复制代码 代码如下:

<script type="text/javascript">

if(self!=top){top.location=self.location;}

var ref=document.referrer;

var domains=new Array("jb51.net/","jb51.cn/","jb51.com.cn/");

var refpass=false;

for(i=0;i<=domains.length;i++){if(ref.indexOf(domains[i])>0){refpass=true;break;}}

if(ref==""){refpass=true}

if(!refpass){window.location.href='http://www.jb51.net';}

</script>

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复制代码 代码如下:

<script>

function isMatch(str1,str2)

{

var index = str1.indexOf(str2);

if(index==-1) return false;

return true;

}

alert(window.location.hostname);

if (isMatch(window.location.hostname,'www.jb51.net') == false){window.location.href="http://www.jb51.net";}

</script>

下面我们一个网站开发中用到的

复制代码 代码如下:

function gotourl()

{

var url = "http://www.jb51.net";

var localurl = document.url;

if( localurl.substring(0,url.length) != url )

{

location.href=url;

}

}

gotourl();