陈正琦提交

10 months ago · 45caa506c2
commit 45caa506c2
1 changed files with 90 additions and 0 deletions
--- a/计算器.html
+++ b/计算器.html
@ -0,0 +1,90 @@
 <!DOCTYPE html>
 <html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Simple Calculator</title>
    <style>
      body {
        font-family: Arial, sans-serif;
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        margin: 0;
      }
      .calculator {
        border: 1px solid #ccc;
        padding: 20px;
        box-shadow: 0 0 10px #ccc;
      }
      input[type="text"] {
        width: 220px;
        padding: 10px;
        margin-bottom: 10px;
      }
      button {
        padding: 10px 20px;
        margin-right: 5px;
        cursor: pointer;
      }
    </style>
  </head>
  <body>
    <div class="calculator">
      <input type="text" id="firstNumber" placeholder="输入第一个数" />
      <input type="text" id="secondNumber" placeholder="输入第二个数" />
      <button onclick="calculate('+')">+</button>
      <button onclick="calculate('-')">-</button>
      <button onclick="calculate('*')">*</button>
      <button onclick="calculate('/')">/</button>
      <button onclick="calculate('%')">%</button>
      <div id="result">结果:</div>
    </div>
    <script>
      function calculate(operator) {
        var firstNumber = parseFloat(
          document.getElementById("firstNumber").value
        );
        var secondNumber = parseFloat(
          document.getElementById("secondNumber").value
        );
        var result;
        switch (operator) {
          case "+":
            result = firstNumber + secondNumber;
            break;
          case "-":
            result = firstNumber - secondNumber;
            break;
          case "*":
            result = firstNumber * secondNumber;
            break;
          case "/":
            if (secondNumber !== 0) {
              result = firstNumber / secondNumber;
            } else {
              alert("Cannot divide by zero.");
              return;
            }
            break;
          case "%":
            if (secondNumber !== 0) {
              result = firstNumber % secondNumber;
            } else {
              alert("Cannot calculate modulo by zero.");
              return;
            }
            break;
          default:
            alert("Unsupported operation.");
            return;
        }
        document.getElementById("result").textContent = "Result: " + result;
      }
    </script>
  </body>
 </html>