I want to add two conditions to an if in JSTL, but it throws me an error.
<c:if test="${ISAJAX == 0 && ${ISDATE == 0}">
Compilation of JSP File '/WEB-INF/pages/index.jsp' failed:
homeafiliado.jsp: 792: 61: Syntax error in expression. Encountered "{".
I remain attentive, Regards.
Expression Language (EL, the content within ${} ) serves to parse expressions and convert them into Java code. You do not need to imbibe Him within Him. Your expression can be corrected by removing the ${} internal.
It should look like this:
<c:if test="${ISAJAX == 0 && ISDATE == 0}">
You can even rewrite it in a simpler way to understand:
<c:if test="${ISAJAX eq 0 and ISDATE eq 0}">
The UEL processor only processes what is inside a construction ${...} .
Solution: The whole expression must be inside the keys.
<c:if test="${ISAJAX == 0 && ISDATE ==0}"/> <!-- CORRECTO -->
Avoid even leaving blank spaces outside the keys,
<c:if test="${ISAJAX == 0 && ISDATE ==0} "/> <!-- Error, porque a test se le asignará "false " o "true " (espacio en blanco al final)-->
because both "true " and "false " are converted to false ( link )