If you need a 3 level, Multi-level Accordion menu, in your WordPress website, here is the solution.
Use this WordPress menu anywhere in post, page and widget using shortcode with your menu name like this > [ pim_accordion_menu menu=’Main’ ].
While creating menu links in WordPress, make sure you use custom links and provide named anchors like #link1, #link2 etc otherwise if you click the any menu item, it will take you that page.
I have included both js and css in the shortcode output for the sake of simplicity, but you can take them out and place outside. Here is the look and screenshot of Accordion Menu. You also need to link font awesome for arrows or just install WordPress Plugin Font Awesome if it is not already included in your theme.
Here is the gist of this multi level WordPress select menu, add this in your functions.php or code snippet plugin:
Hope that helps.
