选择要在 JavaScript 掷骰子中掷多少骰子

Question

我正在尝试让我的脚本允许用户在我的输入字段中选择他们想要掷多少个骰子 (1-40)，按钮 onClick() 函数捕获该输入数字和 displaying/creating"dice"div的.

    <script>
    // ORIGINAL DICE ROLLER CODE, KEEP JUST IN CASE!!!//
      function rollDice(){
        var numDice = document.getElementById("diceNum").value;
        var status = document.getElementById("status");
        var d1 = Math.floor(Math.random() * 6) + 1;
        var diceRoll = d1;

        var container = document.getElementById("diceNum").value;

        for (var i = 0; i < diceNum.value; i++){
          //LOOP THROUGH APPHENDED INPUT VALUE AND POPULATE CONTAINER DIV//
          container.innerHTML = '<div class="dice">+diceRoll+</div>';
        };
        numDice.innerHTML = diceRoll;
        status.innerHTML = "You rolled "+diceRoll+".";+
      };


    // DICE ROLLER V(1.1 MOD) //
      function showdice() {
        var dicenum = prompt("how many dice would you like to roll?");
        var diceint = Math.round(dicenum);
        var diceroll, results = '';

        if (diceint >= "50") {
          alert("we don't have that many dice");
        }

        else if (diceint <= "0") {
          alert("you need to roll at least one die");
        }

        else
          for (i = 1; i <= diceint; i++) {
            diceroll = Math.ceil(Math.random() * 6);
            results += diceroll + ',';
          }
          alert(results);
      }


    // DICE ROLLER V(1.2 MOD) //
      function showdice() {
        var dicenum = prompt("how many dice would you like to roll?");
        var diceint = Math.round(dicenum);
        var results = [];

        if (diceint >= "50") {
          alert("we don't have that many dice");
        }

        else if (diceint <= "0") {
          alert("you need to roll at least one die");
        }

        else
          for (i = 0; i < diceint; i++) {
            results[i] = Math.ceil(Math.random() * 6);
          }
          alert(results.join(', '));
        }
    </script>
  </head>

  <body>
    <br/><br/><br/>

      <form class="" action="index.html" method="post">
        <h4>Choose number of dice to roll</h4>
        <p>[1 - 40]</p>
        <br/>
        <input id="diceNum" type="text" name="DiceNumber" placeholder="">
        <br/>
      </form>

      <br/><br/>

      <div id="dieContainer" class="dice">0</div>
      <br/><br/>
      <button onclick="rollDice()" style="margin-left: 20px; margin-right: 20px;">Roll Dice</button>
      <h2 id="status" style="clear:left;"></h2>
  </body>

我添加了两个不同的解决方案，列为 V(1.1) 和 V(1.2)，因为我只想严格使用 JavaScript 和 HTML 来完成此操作。

[编辑] 两个版本都已经过测试，但我似乎无法正确理解逻辑以使它们中的任何一个都能正常工作。

我如何继续捕获输入值和 create/display 多个骰子 div？

Answer 1

您最初尝试的简化版本：

function rollDice() {
  var numDice = document.getElementById("diceNum").value;
  var container = document.getElementById("dieContainer");

  container.innerHTML = "";

  for (var i = 0; i < numDice; i++) {
    var diceRoll = Math.floor(Math.random() * 6) + 1;
    container.innerHTML += '<div class="dice">' + diceRoll + '</div>';
  };
};

<h4>Choose number of dice to roll</h4>
<input id="diceNum" type="text" value="3">
<button onclick="rollDice()">Roll Dice</button>
<div id="dieContainer" class="dice"></div>

选择要在 JavaScript 掷骰子中掷多少骰子

Choosing how many dice to roll in JavaScript Dice Roller

html

javascript

dice