Edit in JSRUN


            
<form>
  <fieldset>
    <legend>个人信息采集:</legend>
请输入你的用户名:<br>
<input type="text" name="username">
<br>
请输入你的性别:<br>
<input type="text" name="sex">
<input type="submit" value="提交">
 </fieldset>
 </form>
<br/>
<form>  
<input type="radio" name="sex" value="girl" checked>girl
<br>
<input type="radio" name="sex" value="boy">boy
    
</form>