jsp文件里的代码：
<SCRIPT>
var title = '<%=request.getAttribute("pageTitle"
%>';
var upsrc = "<%=request.getAttribute("url"
%>";
window.onload = window_onload;
function window_onload () {
if (invoiceManageId!="null"
{
var invoiceManageId = '<%=request.getAttribute("invoiceManageId"
%>';
alert("invoiceManageId = ",invoiceManageId);
upsrc = upsrc + "&invoiceManageId=" + invoiceManageId;
document.getElementById("nextpage"
.src = upsrc;
}else{
var areaId = '<%=request.getAttribute("areaId"
%>';
alert("areaId = ",areaId);
upsrc = upsrc + "&areaId=" + areaId;
document.getElementById("nextpage"
.src = upsrc;
}
}
</SCRIPT>
－－－－－－－－－－－－－－－－－－－－－－－
action里的相关代码：
if (request.getParameter("pageFlag"
.equals("modify"
) {
request.setAttribute("invoiceManageId",request.getParameter("invoiceManageId"
);
} else {
request.setAttribute("invoiceManageId","null");
request.setAttribute("areaId",request.getParameter("areaId"));
}
－－－－－－－－－－－－－－－－－－
在页面上，当invoiceManageId为null是，还是执行的if里的语句。
请大虾们帮我看看我jsp页面的那段代码哪边写的是不是有什么问题呀。
谢谢指导。
