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</nav> <div class="container"> <h1>💪 功率换算�?/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="w" selected>瓦特 (W)</option> <option value="kw">千瓦 (kW)</option> <option value="mw">兆瓦 (MW)</option> <option value="hp">马力 (hp)</option> <option value="ps">公制马力 (PS)</option> <option value="ftlbs">英尺·磅力/�?/option> <option value="btuhr">BTU/小时</option> <option value="cals">卡路�?�?/option> </select> </div> <div class="results" id="results"></div> </div> </div> <script> const toW = { w: 1, kw: 1000, mw: 1000000, hp: 745.7, ps: 735.5, ftlbs: 1.356, btuhr: 0.293, cals: 4.184 }; const labels = { w: "瓦特 (W)", kw: "千瓦 (kW)", mw: "兆瓦 (MW)", hp: "马力 (hp)", ps: "公制马力 (PS)", ftlbs: "英尺·磅力/�?, btuhr: "BTU/小时", cals: "卡路�?�? }; function convert() { const value = parseFloat(document.getElementById("value").value) || 0; const unit = document.getElementById("unit").value; const watts = value * toW[unit]; let html = ""; for (const [key, factor] of Object.entries(toW)) { const result = watts / factor; const formatted = result < 0.0001 || result > 999999 ? 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