js 调用 jsp注意点

例如 要调用的jsp为
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
  String strStyle=request.getParameter("style");
  String siteId = request.getParameter("cid")==null?"":request.getParameter("cid");
  String requrl = request.getRequestURL().toString();
  requrl = requrl.substring(0,requrl.lastIndexOf("/"));
  String prevDir = requrl.substring(0,requrl.lastIndexOf("/")+1);
  requrl += "/siteCounter.jsp";
  String linkTo = prevDir+"adminCounter/counter_admin.jsp";
  String img = prevDir+"images/05count.gif";
 %>
document.write ("<a target='blank' href='<%=linkTo%>' >");
document.write("<img src='<%=img %>' border='0' width='73' height='14' />");
document.write("<script type='text/javascript' src='<%=requrl%>?style=<%=strStyle%>&screenwidth=" + screen.width + "&screenheight="+screen.height+"&cid=<%= siteId%>' >");
document.write("</script></a>");
document.write("<script type='text/javascript'>alert('ok');</script>");

在html中调用它
<script type="text/javascript" src="http://localhost:505/kefu/visitCounter/webCounter/mycount.jsp"></script>
</body>
注意点：
1.单引号，双引号问题。
2.<script></script>要成对使用
3.jsp中不能有out.**()语句。
4.js中引用jsp非字符串变量要注意toString()转换。