Javascript：在给定现有对象的情况下使用循环设置对象键

Question

我的 objective 是创建一个函数，其中 returns 一个新对象，由作为名称的键和作为玩家编号的值组成：

var newObj = {"Brandon Bass": 2, "Tarik Black":19,...}

我有这个对象：

  var playerObj = {
  players: [{
      name: "Brandon Bass",
      number: 2,
      stats: {
        points: 2.5
      }
    },

    {
      name: "Tarik Black",
      number: 19,
      stats: {
        points: 2.5
      }
    }, {
      name: "Anothy Broqn",
      number: 11,
      stats: {
        points: 4.8
      }
    },

    {
      name: "Kobe Bryant",
      number: 22,
      stats: {
        points: 5.6
      }
    }
  ]};

这是my most recent attempt。这可能吗？

for (var key in playerObj.players) {
  var newObj = {};
  for (var i = 0; i < playerOjb.players.length; i++) {
    newObj[playerObj.players[i]] = playerObj.players[key].number;
  }
  return newObj;
}

Answer 1

当循环数组时，使用标准的 for 循环，而不是 for..in，然后简单地创建对象：

var newObj = {}
for (var i = 0; i < playerObj.players.length; i++) {
    newObj[playerObj.players[i].name] = playerObj.players[i].number;
}

Answer 2

尝试 reduce 这样的数组，

var newObj = playerObj.players.reduce(function(old,itm){
   old[itm.name] = itm.number
   return old;
}, {});

Javascript：在给定现有对象的情况下使用循环设置对象键

Javascript: Setting object keys with loop given existing object

javascript

oop

for-loop

object

key-value

DEMO