条件构造

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<c:if   test= "${haveMenus   !=   null} ">          
<c:forEach   var= "menu "   items= "${haveMenus} ">
<script   type= "text/javascript ">
var   name   =    "${menu} "; 
selectRoleHaveMenus(name);  
</script>
</c:forEach>
</c:if>