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您可以通过插入一个空选项或 optgroup 来做到这一点
<select><optgroup></optgroup></select>
或者
<select><option></option></select>
或者作为@Shivam,你可以这样做
<select><option selected="selected">Pick an Option</option>
但是你提到你不需要虚拟选项。但是默认情况下,浏览器的行为是您在问题中提到的。