javascript - 迭代object中的所有属性，查找并替换

Question

我从我的代码中生成了这个 Javascript 对象，而播放器对象是

const player = {
   cards: []
}

我的问题是如何循环遍历玩家对象中的所有卡牌并将所有“A”faceValue 替换为 1？使用 findIndex 还是 splice？

player: Object
cards: Array(2)
0: Array(1)
0: card {suit: "spades", face: "7", faceValue: 7}
length: 1
__proto__: Array(0)
1: Array(1)
0: card {suit: "clubs", face: "A", faceValue: 11}
length: 1
1: Array(2)
0: card {suit: "spades", face: "A, faceValue: 11}
length: 1

Answer 1

您可以使用Array map您的卡反对更新其值(value)

player.cards = player.cards.map(card => {
    if (card.face === 'A') card.faceValue = 1;
    return card;
});

更新:如果我们不生成新值，最好使用 forEach

player.cards.forEach(card => {
    if (card.face === 'A') card.faceValue = 1;
});