<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>This is all form</title>
</head>
<body>
<form action="" method="post">
    username:<input type="text" name="username"> <br><br>
    password:<input type="password" name="password"> <br><br>
    age:<input type="number" name="age"> <br><br>
    gender:<label><input type="radio" name="gender" value="1">man</label>  <!--label:扩大元素的点击范围;-->
    <label><input type="radio" name="gender" value="0">woman</label> <br><br><!--radio:表示只能选择一个-->
    bobby:<label><input type="checkbox" name="hobby" value="1">java</label> <!--checkbox表示可以多选-->
    <label><input type="checkbox" name="hobby" value="2">c++</label>
    <label><input type="checkbox" name="hobby" value="3">python</label> <br><br>
    image:<input type="file" name="image"> <br><br>
    date:<input type="date" name="date"> <br><br>
    time:<input type="time" name="time"> <br><br>
    datetime:<input type="datetime-local" name="datetime"> <br><br>
    email:<input type="email" name="email"> <br><br>
    degree:<select name="degree">
    <option value="1">primary</option>
    <option value="2">middle</option>
    <option value="3">high</option>
</select> <br><br>
    description:<textarea name="description" cols="20" rows="10"></textarea>
    <input type="hidden" name="id" value="1">  <!--隐藏提交-->
    <br><br>
    <!--表单常见标签-->
    <input type="button" value="button">
    <input type="submit" value="submit">
    <input type="reset" value="reset">
</form>
</body>
</html>