Title: Dynamic Sub Menu Width – jQuery error Last modified: July 12, 2019 --- # Dynamic Sub Menu Width – jQuery error * Resolved [up660959](https://wordpress.org/support/users/up660959/) * (@up660959) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/) * I have followed the [https://www.megamenu.com/documentation/adjust-sub-menu-width/](https://www.megamenu.com/documentation/adjust-sub-menu-width/) guide to add dynamic sub menu width to my mega menu. * After saving the changes. I navigate to my page. And the page does not load at all. When I open the console I can see lots of the below error. * “Uncaught RegerenceError: jQuery is not defined” * Clicking into these errors I can see that a carousel part of the page that the theme uses is using jQuery and throwing these errors. * If I go back to Word Press and remove the class from the panel width – outer width setting then the page loads just fine. Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Author [megamenu](https://wordpress.org/support/users/megamenu/) * (@megamenu) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11732102) * Hi up660959, * Please can you post a link to your site so I can take a look? * Thread Starter [up660959](https://wordpress.org/support/users/up660959/) * (@up660959) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11732126) * Hi MegaMenu, * It is my companies staging site which is currently behind username/password so unable to share with you on this forum. Unless there is another way? * From my testing this morning I have found that If I disable the W3 Total Cache plugin then the menu’s sub menu behaves dynamically and extends to the specified selector * Thread Starter [up660959](https://wordpress.org/support/users/up660959/) * (@up660959) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11732182) * Just performed some further tests. * The site is currently using the LeadEngine Theme. * From what I have found I have narrowed the problem down to the Minify option within W3 total cache. * **When it is enabled ** – The dynamic sub menu width option does not work and the sub menu only extends to the length of the menu itself * **When it is disabled** – The dynamic sub menu width works as described in option 3 on [https://www.megamenu.com/documentation/adjust-sub-menu-width/](https://www.megamenu.com/documentation/adjust-sub-menu-width/) * -However with Minify disabled the ‘Meet the team’ section of the theme breaks, which I need to be working. * Is there anything else I can try? * Plugin Author [megamenu](https://wordpress.org/support/users/megamenu/) * (@megamenu) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11732322) * Hi up660959, * Is there an option in w3totalcache to exclude a file from being minified? If so, try adding the maxmegamenu.js file to that list (you might need to find the full url to that file by inspecting your page source). * Alternatively you could try a different caching plugin, I know we have a lot of users who use Autoptimize. * Thread Starter [up660959](https://wordpress.org/support/users/up660959/) * (@up660959) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11762547) * Thanks for the response. I am still trying to troubleshoot this issue. Do you know what the relative file paths of the Mega Menu files will be (or how I can find this out) so that I can add them to the exclusion list. * Plugin Author [megamenu](https://wordpress.org/support/users/megamenu/) * (@megamenu) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11762800) * Hi up, * Try: * `/wp-content/plugins/megamenu/js/maxmegamenu.js` * (You can disable your caching plugin, then view the page source and you should be able to find the paths) * I would advise trying a different plugin like Autoptimize, which is like a more modern version of w3 total cache. * Regards, Tom * Thread Starter [up660959](https://wordpress.org/support/users/up660959/) * (@up660959) * [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11777280) * Hi, * This is now resolved. * Turns out there was two performance plugins running. * I turned one off and then excluded the maxmega menu file. * Thanks for your support Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘Dynamic Sub Menu Width – jQuery error’ is closed to new replies. * ![](https://ps.w.org/megamenu/assets/icon-128x128.png?rev=1489843) * [Max Mega Menu](https://wordpress.org/plugins/megamenu/) * [Frequently Asked Questions](https://wordpress.org/plugins/megamenu/#faq) * [Support Threads](https://wordpress.org/support/plugin/megamenu/) * [Active Topics](https://wordpress.org/support/plugin/megamenu/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/megamenu/unresolved/) * [Reviews](https://wordpress.org/support/plugin/megamenu/reviews/) ## Tags * [dynamic menu](https://wordpress.org/support/topic-tag/dynamic-menu/) * [jquery](https://wordpress.org/support/topic-tag/jquery/) * [width](https://wordpress.org/support/topic-tag/width/) * 7 replies * 2 participants * Last reply from: [up660959](https://wordpress.org/support/users/up660959/) * Last activity: [6 years, 8 months ago](https://wordpress.org/support/topic/dynamic-sub-menu-width-jquery-error/#post-11777280) * Status: resolved