javascript通过多维对象读取

我有一个javascript中的对象，看起来像这样：

Cards:Object
     |->Pack:Object
            |->Spades:Array[60]
                     |-> 0: Object
                          |->  Card_img: "www.test1.com"
                               Card_type:"9"
                         1:
                          |-> Card_img:"www.test2.com"
                              Card_type:"8"

如何循环使用spades{0，1等}中的所有键->值属性？所以它会返回给我类似{card_img:www.test1.com，card_img:www.test2.com}

我的代码： 如果我使用Object.keyscards.Packs.forEachfunction key，我会在非Object上调用Object.keys

您不能拥有具有重复键的对象，但可以将每个卡存储在一个数组中

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fori in Cards.Pack.Spades{…}Spades是一个数组，对吗？为什么不通过数值索引遍历数组呢？对于var i=0；iObject.keys(cards).forEach(function (key) { console.log(key); //gives Card how to drill down further? });

// a dummy cards object
var cards = {
  pack: {
    spades: [
      { card_img: 'blah.png', card_type: '9' },
      { card_img: 'blah.png', card_type: '10' },
    ]
  }
};

// array to hold the spades
var spades = [];

// loop through each of the "pack" properties
for (i in cards.pack) {

  // loop through each of the cards of this suit
  for (j in cards.pack[i]) {
    spades.push(cards.pack[i][j]);
  }
}

// print out your cards
console.log(spades);