<form action="" method="get"> <h1>text</h1> <label for="i1">用户名:</label><input id="i1" type="text" value="小明" name="userName" placeholder="请输入账号" /> <br> <br> <label for="i2">邮箱:</label><input id="i2" type="text" name="e_mail" placeholder="请输入邮箱...