How to target specific wp_nav_menu in function?

Question

I am adding a specific class on my wp_nav_menu via function.php but I am not able to target a specific menu: This is what I got

function add_menuclass_active         


        

Answer 1

Theme location is stored in the nav menu arguments, you need to add it in your function parameters:

function add_menuclass_active( $nav_menu, $args ) {
    if( $args->theme_location == 'CUSTOM MENU' )
        return preg_replace( '/