<script src="
http://code.jquery.com/jquery-1.9.1.js"></script>
<script>
$(function(){
$("#a1").click(function(){
var checkboxs = $(".check");
for(var i=0;i < checkboxs.length;i++){
if(checkboxs[i].checked)
alert(checkboxs[i].value);
}
});
$("#a2").click(function(){
var checkboxs = $(".check2");
for(var i=0;i < checkboxs.length;i++){
if(checkboxs[i].checked)
alert(checkboxs[i].value);
}
});
});
</script>
<body>
<ul>
<li id="li1">
<input type="checkbox" class="check" value="b1" >
<input type="checkbox" class="check" value="b2" >
<a id="a1" >选择1</a>
</li>
<li id="li2">
<input type="checkbox" class="check2" value="b3" >
<input type="checkbox" class="check2" value="b4" >
<a id="a2" >选择2</a>
</li>
</ul>
</body>