JavaScript conflicts are one of the many errors that can trouble your Joomla website. Your website might face conflicts owing to PHP scripts, SQL database conflicts etc. You need to check the reason for conflict before you can identify a way to resolve it. You can hire Joomla developers to help identify the reason for conflict and help you resolve them.

1. How to Resolve JavaScript Conflicts on Your
Joomla Website?
JavaScripts are truly a mark of creating a site with well optimized elements.
While, it does provide ease in terms of performance as well as aesthetics, it
also has the capability to run down aJoomla based site or cause heavy damage
to it. One of the main reasons JavaScript might affect your website would be
conflicting scripts. Yes, if there are internal conflicts, it can very well damage
your website. In case the extensions you have loaded to your website use
different JS libraries or the different libraries have conflicting scripts, you run
trouble. Firstly, you need to identify the possible causes for such conflicts, and
then move on to detecting the conflicts, before you plan on resolving them.
Let's understand how such conflicts occur.
Causes of JS Conflicts

2. It is important for you, as a Joomla developer, to understand the nature and
possible causes of JavaScript conflicts. Using different Mootools library as well
as jQuery library, while building your website, can become a possible cause of
JavaScript conflict. In fact, the same version of these libraries, when built by
differentdevelopers, can also result in conflicts that can damage your website.
Conflicts also occur because of browsers. There is a possibility of conflict
between the JS script of your website as well as the JS script of the browser
website, while will result in issues for your website.
Detecting the Conflict
You know what the running causes of a JS conflict are; so now you need to
detect these conflicts, if any, on your website, and find ways to resolve them.
You should ideally run a check on the JavaScript console to identify the
conflicts. You can use tools like Firebug, Web Developer Toolbar, Debugger,
Error Console etc. to check for conflicts on Firefox and Chrome.
In case, your JS runs an error, then with the help of the error message that is
displayed, you can easily focus on the extension or feature on the website that
is the main cause for the problem. You will also see the name of the file that is
majorly responsible for the conflict to get started.
To know the extension that is responsible for this conflict, here are a few steps
that you can follow
 Switch back to default Joomla, disable the installed extensions, reload
the site and check for the JS conflicts and errors
 Publish back the disabled extensions one by one, and reload the website
after each installation is enabled
Resolving the Conflict
Once you have pinpointed the problem, it is time to focus on the solution. Let's
try and find a way to resolve the conflict that might be affecting your website.

3. JQuery in No-Conflict Mode
This is the ideal step that you should take to resolve conflicts. The entire
jQuery library and the related plug-ins are stored in the jQuery namespace.
Even the global objects are stored in the jQuery namespace. You should avoid
the conflicts that might occur between jQuery namespace and Mootools or
other such libraries. To avoid conflict, put the jQuery namespace to no-conflict
mode as soon as the page is loaded, and before getting started with the jQuery
on that particular page
<!-- Another way to putjQuery into no-conflict mode. -->
<scriptsrc="/prototype.js"></script>
<scriptsrc="/jquery.js"></script>
<script>
jQuery.noConflict();
jQuery(document).ready(function($ ){
// You can usethe locally-scoped $ in here as an alias to jQuery.
$( "div" ).hide();
});
// The $ variable in the global scope has the prototype.jsmeaning.
window.onload = function(){
var mainDiv = $("main" );
}
</script>
In case, you are unable to resolve the conflict by putting the jQuery in no-
conflict mode, you should try to seek help from the developer of the extension.
Conclusion
JavaScript conflicts are one of the many errors that can trouble your Joomla
website. Your website might face conflicts owing to PHP scripts, SQL database
conflicts etc. You need to check the reason for conflict before you can identify
a way to resolve it. You can hire Joomla developers to help identify the
reason for conflict and help you resolve them.

4. Original Source:
http://semaphoresoftware.kinja.com/how-to-resolve-javascript-
conflicts-on-your-joomla-webs-1714088313