3 changed files with 87 additions and 3 deletions
--- a/212206273cx.html
+++ b/212206273cx.html
@ -0,0 +1,87 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>简单计算器</title>
+  <style>
+    body {
+      font-family: Arial, sans-serif;
+    }
+    input[type="text"], select {
+      width: 100px;
+      padding: 4px;
+      margin: 5px 0;
+    }
+    button {
+      padding: 10px;
+      margin: 10px 0;
+    }
+  </style>
+  <script>
+    function calculate() {
+      var firstNumber = document.getElementById("firstNumber").value;
+      var secondNumber = document.getElementById("secondNumber").value;
+      var operation = document.getElementById("operation").value;
+      var result;
+
+      // 验证输入是否为数字
+      if (isNaN(firstNumber) || isNaN(secondNumber)) {
+        alert("请输入有效的数字");
+        return;
+      }
+
+      firstNumber = parseFloat(firstNumber);
+      secondNumber = parseFloat(secondNumber);
+
+      switch (operation) {
+        case "+":
+          result = firstNumber + secondNumber;
+          break;
+        case "-":
+          result = firstNumber - secondNumber;
+          break;
+        case "*":
+          result = firstNumber * secondNumber;
+          break;
+        case "/":
+          if (secondNumber !== 0) {
+            result = firstNumber / secondNumber;
+          } else {
+            alert("除数不能为0");
+            return;
+          }
+          break;
+        default:
+          alert("无效的操作");
+          return;
+      }
+
+      document.getElementById("result").value = result;
+    }
+  </script>
+</head>
+<body>
+  <h1>简单计算器</h1>
+
+  <form>
+    <label for="firstNumber">第一个数：</label>
+    <input type="text" id="firstNumber" placeholder="输入数字" required /><br /><br />
+
+    <label for="secondNumber">第二个数：</label>
+    <input type="text" id="secondNumber" placeholder="输入数字" required /><br /><br />
+
+    <label for="operation">操作：</label>
+    <select id="operation" required>
+      <option value="+">加 (+)</option>
+      <option value="-">减 (-)</option>
+      <option value="*">乘 (*)</option>
+      <option value="/">除 (/)</option>
+    </select><br /><br />
+
+    <input type="button" value="计算" onclick="calculate()" /><br /><br />
+
+    <label for="result">结果：</label>
+    <input type="text" id="result" readonly /><br /><br />
+  </form>
+</body>
+</html>
+
--- a/README.md
+++ b/README.md
@ -1,2 +0,0 @@
-# computer
-
--- a/t.html
+++ b/t.html
@ -1 +0,0 @@
-4645