我有一个问题，我有一个菜单与父菜单项，如果有一个子菜单上点击它切换嵌套的ul。
现在，我有2个，问题是当我把它放在foreach中时，它会切换这两个子菜单，而不是当前单击的父项子菜单。
我怎样才能告诉JS只从单击的元素切换div？

• • 在WordPress中的PHP：**

<?php
function main_navigation() {
    $menu_name      = 'main_menu';
    $locations      = get_nav_menu_locations();
    $menu           = wp_get_nav_menu_object( $locations[ $menu_name ] );
    $menu_items     = wp_get_nav_menu_items( $menu->term_id, array( 'order' => 'ASC' ) );
    $count          = 0;
    $sub_menu       = false;
?>

<ul class="header__list">
    <?php
    foreach( $menu_items as $item ):

        $link           = $item->url;
        $title          = $item->title;
        $class          = $item->classes[0];

        // item does not have a parent so menu_item_parent equals 0 (false)
        if ( !$item->menu_item_parent ):

        // save this id for later comparison with sub-menu items
        $parent_id = $item->ID;
    ?>

    <li class="header__item">
        <a href="<?php echo $link; ?>" class="header__link <?php echo $class ?>"><?php echo $title; ?></a>

        <?php endif; ?>

        <?php if ( $parent_id == $item->menu_item_parent ): ?>

            <?php if ( !$sub_menu ): $sub_menu = true; ?>
            <ul class="header__sub-list" aria-role="header-sublist">
            <?php endif; ?>

                <li class="header__sub-item">
                    <a href="<?php echo $link; ?>" class="header__sub-link"><?php echo $title; ?></a>
                </li>

            <?php if ( $menu_items[ $count + 1 ]->menu_item_parent != $parent_id && $sub_menu ): ?>
            </ul>
            <?php $sub_menu = false; endif; ?>

        <?php endif; ?>
    </li>

<?php
$count++;
endforeach;
?>

</ul>
<?php
}

• • 联属萨摩亚**

const headerSubLists = document.querySelectorAll('.header__link-sub');

headerSubLists.forEach((headerSubList) => {
    const headerSubMenu = document.querySelectorAll(
        '[aria-role="header-sublist"]'
    );

    const openSubMenu = (e) => {
        e.preventDefault();

        headerSubMenu.forEach((menu) => {
            menu.classList.toggle('is-open');
        });
    };

    headerSubList.addEventListener('click', openSubMenu);
});