下拉框:
<form> <label>名称</label> <select> <optin>选项</option> </select> </form>
<form>
<select>
<option>
</option>
</select>
</form>
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>下拉框></title> </head> <body> <form method="post" action="aaa.php"> <lable>喜欢的国家</lable> <select> <option value="中国">中国</option> <option value="美国">美国</option> <option value="英国">英国</option> <option value="加拿大">加拿大</option> <option value="none" selected="selevted">none</option> </select> </form> </body> </html>