大侠们,我想实现的是,用户下单,后台提示订单。用了js的定时器,但发现在里面加了java代码后,就不会定时了,要手动刷新,以下是代码片段:
<%! int c;%>
<script>
var count;
function order_tip(){
var element = document.getElementById("tip");
<%
if(application.getAttribute("messagelist")==null){
c = 0;
}else{
List messagelist = (List)application.getAttribute("messagelist");
c = messagelist.size();
}
%>
count = <%=c%>;
if(count != 0){
element.style.visibility = "visible";
element.innerHTML = "有 "+count+" 条新的订单!";
}else{
element.innerHTML = "0";
count = 0;
//element.style.visibility = "hidden";
}
}
setInterval(order_tip,500);
</script>
<div id="tip">0</div>
请问为什么加了java就不会刷新了,如果要用ajax,可以给出简单的代码吗?没怎么学ajax~~求解,谢谢了