<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>js</title>
</head>
<script language="javascript">
function aa(){
var r=document.getElementsByName("r");
for(var i=0;i<r.length;i++){
if(r[i].checked){
alert(r[i].value+","+r[i].nextSibling.nodeValue);
}
}
}
</script>
<body>
<form name="form1" method="post" action="">
<input type="checkbox" name="r" value="1">a<br>
<input type="checkbox" name="r" value="2">b<br>
<input type="checkbox" name="r" value="3">c<br>
<input type="checkbox" name="r" value="4">d<br>
<input type="checkbox" name="r" value="5">e<br>
<input type="checkbox" name="r" value="6">f<br>
<input type="checkbox" name="r" value="7">g<br>
<input type="checkbox" name="r" value="8">h<br>
<input type="checkbox" name="r" value="9">i<br>
<input type="checkbox" name="r" value="10">j<br>
<br>
<input type="button" onclick="aa()" value="button">
</form>
</body>
</html>
解释：
nextSibling是获得当前对象的下一个对象
nodeValue是返回一个节点的值