ajax获取页面历史记录内容

<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/1.6.4/jquery.min.js"></script><script>     var referaaa=document.referrer;     $.ajax({        type:'get',         url: "/index.php",     data: {url:referaaa},      dataType: "text",     success:function(data){                   $("#page-bd").html(data);          },          error:function(jqXHR){    alert("发生错误：" + jqXHR.status);    }        });  </script> 

<div id="page-bd"></div>

index.php

<?php$url =$_GET['url'];echo $url;?>