If you've encountered the issue where your custom HTML module in Joomla! displays JavaScript code as text instead of executing it, you're not alone. This problem can be caused by several factors, and resolving it requires a basic understanding of Joomla!'s settings and how this content management system (CMS) processes code inserted into modules. In this article, we'll explore several steps you can take to address this issue.

Overview of Possible Causes

Before diving into solutions, it's helpful to understand why Joomla! might display JavaScript as text. One of the most common causes is Joomla!'s security settings, which aim to prevent potential XSS (Cross-site scripting) attacks by filtering certain input code. Additionally, the issue may stem from improper code formatting or conflicts with some JavaScript libraries or jQuery.

Steps to Resolve

1. Enable JavaScript Execution in the Module

   • Navigate to the Joomla! administrator interface and open the settings of the module that displays JavaScript as text.
   • Ensure that HTML code processing is allowed in the module settings. You can find this setting in the module options under the "Advanced" tab or a similarly named section.

2. Disable Text Filters for Specific Users

   • Joomla! applies various text filters to different user groups. It's possible that your account has filters set up that prevent JavaScript execution.
   • In the administrator interface, go to "System" > "Global Configuration" > "Text Filters". Here, you can set filters for specific user groups to "No Filtering," which should allow JavaScript insertion.

3. Use Extensions for Code Embedding

   • There are Joomla! extensions specifically designed for embedding code, including JavaScript, into articles and modules without restrictions. These extensions, such as "Sourcerer" or "Custom HTML Advanced," allow you to insert any code directly into your module or article.

4. Verify and Modify the Code

   • Ensure that your JavaScript code is properly formatted and does not contain errors that could prevent its execution. Sometimes, it may be necessary to wrap the code in HTML <script></script> tags for proper processing.

5. Test for jQuery Conflicts

   • Joomla! and many of its extensions utilize the jQuery library, which can lead to conflicts. If your JavaScript code uses jQuery, make sure you're not using a version that conflicts with the one used in Joomla!.

Resolving the issue of a custom HTML module in Joomla! displaying JavaScript as text requires a systematic approach and understanding of CMS settings. By following the steps outlined above, you can effectively address this problem and ensure that your JavaScript code is properly executed within your modules. If the issue persists, it's recommended to consult the Joomla! community or a specialist who can offer more specific solutions.