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Editorial Team
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Asked: 2026-06-11T19:07:21+00:00

I want to call a javascript function when flow enters into <c:if> block. For

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I want to call a javascript function when flow enters into <c:if> block.

For example, I have below code:

<c:if test="${!empty errorMessage && !(fn:contains(errorMessage, 'generic'))}">
    <span> errorError occured<br />
    </span>
</c:if>

I need to invoke a JS function only when this <c:if> is true.

Please suggest how to achieve this.

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1 Answer

  1. Editorial Team

    You can include the <script> tag within the <c:if> block, something like this:

    <c:if test="${!empty errorMessage && !(fn:contains(errorMessage, 'generic'))}">
    <span>
        errorError occured<br />
    </span>
    <script>
        alert("Calling my function ...");
        myFunction(); // this is a call to your function which must be defined in the <head> section or another JS file.
    </script>
</c:if>

    Hope this helps.

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