The JSP 2.0 technology supports the usage of Expression Language (EL). With EL, it is easier to access applicaton variables using JavaBeans. EL also comes with expressions. The isELIgnored attribute value informs the container whether to evaluate or execute EL expression present in the JSP or not.
isELIgnored JSP is one of the 14 attributes JSP page directive supports.
If isELIgnored="true", the EL expressions are ignored.
If isELIgnored="false", the EL expressions are evaluated.
The default value for many Web servers is true. So, while using EL in JSP, this attribute should be set to false else not executed.