HTML & Javascript 二十一点游戏不会显示赢家和牌局

Question

我正在尝试使用 JavaScript 和 HTML 开发二十一点游戏。

我已经在 REPL 上单独使用 JavaScript 对其进行了测试，它运行良好，我现在尝试将其移至 html 页面，以便我最终可以添加一些图形.

但是当我运行下面的代码none玩家手牌，庄家手牌或赢家出现在屏幕上时，但提示确实如此。

有人能看出这有什么问题吗？

function play() {
  playersQ = prompt('How many people are playing?');
  playershands = [];
  i = 0;
  count = 0;
  var player_cards = 0;

  function player() {
    var player_cards = Math.floor(Math.random() * 21) + 1;
    while (player_cards < 21) {
      Hit = prompt('Players cards are ' + player_cards + ' Would you like stick or twist?(S/T)')
      if (Hit == 'T') {
        player_cards = player_cards + Math.floor(Math.random() * 11) + 1;
      } else if (Hit == 'S') {
        break;
      } else if (player_cards > 21) {
        alert('Player is bust');
        break;
      }
    }
    return player_cards;
  }

  function house() {
    var house_cards = Math.floor(Math.random() * 21) + 1;
    document.getElementById('housecurrenthand').innerHTML = ('House has ' + house_cards);
    while (house_cards < 18) {
      house_cards = house_cards + Math.floor(Math.random() * 11);
      document.getElementById('housecurrenthand').innerHTML = ('House has ' + house_cards);
      if (house_cards > 21) {
        alert('House is bust')
      }
    }
    return house_cards;
  }

  while (i < playersQ) {
    playershands.push(player());
    i = i + 1;
  }

  var house_hand = house();

  while (count < playersQ) {
    count2 = count + 1
    if (playershands[count] > house_hand && playershands[count] < 22) {
      document.getElementById('playershand' + [i]).innerHTML = ('Player ' + count2 + ' has ' + playershands[count]);
      document.getElementById('winner').innerHTML = ('Player wins');
      count = count + 1;
    } else if (house_hand > playershands[count] && house_hand < 22) {
      document.getElementById('househand').innerHTML = ('House has' + house_hand);
      document.getElementById('winner').innerHTML = ('House wins');
      break;
    } else if (house_hand == playershands[count]) {
      document.getElementById('winner').innerHTML = ('draw');
      break;
    }
  }
}

<head>
  <h1 align="center">21 Game</h1>
</head>

<body bgcolor="#458B00">
  <div align='center'>
    <h3>House Cards</h3>
    <h5 id='currenthousehand'></h5>
    <h5 id='househand'> </h5>

    <h3>Players Cards</h3>
    <h5 id='playershand1'> </h5>
    <h5 id='playershand2'> </h5>
    <h5 id='playershand3'> </h5>
    <h5 id='playershand4'> </h5>
    <h5 id='playershand5'> </h5>
    <h5 id='playershand6'> </h5>
    <h5 id='playershand7'> </h5>
    <h5 id='playershand8'> </h5>
    <h5 id='playershand9'> </h5>
    <h5 id='playershand10'> </h5>

    <h4 id='winner'> </h4>

    <button onclick="play()" float='bottom'>Play</button>
  </div>
</body>

Answer 1

您正在尝试获取第 66 行（功能房）中 ID 为 housecurrenthand 的 DOM 元素的值，但在您的 html 文件中，您已使用 ID currenthousehand（第 12 行）声明了 header。

如果您不使用 Google Chrome，我鼓励您尝试一下。当您按下 F12 时，有开发者工具可以帮助您找出问题所在。

查看 Google Chrome 的官方文档，其中有很多关于如何调试 Web 代码的信息。如果您使用的是任何其他浏览器，只需查找文档或教程如何处理当前问题。

HTML & Javascript 二十一点游戏不会显示赢家和牌局

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