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Joomla 6 Notice

We are pleased to announce that all our Joomla extensions have been compatible with Joomla 6 since October 14th, 2025.

For those currently upgrading from Joomla 3 to 4: Instructions for Joomla 4 migration can be found here:

There are standalone documentations Visforms Joomla 4, Visforms Joomla 5 and Visforms Joomla 6.

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Visforms Subscription user can ask questions in our forum. Please log in with the relevant user first.
Everybody can access the forum for reading.

Please only ask 1 question per topic.

Important information for almost every question:
V1: Which Visforms version is running?
V2: Which Joomla version is running?
V3: Which PHP version is running?

Uncaught TypeError

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8 years 2 months ago #5139 by brussell
Uncaught TypeError was created by brussell
New to this extension and have the following error:

visforms.js:642 Uncaught TypeError: jQuery(...).displayChanger is not a function
at HTMLDocument.<anonymous> (visforms.js:642)
at i (jquery.min.js?5462e5e7943a55ab8300789a3bb84290:2)
at Object.fireWith [as resolveWith] (jquery.min.js?5462e5e7943a55ab8300789a3bb84290:2)
at Function.ready (jquery.min.js?5462e5e7943a55ab8300789a3bb84290:2)
at HTMLDocument.K (jquery.min.js?5462e5e7943a55ab8300789a3bb84290:2)

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8 years 2 months ago #5140 by Administrator AV
Replied by Administrator AV on topic Uncaught TypeError
Hi,

this is the typical javascript error which you get, if you includes a jquery library in a not Joomla! conform way, while another extension, like Visforms uses the Joomla! conform way and then tries to use this jQuery object.. Mostly it is either the template iteself or another thirdparty extension, which you have installed on your website, that causes the problem.

If you check further you will certainly find that jquery is included on your website twice. One time with a link
Code:
<script src="/media/jui/js/jquery.min.js"></script>
which would be the Joomla! conform way and a second time with a link that might look something like that
Code:
<script src="/modules/mod_evo_frontpage_pro/library/jquery-1.8.3.min.js"></script>
which is not compatible with Joomla! and will break any Joomla! Core or extension javascript that tries to use jQuery, except of course the one extension, that has included this script.

Please check the following post, maybe it can help you fix the problem.
www.vi-solutions.de/en/forum-index/17-jo...ditional-fields#5070
Regards,
Aicha
:idea: I recommend you the new and up-to-date documentation for Joomla 6:
docs.joomla-6.visforms.vi-solutions.de/en/docs/
Please ask only 1 question per topic :-).

:idea: Ich empfehle Dir die neue und aktuelle Dokumentation für Joomla 6:
docs.joomla-6.visforms.vi-solutions.de/docs/
Bitte immer nur 1 Frage pro Thema stellen :-).

Moderators: Administrator AV, Administrator IV
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Visforms Extensions

Useful extensions for Visforms which enable you to integrate your forms perfectly into your website and to perform special tasks which turn Visforms into much more than just a form generator.

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