javascript - 如何从在 javascript 中具有相同键的对象创建对象数组

Question

我有一个看起来像这样的对象数组

[{
        "name": "Agile Process",
        "id": 27,
        "score": 3,
        "source": "Self"
    },{
        "name": "Agile Process",
        "id": 27,
        "score": 4,
        "source": "Trainer"
    },{
        "name": "2 & 3 Tier Architecture",
        "id": 37,
        "score": 4,
        "source": "Self"
    },{
        "name": "2 & 3 Tier Architecture",
        "id": 37,
        "score": 5,
        "source": "Trainer"
 }]

我想做这样的东西，我一直在努力，但我似乎没有掌握它。

[
    {
        "name": "Agile Process",
        "id": 7,
        "data": [
            {
                "score": 3,
                "source": "Self"
            },{
                "score": 4,
                "source": "Trainer"
            }
        ]
    },
    {
        "name": "2 & 3 Tier Architecture",
         "id": 37,
         "data": [
            {
                "score": 4,
                "source": "Self"
            },{
                "score": 5,
                "source": "Trainer"
            }]
        }
  ];

我该如何解决这个问题？

Answer 1

一种可能的方法:

_.values(_.reduce(arr, function(acc, el) {
  var id = el.id;
  if (!acc.hasOwnProperty(id)) {
    acc[id] = _.pick(el, 'id', 'name');
    acc[id].data = [];
  }
  acc[id].data.push(_.pick(el, 'score', 'source'));
  return acc;
}, {}));

Demo .当您需要对事物进行分组时，这是一种常用方法。