diff --git a/index.html b/index.html
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+<!DOCTYPE html>  
+<html lang="zh">  
+<head>  
+    <meta charset="UTF-8">  
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">  
+    <title>进制转换程序</title>  
+    <style>  
+        body { font-family: Arial, sans-serif; }  
+        input { margin-bottom: 10px; }  
+    </style>  
+</head>  
+<body>  
+    <h1>进制转换程序</h1>  
+    
+    <label for="fromBase">输入进制 (R1):</label>  
+    <input type="number" id="fromBase" value="10" min="2" max="16"><br>  
+
+    <label for="numberX">输入数字 X:</label>  
+    <input type="text" id="numberX"><br>  
+    
+    <label for="toBase">转换进制 (R2):</label>  
+    <input type="number" id="toBase" value="10" min="2" max="16"><br>  
+    
+    <button onclick="convertBase()">转换</button>  
+    
+    <h2>转换结果 Y:</h2>  
+    <p id="result"></p>  
+    
+    <script>  
+        function convertBase() {  
+            // 获取输入值  
+            const fromBase = parseInt(document.getElementById('fromBase').value);  
+            const numberX = document.getElementById('numberX').value.trim();  
+            const toBase = parseInt(document.getElementById('toBase').value);  
+
+            // 验证输入  
+            if (!isValidNumberInBase(numberX, fromBase)) {  
+                document.getElementById('result').innerText = "输入的数字 X 在指定的进制 R1 中无效！";  
+                return;  
+            }  
+
+            // 将 X 从 R1 进制转换为十进制  
+            const decimalValue = parseInt(numberX, fromBase);  
+
+            // 将十进制转换为 R2 进制  
+            const resultY = decimalToBase(decimalValue, toBase);  
+
+            // 输出结果  
+            document.getElementById('result').innerText = resultY;  
+        }  
+
+        function isValidNumberInBase(number, base) {  
+            const validCharacters = '0123456789ABCDEF'.substring(0, base);  
+            for (let char of number.toUpperCase()) {  
+                if (!validCharacters.includes(char)) {  
+                    return false;  
+                }  
+            }  
+            return true;  
+        }  
+
+        function decimalToBase(decimal, base) {  
+            if (decimal === 0) return '0';  
+            let result = '';  
+            while (decimal > 0) {  
+                const remainder = decimal % base;  
+                result = (remainder < 10 ? remainder : String.fromCharCode(remainder - 10 + 'A'.charCodeAt(0))) + result;  
+                decimal = Math.floor(decimal / base);  
+            }  
+            return result;  
+        }  
+    </script>  
+</body>  
+</html>
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