xxxxxxxxxx<html><head> <meta charset="utf-8"> <title>W3Cschool(w3cschool.cn)</title> </head><body><form action="/statics/demosource/demo-form.php" novalidate>E-mail: <input type="email" name="user_email"><input type="submit"></form><p><strong>注意:</strong>在 Safari 和 Internet Explorer 9 及之前的版本中不支持 novalidate 属性。</p></body></html>