[{key: "subscriber_id",value: "3"},{key: "msisdn_value",value: "4"}]]

let final = target.map(data => {
  let [{key:a,value:b},{key:c,value:d}] = data
  return { [a]:b, [c]:d }
})

console.log(final)

如果内部数组中有两个以上元素，请遍历每个元素

let target = [[{key: "subscriber_id",value: "1"},{key: "msisdn_value",value: "2"}],[{key: "subscriber_id",value: "3"},{key: "msisdn_value",value: "4"},{key: "key",value: "value"}]]

let final = target.map((data) => {
  return data.reduce((obj,{key,value})=>{
    obj[key] = value 
    return obj
  },{})
})

console.log(final)

将另一个数组中的数组对象打印为javascript中的特定格式

2 个答案: