<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title>文本框 - 含帮助文本</title> <link rel="stylesheet" href="../assets/mdui-v0.4.3/css/mdui.min.css"/> </head> <body> <div class="mdui-container"> <div class="mdui-textfield"> <input type="email" class="mdui-textfield-input" placeholder="邮箱"/> <div class="mdui-textfield-helper">Helper Text</div> </div> </div> <script src="../assets/mdui-v0.4.3/js/mdui.min.js"></script> </body> </html>