javascript - 嵌套数组中的 Lodash 映射值

Question

我有这种数据，我们通常从api获取，这是我第一次使用lodash。

{
  "_id": "93866",
  "stats": [
    {
      "points": 86,
      "pos": 11,
      "createdAt": "2019-01-16T10:13:40.650Z",
      "updatedAt": "2019-01-16T10:13:40.825Z"
    },
    {
      "points": 79,
      "pos": 26,
      "createdAt": "2019-01-16T10:13:40.650Z",
      "updatedAt": "2019-01-16T10:13:40.825Z"
    },
    {
      "points": 64,
      "pos": 39,
      "createdAt": "2019-01-16T10:13:40.650Z",
      "updatedAt": "2019-01-16T10:13:40.825Z"
    }
  ]
}

我想要的就是实现这样的目标

[ [ 86, 11 ], [ 79, 26 ], [ 64, 39 ] ]

我可以简单地以 native 方式执行此操作，

var result = data.stats.map(o => [o.points, o.pos])
// => [ [ 86, 11 ], [ 79, 26 ], [ 64, 39 ] ]

这会产生预期的结果，但我正在工作的环境取决于 lodash 的使用。

到目前为止我已经尝试过 _.map(data.stats, 'points') 但我不确定如何实现这样的 [ [ 86, 11 ], [ 79, 26], [ 64, 39]]

那么该怎么做呢？

Answer 1

您可以在函数回调中使用object#destructring。

let data = {"_id":"93866","stats":[{"points":86,"pos":11,"createdAt":"2019-01-16T10:13:40.650Z","updatedAt":"2019-01-16T10:13:40.825Z"},{"points":79,"pos":26,"createdAt":"2019-01-16T10:13:40.650Z","updatedAt":"2019-01-16T10:13:40.825Z"},{"points":64,"pos":39,"createdAt":"2019-01-16T10:13:40.650Z","updatedAt":"2019-01-16T10:13:40.825Z"}]},
    result = _.map(data.stats, ({points, pos}) => [points,pos]);
console.log(result);

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>