<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery实现复选框成对选择，对应取消功能</title>
<script type="text/javascript" src="/js/jquery-1.6.2.min.js"></script>
<script>
$(function(){
var classA = $(".classA");
classA.change(function(){
classA.attr("checked",Boolean($(this).attr("checked")));
})
var classB = $(".classB");
classB.change(function(){
classB.attr("checked",Boolean($(this).attr("checked")));
})
})
</script>
</head>
<body>
<p>A组</p>
<input type="checkbox" class="classA">
<input type="checkbox" class="classA">
<p>B组</p>
<input type="checkbox" class="classB">
<input type="checkbox" class="classB">
</body>
</html>