jstl判空出错，script没有反应

 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">    
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
  </head>

  <body>
    <form action="login" method="post">
        账号：<input type="text" name="userName"/><br/>
        密码：<input type="text" name="passWord"/><br/>
        <input type="submit" value="登录"/>
    </form>
    <c:if test="${empty message} }">
        <script type="text/javascript">
            alert('${message}');
        </script>
    </c:if>
  </body>
</html>

script没有效果？求大神解答

script代码块要写在script标签中

此处写javascript代码

 <script type"text/javascript"> 此处添加javascript代码块</script>

这里是不是多了个}了？？

  <c:if test="${empty message} }">

         <script type="text/javascript">
            alert('${message}');
        </script>

message有什么内容？如果包含单引号会导致字符串不闭合报错，自己将单引号替换为实体对象

 &apos;