Question

我正在尝试使用JavaScript和HTML开发二十一点游戏。

我在REPL上单独使用JavaScript测试过它并且工作正常，我现在尝试将其移到html页面，以便最终添加一些图形。

然而，当我在下方运行代码时，没有任何一个玩家的手牌，手牌或胜利者出现在屏幕上，但提示会出现。

有人能看到这个问题吗？

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

您正尝试在第66行（函数库）中使用ID housecurrenthand 来获取DOM元素的值，但是在您的html文件中，您已使用ID声明了标头 currenthousehand （第12行）。

如果您不使用谷歌浏览器，我建议您尝试一下。当您按 F12 时，有一个开发人员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。如果您正在使用任何其他浏览器，只需查找文档或教程如何处理当前问题。

HTML＆amp; Javascript二十一点游戏不会显示赢家和手

1 个答案: