javascript - 从数组javascript更改对象数组中的值

Question

我想知道如何从javascript中的数组更改嵌套数组中的值。 我有一个 obj 和 arr，其中我需要用 javascript 中的 arr 值替换 month 值， 即“12”应该是“Dec”

var arr = ["Jan", "Feb","Mar", "Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]
var obj =[{
  "month": "12",
  "year": "2013"
},
{
  "month": "10",
  "year": "2012"
}]

预期输出:

[{
  "month": "Dec",
  "year": "2013"
},
{
  "month": "Oct",
  "year": "2012"
}]

Answer 1

您可以使用.map()获得所需的输出:

const months = ["Jan", "Feb","Mar", "Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]
const data =[{"month": "12", "year": "2013"}, { "month": "10", "year": "2012"}];

const result = data.map(
  o => ({...o, month: months[o.month - 1]})
);

console.log(result);