五种方法实现js跳转

第一种：   

<script language="javascript" type="text/javascript">          

window.location.href="login.jsp?backurl="+window.location.href;    

</script>

第二种：   

<script language="javascript"> 

alert("返回"); 

window.history.back(-1);  

</script>

第三种：  

<script language="javascript"> 

window.navigate("top.jsp"); 

</script>

第四种：  

<script language="JavaScript">         

self.location='top.htm';  

</script>

第五种：  

<script language="javascript">         

alert("非法访问！");         

top.location='xx.jsp';  

</script>