javascript - 单击菜单项后恢复汉堡包动画

Question

我目前正在建立一个包含汉堡菜单的一页网站。菜单由链接到该页面上特定标签的列表元素组成。

我只有一个问题，那就是将汉堡图标动画(点击时变成十字)恢复到正常状态。

代码如下:

$('#toggle').click(function() {
$(this).toggleClass('active');
$('#overlay').toggleClass('open').show();
});

$('#overlay li').on('click', function(){
$('#overlay').hide();
$('#toggle').removeClass("active");
});

@import url('https://fonts.googleapis.com/css?family=Varela+Round');

.container p {
  font-size: 20px;
}
.container a {
  display: inline-block;
  position: relative;
  text-align: center;
  color: #1abc9c;
  text-decoration: none;
  font-size: 20px;
  overflow: hidden;
  top: 5px;
}
.container a:after {
  content: '';
  position: absolute;
  background: #1abc9c;
  height: 2px;
  width: 0%;
  transform: translateX(-50%);
  left: 50%;
  bottom: 0;
  transition: .35s ease;
}
.container a:hover:after, .container a:focus:after, .container a:active:after {
  width: 100%;
}

h1 {
  position: relative;
  text-align: center;
  font-family: 'Varela Round', serif;
}

.button_container {
  position: fixed;
  top: 5%;
  right: 2%;
  height: 27px;
  width: 35px;
  cursor: pointer;
  z-index: 100;
  transition: opacity .25s ease;
}

.button_container:hover {
  opacity: .7;
}
.button_container.active .top {
  transform: translateY(11px) translateX(0) rotate(45deg);
  background: #FFF;
}
.button_container.active .middle {
  opacity: 0;
  background: #FFF;
}
.button_container.active .bottom {
  transform: translateY(-11px) translateX(0) rotate(-45deg);
  background: #FFF;
}
.button_container span {
  background: #fd7014;
  border: none;
  height: 5px;
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  transition: all .35s ease;
  cursor: pointer;
}
.button_container span:nth-of-type(2) {
  top: 11px;
}
.button_container span:nth-of-type(3) {
  top: 22px;
}

.overlay {
  position: fixed;
  background: #1a1a1a;
  top: 0;
  left: 0;
  width: 100%;
  height: 0%;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s, visibility .35s, height .35s;
  overflow: hidden;
}
.overlay.open {
  opacity: .9;
  visibility: visible;
  height: 100%;
}
.overlay.open li {
  animation: fadeInRight .5s ease forwards;
  animation-delay: .35s;
}
.overlay.open li:nth-of-type(2) {
  animation-delay: .4s;
}
.overlay.open li:nth-of-type(3) {
  animation-delay: .45s;
}
.overlay.open li:nth-of-type(4) {
  animation-delay: .50s;
}
.overlay nav {
  position: relative;
  height: 70%;
  top: 50%;
  transform: translateY(-50%);
  font-size: 30px;
  font-family: 'Varela Round', sans-serif;
  font-weight: 400;
  text-align: center;
}
.overlay ul {
  list-style: none;
  padding: 0;
  margin: 0 auto;
  display: inline-block;
  position: relative;
  height: 100%;
}
.overlay ul li {
  display: ;
  height: 25%;
  height: calc(100% / 4);
  min-height: 50px;
  position: relative;
  opacity: 0;
}
.overlay ul li a {
  display: ;
  position: relative;
  color: #fd7014;
  text-decoration: none;
  overflow: hidden;
}
.overlay ul li a:hover:after, .overlay ul li a:focus:after, .overlay ul li a:active:after {
  width: 100%;
}
.overlay ul li a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0%;
  transform: translateX(-50%);
  height: 3px;
  background: #FFF;
  transition: .35s;
}

@keyframes fadeInRight {
  0% {
    opacity: 0;
    left: 20%;
  }
  100% {
    opacity: 1;
    left: 0;
  }
}

<div id="toggle" class="button_container">
      <span class="top"></span>
      <span class="middle"></span>
      <span class="bottom"></span>
    </div>
    
    <div id="overlay" class="overlay">
        <nav class="overlay-menu">
            <ul>
            <li class="overlay-li"><a href="#">portfolio</a></li>
            <li><a href="#">services</a></li>
            <li><a href="#">about</a></li>
            <li><a href="#">contact</a></li>
            </ul>
        </nav>
    </div>

有谁知道如何解决这个问题吗？

Answer 1

我的声誉没有超过 50，所以无法解决您在评论中的问题，...

您只是忘记在单击 li 时切换叠加层的“打开”类别所以只需在您的 li click 函数中添加以下行

$('#overlay').toggleClass('open');

http://jsbin.com/faquzisobi/2/edit?html,css,js,output

其他一切似乎都很好。 :)