js中使用el表达式和java脚本

<script type="text/javascript">
var CONTEXT_PATH = '<%=_contextPath%>';
var loginUrl = CONTEXT_PATH+'/${tag}';
function toHomePage(){
window.location.href = CONTEXT_PATH+'/investQueryAction.do?action=queryOverview';
}
function toLoginPage(){
top.location.href = CONTEXT_PATH+'/${tag}';
}
var defStartDate = '${defStartDate}';
var defEndDate = '${defEndDate}';
var vCssBranchID ='${sessionScope.BRANCH_ID}';

</script>

如上所见，只要在el表达式的两边或者java脚本加上引号，就可以使用