jquery - 圆形动画汉堡菜单未打开菜单项
问题描述
Ì 找到了一个很酷的脚本来显示“圆形动画”汉堡菜单,请参阅https://jsfiddle.net/sigug/5ohmne6g/25/ 我有一个 ul 菜单项列表,它们目前不显示,因为它们是“显示:无”。当我删除它时,它们就在那里(显然)。现在如何使用单击菜单时弹出的动画“圆圈”来显示它们?由于它们是动画的“外部”,是否只能在“之后”或其他什么中淡化它们?
HTML
<div class="menu"><button class="nav-tgl" type="button" aria-label="toggle menu"><span aria-hidden="true"></span></button>
<nav class="nav">
<ul>
<li>element one</li>
<li>element two</li>
<li>element three</li>
<li>element four</li>
</ul>
</nav>
</div>
CSS
.cd-nav-trigger {
top: 18px;
right: 5%;
height: 44px;
width: 44px;
z-index: 5;
/* image replacement */
overflow: hidden;
text-indent: 100%;
white-space: nowrap;
}
.cd-overlay-nav, .cd-overlay-content {
/* containers of the 2 main rounded backgrounds - these containers are used to position the rounded bgs behind the menu icon */
position: fixed;
top: 18px;
right: 5%;
height: 4px;
width: 4px;
transform: translateX(-20px) translateY(20px);
}
.cd-overlay-nav span, .cd-overlay-content span {
display: inline-block;
position: absolute;
border-radius: 50%;
will-change: transform;
transform: scale(0);
}
.cd-nav-trigger .cd-icon {
/* icon created in CSS */
position: absolute;
left: 50%;
top: 50%;
bottom: auto;
right: auto;
transform: translateX(-50%) translateY(-50%);
display: inline-block;
width: 18px;
height: 3px;
background-color: #ffffff;
z-index: 10;
}
.cd-nav-trigger .cd-icon::before, .cd-nav-trigger .cd-icon:after {
/* upper and lower lines of the menu icon */
position: absolute;
top: 0;
right: 0;
width: 100%;
height: 100%;
background-color: inherit;
transition: transform .3s;
}
.cd-nav-trigger .cd-icon::before {
transform: translateY(-6px) rotate(0deg);
}
.cd-nav-trigger .cd-icon::after {
transform: translateY(6px) rotate(0deg);
}
.cd-nav-trigger.close-nav .cd-icon {
/* user clicks on the .cd-nav-trigger element - transform the icon */
background-color: rgba(255, 255, 255, 0);
}
.cd-nav-trigger.close-nav .cd-icon::before, .cd-nav-trigger.close-nav .cd-icon::after {
background-color: white;
}
.cd-nav-trigger.close-nav .cd-icon::before {
transform: translateY(0) rotate(45deg);
}
.cd-nav-trigger.close-nav .cd-icon::after {
transform: translateY(0) rotate(-45deg);
}
.cd-nav-trigger::before, .cd-nav-trigger::after {
/* 2 rounded colored backgrounds for the menu icon */
position: absolute;
top: 0;
left: 0;
border-radius: 50%;
height: 100%;
width: 100%;
transition-property: transform;
}
.cd-nav-trigger::before {
background-color: #091d23;
transform: scale(1);
transition-duration: 0.3s;
transition-delay: 0.4s;
}
.cd-nav-trigger::after {
background-color: #ffb441;
transform: scale(0);
transition-duration: 0s;
transition-delay: 0s;
}
.cd-nav-trigger.close-nav::before {
/* user clicks on the .cd-nav-trigger element - 1st rounded background disappears */
transform: scale(0);
}
.cd-nav-trigger.close-nav::after {
/* user clicks on the .cd-nav-trigger element - 2nd rounded background appears */
transform: scale(1);
transition-duration: 0.3s;
transition-delay: 0.4s;
}
jQuery
const menu = document.querySelector('.menu');
const btn = menu.querySelector('.nav-tgl');
btn.addEventListener('click', evt => {
menu.classList.toggle('active');
})
``
解决方案
您可以使用仅包含“显示:无”的单独类并将其添加到脚本开头的列表中。根据我的经验,切换未硬编码到 HTML 中元素的类总是更容易。然后,您只需使用 JQUERY 选择元素并从按钮菜单中单独切换新类,如下所示:
查询:
const menu = document.querySelector('.menu');
const btn = menu.querySelector('.nav-tgl');
$('.nav ul').addClass("hidden");
btn.addEventListener('click', evt => {
menu.classList.toggle('active');
$('.nav ul').toggleClass("hidden");
})
CSS:
.hidden {
display: none;
}
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