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</nav> <div class="container"> <h1>🧊 体积换算�?/h1> <div class="card"> <div class="input-group"> <label for="input-----">输入数�?/label> <input type="number" id="value" value="1" min="0" step="any" aria-label="数字输入�? 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="ml">毫升 (mL)</option> <option value="l" selected>�?(L)</option> <option value="cm3">立方厘米 (cm³)</option> <option value="m3">立方�?(m³)</option> <option value="gal">加仑 (美制)</option> <option value="qt">夸脱 (美制)</option> <option value="pt">品脱 (美制)</option> <option value="cup">�?(美制)</option> <option value="floz">液量盎司 (美制)</option> <option value="tbsp">汤匙</option> <option value="tsp">茶匙</option> </select> </div> <div class="results" id="results"></div> </div> </div> <script> const toML = { ml: 1, l: 1000, cm3: 1, m3: 1000000, gal: 3785.41, qt: 946.353, pt: 473.176, cup: 236.588, floz: 29.5735, tbsp: 14.787, tsp: 4.929 }; const labels = { ml: "毫升 (mL)", l: "�?(L)", cm3: "立方厘米 (cm³)", m3: "立方�?(m³)", gal: "加仑 (美制)", qt: "夸脱 (美制)", pt: "品脱 (美制)", cup: "�?(美制)", floz: "液量盎司", tbsp: "汤匙", tsp: "茶匙" }; function convert() { const value = parseFloat(document.getElementById("value").value) || 0; const unit = document.getElementById("unit").value; const ml = value * toML[unit]; let html = ""; for (const [key, factor] of Object.entries(toML)) { const result = ml / factor; const formatted = result < 0.0001 || result > 999999 ? result.toExponential(4) : result.toLocaleString("zh-CN", { maximumFractionDigits: 6 }); 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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