W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <body> <p>您可以通过 selected 属性预选择某些选项。</p> <form action="http://w3c.80zhan.com/demo/demo_form.asp"> <select name="cars"> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="fiat" selected>Fiat</option> <option value="audi">Audi</option> </select> <br><br> <input type="submit"> </form> </body> </html>
查看结果: