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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>进制转换</title>
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<style>
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/* 简单的CSS样式 */
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body {
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font-family: Arial, sans-serif;
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margin: 20px;
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}
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.container {
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max-width: 400px;
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margin: 0 auto;
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padding: 20px;
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border: 1px solid #ccc;
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border-radius: 5px;
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}
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label, input, select, button {
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display: block;
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margin-bottom: 10px;
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}
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input, select, button {
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width: 100%;
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padding: 8px;
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box-sizing: border-box;
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}
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#result {
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margin-top: 20px;
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font-weight: bold;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<h2>进制转换</h2>
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<label for="inputNumber">输入数字：</label>
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<input type="text" id="inputNumber" placeholder="请输入2-16进制数字">
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<label for="inputBase">原始进制：</label>
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<select id="inputBase">
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<!-- 使用JavaScript动态生成选项 -->
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<script>
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for (let i = 2; i <= 16; i++) {
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document.write('<option value="' + i + '">' + i + '</option>');
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}
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</script>
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</select>
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<label for="outputBase">目标进制：</label>
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<select id="outputBase">
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<!-- 同上，使用JavaScript动态生成选项 -->
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<script>
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for (let i = 2; i <= 16; i++) {
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document.write('<option value="' + i + '">' + i + '</option>');
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}
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</script>
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</select>
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<button onclick="convertBase()">转换</button>
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<div id="result"></div>
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</div>
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<script>
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function convertBase() {
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const inputNumber = document.getElementById('inputNumber').value;
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const inputBase = parseInt(document.getElementById('inputBase').value, 10);
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const outputBase = parseInt(document.getElementById('outputBase').value, 10);
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let decimalValue = parseInt(inputNumber, inputBase);
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if (isNaN(decimalValue)) {
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alert('输入的数字或进制无效！');
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return;
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}
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let result = '';
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let digits = '0123456789ABCDEF';
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while (decimalValue > 0) {
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result = digits[decimalValue % outputBase] + result;
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decimalValue = Math.floor(decimalValue / outputBase);
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}
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if (result === '') {
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result = '0';
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}
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document.getElementById('result').innerText = '转换结果：' + result;
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}
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</script>
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</body>
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</html>
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