css - 关闭导航菜单时未应用 CSS 过渡持续时间

Question

我正在创建一个全屏导航菜单，该菜单会在入口处向下滑动并弹跳。

但是，当再次单击我的菜单切换按钮以关闭全屏菜单时，它不会向后滑动，而是突然退出屏幕。

我添加transition: 2.5s到该nav.overlay属性以查看是否可以解决问题，但不幸的是，我无法让菜单在退出时滑出屏幕。

关于我可能遗漏的任何提示？

const menuToggle = document.querySelector('a.menu-toggle')
const navMenu = document.querySelector('nav.overlay')

document.addEventListener('click', function() {
  const clickEd = menuToggle.contains(event.target)

  if (clickEd) {
    navMenu.classList.toggle('bounce-in-top')
    menuToggle.classList.toggle('clicked')
  } else {
    navMenu.classList.remove('bounce-in-top')
    menuToggle.classList.remove('clicked')
  }
})

a.menu-toggle {
  position: fixed;
  top: 20px;
  left: 18px;
  z-index: 1000;
  max-width: 590px;
  height: 100%;
  transition: all 0.5s ease;
  cursor: pointer;
  transition-delay: 0.2s;
}

a.menu-toggle svg {
  width: 65px;
  transition: all 0.5s ease;
  /* transition-delay: 0.2s; */
}

a.menu-toggle.clicked svg {
  transform: rotate(45deg);
}

.bounce-in-top {
  -webkit-animation: bounce-in-top 1.1s both;
  animation: bounce-in-top 1.1s both;
}

@-webkit-keyframes bounce-in-top {
  0% {
    -webkit-transform: translateY(-90%);
    transform: translateY(-90%);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  38% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
  55% {
    -webkit-transform: translateY(-65px);
    transform: translateY(-65px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  72% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  81% {
    -webkit-transform: translateY(-28px);
    transform: translateY(-28px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  90% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  95% {
    -webkit-transform: translateY(-8px);
    transform: translateY(-8px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
}

@-webkit-keyframes bounce-in-top {
  0% {
    -webkit-transform: translateY(-90%);
    transform: translateY(-90%);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 1;
  }
  38% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
  55% {
    -webkit-transform: translateY(-65px);
    transform: translateY(-65px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  72% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  81% {
    -webkit-transform: translateY(-28px);
    transform: translateY(-28px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  90% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  95% {
    -webkit-transform: translateY(-8px);
    transform: translateY(-8px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
}

@keyframes bounce-in-top {
  0% {
    -webkit-transform: translateY(-500px);
    transform: translateY(-500px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
    opacity: 0;
  }
  38% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
    opacity: 1;
  }
  55% {
    -webkit-transform: translateY(-65px);
    transform: translateY(-65px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  72% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  81% {
    -webkit-transform: translateY(-28px);
    transform: translateY(-28px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  90% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
  95% {
    -webkit-transform: translateY(-8px);
    transform: translateY(-8px);
    -webkit-animation-timing-function: ease-in;
    animation-timing-function: ease-in;
  }
  100% {
    -webkit-transform: translateY(0);
    transform: translateY(0);
    -webkit-animation-timing-function: ease-out;
    animation-timing-function: ease-out;
  }
}

nav.overlay {
  transform: translateY(-100%);
  -webkit-transition: 2.5s;
  transition: 2.5s;
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
  top: 0;
  left: 0;
  background: red;
}


/* Position the content inside the overlay */

.overlay-content {
  position: relative;
  top: 25%;
  width: 100%;
  text-align: center;
  margin-top: 30px;
}


/* The navigation links inside the overlay */

.overlay a {
  padding: 8px;
  text-decoration: none;
  font-size: 36px;
  color: #fff;
  display: block;
  transition: 0.3s;
}

.overlay a:hover,
.overlay a:focus {
  color: #000;
}

<nav class="overlay">
  <div class="overlay-content">
    <a href="#">About</a>
    <a href="#">Services</a>
    <a href="#">Clients</a>
    <a href="#">Contact</a>
  </div>
</nav>
<a class="menu-toggle">
  <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 122 92" enable-background="new 0 0 122 92" xml:space="preserve">
      <g>
          <g>
              <line fill="#3B51A2" stroke="#EE5383" stroke-width="6" stroke-miterlimit="10" x1="59.81" y1="3.43" x2="59.81" y2="89.25"/>
              <line fill="#3B51A2" stroke="#EE5383" stroke-width="6" stroke-miterlimit="10" x1="19.18" y1="45.64" x2="105.32" y2="45.64"/>
          </g>
          <g>
              <line fill="#3B51A2" stroke="#000000" stroke-width="6" stroke-miterlimit="10" x1="55.31" y1="0.75" x2="55.31" y2="86.57"/>
              <line fill="#3B51A2" stroke="#000000" stroke-width="6" stroke-miterlimit="10" x1="14.68" y1="42.97" x2="100.82" y2="42.97"/>
          </g>
      </g>
      </svg>
</a>

查看我的 Codepen

标签： csscss-animationscss-transitions

Answer 1

你可以另外一个类，例如bounce-out-top，动画与顶部弹跳相反。

document.addEventListener('click', function() {
  const clickEd = menuToggle.contains(event.target)

  if (clickEd) {
    navMenu.classList.remove('bounce-out-top')
    navMenu.classList.toggle('bounce-in-top')
    menuToggle.classList.toggle('clicked')
  } else {
    // first remove `out`, then add `in`
    navMenu.classList.remove('bounce-in-top');
    navMenu.classList.add('bounce-out-top');
    menuToggle.classList.remove('clicked')
  }
})