Add Dynamic Classes to Menu Items

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Add Dynamic Classes to Menu Items

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Understanding the Hook: nav_menu_css_class

The nav_menu_css_class filter allows you to dynamically add or modify CSS classes for navigation menu items.

Why Use This Hook?

  • Highlight active pages or categories.
  • Add dynamic styles based on user actions.

How It Works

Append or modify the $classes array for each menu item.

Code Example

function add_dynamic_menu_classes($classes, $item, $args, $depth) {
    if (is_single() && $item->title === 'Blog') {
        $classes[] = 'current-menu-item';
    }
    return $classes;
}
add_filter('nav_menu_css_class', 'add_dynamic_menu_classes', 10, 4);

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