Question

我试图制作一个显示一系列图像的游戏，具体取决于用户放入输入框的数量。我希望它能够显示来自我的图像数组的随机图像，无论用户多次将其设置为显示它。

这是我的JavaScript：

var numLeaves = 0;
var numSeq = ["1.jpg","2.png","3.jpg","4.jpg","5.png","6.jpg","7.jpg","8.jpg","9.jpg","0.jpg"];

function startGame() {

  while (1 < 10) {
    randomNum = Math.floor((Math.random() * numSeq.length));

    if (randomNum === 0) {
      numLeaves = 1;
    } else if (randomNum == 1) {
      numLeaves = 2;
    } else if (randomNum == 2) {
      numLeaves = 3;
    } else if (randomNum == 3) {
      numLeaves = 4;
    } else if (randomNum == 4) {
      numLeaves = 5;
    } else if (randomNum == 5) {
      numLeaves = 6;
    } else if (randomNum == 6) {
      numLeaves = 7;
    } else if (randomNum == 7) {
      numLeaves = 8;
    } else if (randomNum == 8) {
      numLeaves = 9;
    } else if (randomNum == 9) {
      numLeaves = 0;
    }

    document.getElementById("picture").src = numSeq[randomNum];
    setInterval(function(){document.getElementById("picture").src = ""}, 1500);
    i++;
  }


}

function submitInput() {
  if (document.getElementById("leaveGuess").value == numLeaves) {
    document.getElementById("result").innerHTML = "Correct!";
  }
  else
  {
    document.getElementById("result").innerHTML = "Incorrect... There were " + numLeaves + " leaves on the shamrock";
  }

}

这是我的HTML：

<!DOCTYPE html>

<html>

  <head>
    <title></title>
    <link rel="stylesheet" type="text/css" href="rep.css">
    <script type="text/javascript" src="rep.js"></script>
  </head>


  <body>
    <div id="test"></div>

    <div id="content">

      <div id="title" class="center">
        <h1>Repetitive</h1>
        <p>Created by Daniel Hancock</p>
        <h2>Instructions:</h2>
        <p>In under one second memorize the amount of leaves on the shamrock. <br> After one second, you will be asked to enter the number of leaves that you saw on the shamrock.</p>
        <label for="numSequence"><strong>Length:</strong></label>
        <input id="numSequence"> <br>
        <button onclick="startGame()" id="startButton">New</button>
      </div>

      <div id="display" class="center">
        <img src="" id="picture" width="215" height="215">
        <div id="guessing" class="center">
          <input id="leaveGuess">
          <button onclick="submitInput()">Submit</button>
          <p id="result"></p>
        </div>
      </div>

    </div>
  </body>

</html>

向我解释，就像我五岁。

Answer 1

我不明白你的问题，但我在代码中发现了一些问题：

1）你没有将numLeaves声明为全局变量（也许）并且你在不使用他的情况下将他更新10次。

2）set var i = 0;在startGame函数的开头或更好的解决方案是使用而不是

3）为什么你做randomNum === 0而不是randomNum == 0？

提示：你可以写 numLeaves =（randomNum + 1）％10; 而不是10 if命令

Answer 2

我可以在这里看到一个主要问题 - 你还没有在任何地方声明i。在while循环中，您将条件设置为(1 < 10)，这将始终为真。

我建议将其更改为使用这样的for循环：

for (int i=0; i<10; i++)
{
    randomNum = Math.floor((Math.random() * numSeq.length));

    if (randomNum == 9)
    {
        numLeaves = 0;
    }
    else
    {
        numLeaves = randomNum + 1;
    }

    document.getElementById("picture").src = numSeq[randomNum];
    setInterval(function(){document.getElementById("picture").src = ""}, 1500);
}

希望这有帮助。

我如何让我的游戏工作？ ELI5

2 个答案: