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</nav> <div class="container"> <h1>🔊 频率换算�?/h1> <div class="card"> <div class="input-group"> <label for="input-----">输入数�?/label> <input type="number" id="value" value="1000" 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="hz" selected>赫兹 (Hz)</option> <option value="khz">千赫�?(kHz)</option> <option value="mhz">兆赫�?(MHz)</option> <option value="ghz">吉赫�?(GHz)</option> <option value="rpm">�?分钟 (RPM)</option> <option value="rads">弧度/�?/option> <option value="bpm">�?分钟 (BPM)</option> </select> </div> <div class="results" id="results"></div> </div> </div> <script> const toHz = { hz: 1, khz: 1000, mhz: 1000000, ghz: 1000000000, rpm: 1 / 60, rads: 1 / (2 * Math.PI), bpm: 1 / 60 }; const labels = { hz: "赫兹 (Hz)", khz: "千赫�?(kHz)", mhz: "兆赫�?(MHz)", ghz: "吉赫�?(GHz)", rpm: "�?分钟 (RPM)", rads: "弧度/�?, bpm: "�?分钟 (BPM)" }; function convert() { const value = parseFloat(document.getElementById("value").value) || 0; const unit = document.getElementById("unit").value; const hz = value * toHz[unit]; let html = ""; for (const [key, factor] of Object.entries(toHz)) { const result = hz / factor; const formatted = result < 0.0001 || result > 999999999 ? 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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