<select><option value="選項1">選項1</option><option value="選項2">選項2</option><option value="選項3">選項3</option></select>

<select><option value="選項1">選項1</option><option value="選項2" selected>選項2</option><option value="選項3">選項3</option></select>

<select><optgroup label="顏色"><option value="紅色">紅色</option><option value="綠色">綠色</option><option value="藍色">藍色</option></optgroup><optgroup label="尺寸"><option value="小號">小號</option><option value="中號">中號</option><option value="大號">大號</option></optgroup></select>