WordPress: wp_nav_menu – add class on UL?

We can use the wp_nav_menu to the parameters:

<?php
$args = array(
    'menu_class' => 'nav nav-tabs',
    'menu' => '(your_menu_id)'
);
wp_nav_menu( $args );
?>

The element, which in our case ‘ul’ tag, and than we can specify the class and then we can assign in the ‘menu_class’. And then the sample code is below:

wp_nav_menu( array(
    'theme_location' => 'top-menu',
    'container' => 'ul',
    'menu_class'=> '[add-your-class-here]'
) );

We have to add the class to the ul of wp_nav_menu. Use the code:

<?php
$defaults = array(
    'menu_class'      => 'menu',
    'items_wrap'      => '<ul id="%1$s" class="%2$s">%3$s</ul>',
);
wp_nav_menu( $defaults );
?>

As per the wordpress codex as were are changing the menu from ‘menu_class’ => ‘menu’, and also we can change the class of the ul , instead we can make the changes of the class of the div wrapping with the ul.

<?php 
$args = array(
    'menu_class' => 'nav nav-tabs',        
    'menu' => '(your_menu_id)'
);
wp_nav_menu( $args ); 
?>