<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>练习</title>
</head>
<body>
<form action="">
<strong>用户注册</strong><br>
<br>
账号:<input type="text" name="" placeholder="不超过八个字符" ><br><br>
密码:<input type="password" name="" placeholder="6-16个字符" ><br><br>
邮箱:<input type="email" name="" placeholder="example@mail.com" ><br><br>
年龄:<input type="number" name="" placeholder="18" style="width: 20px" ><br><br>
生日:<input type="text" name="" placeholder="年 /月/日" ><br><br>
课程:<select name="">
<option value="html" >html</option>
<option value="java" >java</option>
</select>
<br><br>
爱好:<input type="checkbox" name="ai_hao">打游戏
<input type="checkbox" name="ai_hao">看电影
<input type="checkbox" name="ai_hao">撸代码<br><br>
性别:<input type="radio" name="xinbie">男
<input type="radio" name="xinbie">女
<input type="radio" name="xinbie">保密<br><br>
简介:<textarea name="" id="" cols="30" rows="10"></textarea>
<br><br>
<input type="submit" value="提交">
<input type="button" value="Ajax" style="border-radius: 5px">
</form>
</body>
</html>