How to resolve "remove unused javascript" in wordpress website?

@annabell_mcdermott 

To resolve the "remove unused javascript" issue in a WordPress website, you can follow these steps:

1. Identify Unused JavaScript: Use a tool like Google PageSpeed Insights or GTmetrix to analyze your website and identify unused JavaScript files. These tools will provide suggestions on which files can be removed.
2. Backup Your Website: Before making any changes, it's always recommended to backup your website. You can use plugins like UpdraftPlus or manually backup your website files and database.
3. Remove Unused JavaScript Manually: Open your theme's functions.php file (Appearance > Theme Editor > functions.php) or use a child theme if you have one. Locate the wp_enqueue_script() function, which is used to enqueue JavaScript files. Remove the lines of code that reference the unused JavaScript files identified in the previous step.
4. Use a Plugin: If you are not comfortable editing code, you can use a plugin like "Flying Scripts" or "Asset CleanUp" to remove unused JavaScript files. These plugins provide an interface to selectively disable and remove unnecessary JavaScript files.
5. Minify and Combine JavaScript: Minifying and combining JavaScript files can improve website performance. Make sure to keep only the necessary JavaScript files and combine them using a plugin like "Autoptimize" or "Fast Velocity Minify". These plugins will optimize your JavaScript files by removing unnecessary characters and combining them into a single file.
6. Caching: Implement a caching solution like "W3 Total Cache" or "WP Super Cache". These plugins will create static HTML files of your website, reducing the need to load JavaScript files on every visit and improving overall performance.
7. Test Your Website: Once you have made the necessary changes, test your website using tools like Google PageSpeed Insights or GTmetrix. They will show you if all the unused JavaScript files have been successfully removed.

Remember to regularly update your WordPress theme, plugins, and check for any compatibility issues when removing JavaScript files to ensure your website functions correctly.