xxxxxxxxxx<!DOCTYPE html><html><title>jQuery :radio选择器示例 - 基础教程(div.cn)</title><head><script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script><script>$(document).ready(function(){ $(":radio").wrap("<span style='background:black'>");});</script></head><body><form action=""> 姓名: <input type="text" name="user"><br> 女士<input type="radio" name="gender" value="f"><br> 男士:<input type="radio" name="gender" value="m"></form></body></html>