Javascript 如何迭代此对象以获得新对象？

我对Javascript比较陌生，刚刚学习了循环和in循环的基本知识。如何迭代该对象以获得某些键和值？对象中有一堆嵌套对象，所以我有点困惑。我在考虑使用某种“Object…（）”方法，但不确定使用哪种方法

期望的输出结果是一个具有给定champion键的对象，后跟champion id/name=

{“266”：“Aatrox”，“103”：“Ahri”}

下面是输入示例

  "type": "champion",
  "format": "standAloneComplex",
  "version": "10.16.1",
  "data": {
    "Aatrox": {
      "version": "10.16.1",
      "id": "Aatrox",
      "key": "266",
      "name": "Aatrox",
      "title": "the Darkin Blade",
      "blurb": "Once honored defenders of Shurima against the Void, Aatrox and his brethren would eventually become an even greater threat to Runeterra, and were defeated only by cunning mortal sorcery. But after centuries of imprisonment, Aatrox was the first to find...",
      "info": {
        "attack": 8,
        "defense": 4,
        "magic": 3,
        "difficulty": 4
      },
      "image": {
        "full": "Aatrox.png",
        "sprite": "champion0.png",
        "group": "champion",
        "x": 0,
        "y": 0,
        "w": 48,
        "h": 48
      },
      "tags": [
        "Fighter",
        "Tank"
      ],
      "partype": "Blood Well",
      "stats": {
        "hp": 580,
        "hpperlevel": 90,
        "mp": 0,
        "mpperlevel": 0,
        "movespeed": 345,
        "armor": 38,
        "armorperlevel": 3.25,
        "spellblock": 32.1,
        "spellblockperlevel": 1.25,
        "attackrange": 175,
        "hpregen": 3,
        "hpregenperlevel": 1,
        "mpregen": 0,
        "mpregenperlevel": 0,
        "crit": 0,
        "critperlevel": 0,
        "attackdamage": 60,
        "attackdamageperlevel": 5,
        "attackspeedperlevel": 2.5,
        "attackspeed": 0.651
      }
    },
    "Ahri": {
      "version": "10.16.1",
      "id": "Ahri",
      "key": "103",
      "name": "Ahri",
      "title": "the Nine-Tailed Fox",
      "blurb": "Innately connected to the latent power of Runeterra, Ahri is a vastaya who can reshape magic into orbs of raw energy. She revels in toying with her prey by manipulating their emotions before devouring their life essence. Despite her predatory nature...",
      "info": {
        "attack": 3,
        "defense": 4,
        "magic": 8,
        "difficulty": 5
      },
      "image": {
        "full": "Ahri.png",
        "sprite": "champion0.png",
        "group": "champion",
        "x": 48,
        "y": 0,
        "w": 48,
        "h": 48
      },
      "tags": [
        "Mage",
        "Assassin"
      ],
      "partype": "Mana",
      "stats": {
        "hp": 526,
        "hpperlevel": 92,
        "mp": 418,
        "mpperlevel": 25,
        "movespeed": 330,
        "armor": 20.88,
        "armorperlevel": 3.5,
        "spellblock": 30,
        "spellblockperlevel": 0.5,
        "attackrange": 550,
        "hpregen": 6.5,
        "hpregenperlevel": 0.6,
        "mpregen": 8,
        "mpregenperlevel": 0.8,
        "crit": 0,
        "critperlevel": 0,
        "attackdamage": 53.04,
        "attackdamageperlevel": 3,
        "attackspeedperlevel": 2,
        "attackspeed": 0.668
      }
    }```

const obj={
姓名：“山姆”，
老:30,，
嵌套的：{
数据：“ABC”，
时间：3:15
}
}
用于（让我输入obj）{
console.log（i）；//返回值
log（obj[i]）；//返回键
for（设j为obj[i]）{
console.log（j）；//返回嵌套的2d级别的值
log（obj[i][j]）；//返回嵌套2d级别的键
}
}