var str="";
$("input[name='newsletter']").each(function(){
if(this.checked)
str+=$(this).val()+",";
})
alert(str);
$("input[name='newsletter']").each(function(){
if(this.checked)
str+=$(this).val()+",";
})
alert(str);
转载于:https://www.cnblogs.com/shizhi57/archive/2011/07/01/2095223.html