Question

我正在制作一个基本的二十一点游戏，但我遇到了一些问题。我需要帮助使我的立场按钮执行名为keepcards的功能我不确定为什么它不工作，当按下支架按钮时不做出决定如果球员得分更高，则更少的矿石等于计算机得分。

var randomnumber = Math.floor(Math.random() * 10 + 1);

function random() {
  return randomnumber;
}

var total = randomnumber;

function dealcard() {
  total += Math.floor(Math.random() * 10 + 1);
  document.getElementById('playerscards').value = total;

  if (total > 21) {
    alert("You have gone bust click new game to play again!");
  }
}

function keepcards() {
  if (total > 21) {
    alert("You lose!");
  } else if (total > computerscards) {
    alert("You win!");
  } else if (total = computerscards) {
    alert("It is a draw!");
  } else if (total < computerscards) {
    alert("You lose!");
  } else {
    alert("You lose!");
  }

}

<head>
  <h1><i>BLACKJACK</i></h1>
  <h4>
    Computers Cards: <input type="text" id="computerscards" value="18">
    <br>Player 1 cards: <input type="text" id="playerscards">
  </h4>
</head>

<input type="button" value="start" onclick="document.getElementById('playerscards').value = random()">

<input type="button" value="deal" onclick="dealcard()">

<input type="button" value="stand" onclick="keepcards">

<input type="button" value="new game" onclick="window.location.reload()">

<p>To start the game press start and draw a card<br> Press deal to add a new card <br> press stand if you do not wish to draw a new card<br> Prsee new game if you want to refresh the page to play a mew game</p>

Answer 1

else if (total = computerscards)应为else if (total == computerscards)

您目前正在将计算机卡分配给总计，而不是将它们进行比较，结果总是如此，因此您永远不会点击下一个else if。

编辑：

onclick="keepcards"应为onclick="keepcards()"

此外，return randomnumber将始终返回相同的号码，而不是每次都重新生成一个。您的函数应该return Math.floor(Math.random() * 10 + 1)。

您的<head>位于<body>。

内

最后一次比较else if (total < computerscards)没用，因为它与最终的else做同样的事情。

Answer 2

当提供函数作为字符串时，您需要包括括号()。它应该是...onclick="keepcards()">

以下更新的代码：

var randomnumber = Math.floor(Math.random() * 10 + 1);

function random() {
  return randomnumber;
}

var total = randomnumber;

function dealcard() {
  total += Math.floor(Math.random() * 10 + 1);
  document.getElementById('playerscards').value = total;

  if (total > 21) {
    alert("You have gone bust click new game to play again!");
  }
}

function keepcards() {
  if (total > 21) {
    alert("You lose!");
  } else if (total > computerscards) {
    alert("You win!");
  } else if (total = computerscards) {
    alert("It is a draw!");
  } else if (total < computerscards) {
    alert("You lose!");
  } else {
    alert("You lose!");
  }

}

<head>
  <h1><i>BLACKJACK</i></h1>
  <h4>
    Computers Cards: <input type="text" id="computerscards" value="18">
    <br>Player 1 cards: <input type="text" id="playerscards">
  </h4>
</head>

<input type="button" value="start" onclick="document.getElementById('playerscards').value = random()">

<input type="button" value="deal" onclick="dealcard()">

<input type="button" value="stand" onclick="keepcards()">

<input type="button" value="new game" onclick="window.location.reload()">

<p>To start the game press start and draw a card<br> Press deal to add a new card <br> press stand if you do not wish to draw a new card<br> Prsee new game if you want to refresh the page to play a mew game</p>

Answer 3

查看<div class="things"> <div class="thing"> <h2>{{ thing.title }}</h2> <p>{{ thing.content }}</p> <small>{{ thing.date }}</small> </div> <div class="thing"> <h2>{{ thing.title }}</h2> <p>{{ thing.content }}</p> <small>{{ thing.date }}</small> </div> <div class="thing"> <h2>{{ thing.title }}</h2> <p>{{ thing.content }}</p> <small>{{ thing.date }}</small> </div> <div class="thing"> <h2>{{ thing.title }}</h2> <p>{{ thing.content }}</p> <small>{{ thing.date }}</small> </div> <div class="thing"> <h2>{{ thing.title }}</h2> <p>{{ thing.content }}</p> <small>{{ thing.date }}</small> </div> </div>属性中所有函数调用结尾处的内容。看到缺少的东西？

onclick vs ThisIsAFunction()

Answer 4

您没有在onclick事件中调用您的函数，因此永远不会调用它。试试<input type="button" value="stand" onclick="keepcards()">

如何使用我的按钮使这个功能工作

4 个答案: