Question

我正在尝试学习JavaScript，我正在尝试创建一个基本的比较游戏，我将卡号放在一个数组中，我随机调用其中的两个，我想比较其中的哪两个随机通话有更高的价值？请帮我。我已经设法编写程序来随机处理2张卡片，我只需要一个如何比较2张卡片的指导。

谢谢。

{
// This is my attempt to create a basic game for a simplified version of ta siau
//where players choose a card, and compares it with dealer's card. Bigger card wins the round

var cards = [2,3,4,5,6,7,8,9,10,"jack","queen","king","ace"]; //available cards in the deck
confirm("start game now?");

var playerCard = cards[Math.floor(Math.random() * cards.length)]; //choose a random card for player

console.log(playerCard);

var dealerCard = cards[Math.floor(Math.random() * cards.length)]; //choose a random card for dealer

console.log(dealerCard);
}

Answer 1

试试这个：

if (cards.indexOf(playerCard) > cards.indexOf(dealerCard)) {
   alert("Player wins!");
}
else {
   alert("Dealer wins");
}

Answer 2

有什么问题？

var playerVal=Math.floor(Math.random() * cards.length);
var playerCard = cards[playerVal];

var dealerVal=Math.floor(Math.random() * cards.length);
var dealerCard = cards[dealerVal]; 

        if(playerVal>dealerVal){
        //player wins
    }

卡被隔离。

Answer 3

您应该努力提高接受率，但是根据其他值检查值的主要方法是使用if

if(playerCard === dealerCard){
    console.log('cards are the same');
} else {
    console.log('cards are different');
}

请注意===。在大多数编程语言中，您使用==测试条件。在JavaScript中，你可以这样做，但像[] == false这样的奇怪的东西会评估为真。 ===要求严格遵守，因此[] === false确实是错误的。

Answer 4

您应该操作卡片索引

var playerCardIndex = Math.floor(Math.random() * cards.length)
    var playerCard = cards[playerCardIndex];

    var dealerCardIndex = Math.floor(Math.random() * cards.length)
    var dealerCard = cards[dealerCardIndex]

    if (playerCardIndex > dealerCardIndex) {...}

Javascript - 如何比较数组中的2个索引？

4 个答案: