We'll create fresh WordPress site with WP-REST-API Menus installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin adds “routes” or “endpoints” to WP REST API that allows for retrieval of
menu data as JSON.
Updated port of “WP-REST-API V2 Menus” by Claudio La Barbera (http://www.claudiolabarbera.com)
Usage
Get all registered menus:
GET /wp-menus/v1/menus
https://yourwpsite.com/wp-json/wp-menus/v1/menus
Get menu data as JSON from menu slug:
GET /wp-menus/v1/menus/{slug}
https://yourwpsite.com/wp-json/wp-menus/v1/menus/{slug}
Gets the contents of a registered menu by its “slug”.
When assigning a menu a location in /wp-admin/nav-menus.php?action=locations
the slug is the name of the menu in lowercase and without any spaces like a post slug.
If your menu name is Main Menu:
https://yourwpsite.com/wp-json/menus/v1/wp-menus/main-menu