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placeholder="请输入数字输入框" /> </div> <div class="input-group"> <label>选择单位</label> <select id="unit"> <option value="ms">毫秒</option> <option value="s" selected>�?/option> <option value="min">分钟</option> <option value="h">小时</option> <option value="d">�?/option> <option value="w">�?/option> <option value="m">�?(30�?</option> <option value="y">�?(365�?</option> </select> </div> <div class="results" id="results"></div> </div> </div> <script> const units = { ms: 0.001, s: 1, min: 60, h: 3600, d: 86400, w: 604800, m: 2592000, y: 31536000 }; const labels = { ms: "毫秒", s: "�?, min: "分钟", h: "小时", d: "�?, w: "�?, m: "�?, y: "�? }; function convert() { const value = parseFloat(document.getElementById("value").value) || 0; const unit = document.getElementById("unit").value; const seconds = value * units[unit]; let html = ""; for (const [key, factor] of Object.entries(units)) { const result = seconds / factor; const formatted = result < 0.0001 ? result.toExponential(4) : result > 999999 ? result.toExponential(4) : result.toLocaleString("zh-CN", { maximumFractionDigits: 4 }); html += `<div class="result-item"><span class="result-label">${labels[key]}</span><span class="result-value">${formatted}</span></div>`; } document.getElementById("results").innerHTML = html; } document.getElementById("value").addEventListener("input", convert); document.getElementById("unit").addEventListener("change", convert); convert(); // Theme toggle function toggleTheme() { const html = document.documentElement; const currentTheme = html.getAttribute("data-theme"); const newTheme = currentTheme === "light" ? 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