When we write in a Javascript expression :
expression < <%=variableJsp%>
the double "<" seems to be a problem and the JSP is not interpreted ?
Is it a fault of the other servers that should not accept this type of expression ? Or WebSphere that bugs ?
I find it generally a bad idea to inline javascript on jsp pages.Your problem is only one of the reasons to make javascript functions external.
Although I do not know websphere, this has happened to me on other containers.
If you insist on keeping it inline, you can probably use
expression < <%=variableJsp%>
Your small code-sample looks like something we do without problems.
Try creating a JSP that illustrates the problem, and nothing else. Either create a new from scratch, or remove everything not relevant to the problem.
Chances are, you will find that the error is not in your code-sample. But if you can make a small JSP-file (a few lines) that illustrates the problem, please show it to us.