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Asked: 2026-06-13T15:10:01+00:00

I may have the wrong idea of the relation of the JSF expression language

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I may have the wrong idea of the relation of the JSF expression language to javaScript.
What I’m trying to do is nesting a bit of JSF EL in js in JSF EL. Which should look something like this:

<h:commandLink onclick="#{ condition ? 'jsFunction('#{bean.property}delimiter#{bean.prop2}')' :''}" action="...

obviously this does not work, so how do you nest a bit of JSF EL in js in JSF EL?

ps.: I know I could make two commandlinks and move the condition into the “rendered” attribute but I want to understand the relation of this conjunction.

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1 Answer

  1. Editorial Team

    You can’t nest EL expressions nor concatenate strings in EL expressions. You’ve also a JS syntax error by closing the function call with } instead of ).

    Prepare the nested expression beforehand with <c:set> wherein you can just inline the desired expression in the resultant string value:

    <c:set var="jsFunction" value="jsFunction('#{bean.property}delimiter#{bean.prop2}')" />

    This way you can just print it as follows:

    <h:commandLink ... onclick="#{condition ? jsFunction : ''}" />
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