我首先要实现的是测试“li”是否嵌套了“ul”,如果是,则在单击时显示嵌套的“ul”。这运作良好;但是,if 语句对每个“li”都返回 true,而不仅仅是那些有子“ul”的语句。这意味着没有子菜单的链接不起作用,因为 e.preventDefault() 被调用。
感谢帮助!
$('.main_nav').on('click', 'a', function(e) {
if( $(this).parent().has('ul') ) {
e.preventDefault();
$(this).parent().children('ul').toggle( 800, 'easeOutQuint', function() {
$(this).closest('li').toggleClass('open dropdown');
}).closest('li').siblings('.open').toggleClass('open dropdown').children('ul').hide('fast');
}
});
<nav class="main_nav" role="navigation" aria-label="Primary Menu">
<ul id="menu-main" class="menu"><li id="menu-item-7" class="menu-item menu-item-type-post_type menu-item-object-page current-menu-item page_item page-item-4 current_page_item menu-item-7"><a href="http://projectbiketech.dev/">Home</a></li>
<li id="menu-item-22" class="dropdown menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-22"><a href="http://projectbiketech.dev/about/">About</a>
<ul class="sub-menu">
<li id="menu-item-61" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-61"><a href="http://projectbiketech.dev/about/team/">Team</a></li>
<li id="menu-item-60" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-60"><a href="http://projectbiketech.dev/about/board-of-directors/">Board of Directors</a></li>
<li id="menu-item-59" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-59"><a href="http://projectbiketech.dev/about/advisory-board/">Advisory Board</a></li>
<li id="menu-item-58" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-58"><a href="http://projectbiketech.dev/about/friends-of-pbt/">Friends of PBT</a></li>
</ul>
</li>
<li id="menu-item-25" class="dropdown menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-25"><a href="http://projectbiketech.dev/programs/">Programs</a>
<ul class="sub-menu">
<li id="menu-item-65" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-65"><a href="http://projectbiketech.dev/programs/bike-tech-in-school/">Bike Tech In School</a></li>
</ul>
</li>
<li id="menu-item-28" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-28"><a href="http://projectbiketech.dev/chapters/">Chapters</a></li>
<li id="menu-item-31" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-31"><a href="http://projectbiketech.dev/media/">Media</a></li>
<li id="menu-item-34" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-34"><a href="http://projectbiketech.dev/support/">Support</a></li>
<li id="menu-item-37" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-37"><a href="http://projectbiketech.dev/contact/">Contact</a></li>
</ul> </nav><!-- .main_navigation -->