在使用()%＞时遇到的错误

正确代码： window.location.href = “<%=request.getContextPath()%>/dept/delete?deptno=” dno; 或 window.location.href = “<%=request.getContextPath()%>” “/dept/delete?deptno=” dno;

错误代码： window.location.href = <%=request.getContextPath()%> “/dept/delete?deptno=” dno;