在与移动导航的第一次互动中,它将按预期打开和关闭,但之后的任何内容都会出现错误。它将立即开始打开和关闭,或者链接将显示为奇怪的订单。
我需要的是移动导航首先从右向左打开,让每个链接级联到视图中,从关于一直到博客,然后我希望它在离开时反转图。
现在我没有为反向实现逻辑,但我需要在开始之前解决这个问题。
const bars = document.querySelector('.fa-bars');
bars.addEventListener('click', () => {
const navItemsContainer = document.querySelector('.navbar__links-container');
const navItems = document.querySelectorAll('.navbar__links-container__item');
const sleep = ms => {
return new Promise(resolve => {
setTimeout(() => {
return resolve();
}, ms);
});
};
const startNavAnimation = async () => {
let count = 0;
for (let item of navItems) {
if (item.classList.contains('navbar__links-container__item--show')) {
setTimeout(() => {
item.style.transitionDelay = `${ count }s`
item.classList.remove('navbar__links-container__item--show');
count += .15;
}, count);
}
else {
item.style.transitionDelay = `${ count }s`
item.classList.add('navbar__links-container__item--show');
count += .15;
}
}
};
if (navItemsContainer.classList.contains('navbar__links-container--open')) {
navItems[ navItems.length - 1 ].addEventListener('transitionend', () => {
navItemsContainer.classList.remove('navbar__links-container--open');
});
}
else {
navItemsContainer.classList.add('navbar__links-container--open');
}
startNavAnimation();
});
body {
margin: 0;
}
.navbar {
background: #f2f2f2;
display: flex;
flex-wrap: wrap;
}
.navbar__mobile-container {
display: flex;
justify-content: space-around;
width: 100%;
}
.fa-bars {
cursor: pointer;
}
.navbar__links-container {
background: inherit;
display: flex;
flex-direction: column;
align-items: flex-end;
list-style: none;
margin: 0;
overflow: hidden;
padding: 0;
position: absolute;
top: 20px;
left: 100%;
transition: left .25s, width .25s;
width: 0%;
}
.navbar__links-container__item {
left: 52px;
margin-bottom: 1rem;
position: relative;
transition: left .25s;
width: auto;
}
.navbar__links-container--open {
left: 0;
width: 100%;
}
.navbar__links-container__item--show {
left: -63px;
}
<nav class="navbar">
<div class="navbar__mobile-container">
<div class="navbar__logo-container">
<a class="navbar__logo-container__logo">BB</a>
</div>
<div class="navbar__hamburger-container">
<i class="fas fa-bars">MENU</i>
</div>
</div>
<ul class="navbar__links-container">
<li class="navbar__links-container__item">
<a class="navbar__links-container__item__link">About</a>
</li>
<li class="navbar__links-container__item">
<a class="navbar__links-container__item__link">Portfolio</a>
</li>
<li class="navbar__links-container__item">
<a class="navbar__links-container__item__link">Blog</a>
</li>
</ul>
</nav>
if
事件处理程序中的第一个bars
语句。有关等待transitionend
事件的方式,但startNavAnimation
未被调用。答案 0 :(得分:1)
有两个问题。
isOpen
标志。 https://codepen.io/Jason_B/pen/jzGwQX?editors=0010
我喜欢使用类,并且您的代码显示您也这样做,因此您可能希望拥有一个开放状态类和一个可见性类。