Question

我需要一盏灯！

一个实时示例： https://codepen.io/cassidoo/pen/MyaWzp

。这只是整个代码的一小部分。

HTML

`<h1>Pure CSS3 Text Carousel</h1>`

`<div class="content-slider">
  <div class="slider">
    <div class="mask">
      <ul>
       <li class="anim1">
          <div class="quote">Hello, this is a quote from a person.</div>
          <div class="source">- Person</div>
        </li>
    <li class="anim2">
      <div class="quote">Hello, this is a quote from another person.</div>
      <div class="source">- Another person</div>
    </li>
    <li class="anim3">
      <div class="quote">Hello, this is a quote from an animal.</div>
      <div class="source">- Animal</div>
    </li>
    <li class="anim4">
      <div class="quote">Hello, this is a quote from a plant.</div>
      <div class="source">- Plant</div>
    </li>
    <li class="anim5">
      <div class="quote">How do ya like that.</div>
      <div class="source">- Cassidy</div>
    </li>
  </ul>
</div>

 **CSS**
 .slider li.anim1 {
   -moz-animation: cycle 60s linear infinite;
   -webkit-animation: cycle 60s linear infinite;
   animation: cycle 60s linear infinite;
  }
*/@-moz-keyframes cycle {
 0% {
    top: 0px;
  }
  4% {
    top: 0px;
  }
  16% {
   top: 0px;
    opacity: 1;
    z-index: 0;
  }
   20% {
     top: 325px;
    opacity: 0;
    z-index: 0;
  }
  21% {
    top: -325px;
    opacity: 0;
    z-index: -1;
  }
   92% {
    top: -325px;
    opacity: 0;
    z-index: 0;
  }
   96% {
    top: -325px;
    opacity: 0;
  }
  100% {
     top: 0px;
    opacity: 1;
  }
}
@-webkit-keyframes cycle {
  0% {
    top: 0px;
  }
  4% {
    top: 0px;
  }
  16% {
     top: 0px;
    opacity: 1;
    z-index: 0;
  }
  20% {
    top: 325px;
    opacity: 0;
    z-index: 0;
  }
  21% {
     top: -325px;
     opacity: 0;
    z-index: -1;
  }
  50% {
    top: -325px;
    opacity: 0;
    z-index: -1;
   }
  92% {
    top: -325px;
    opacity: 0;
    z-index: 0;
   }
  96% {
    top: -325px;
    opacity: 0;
  }
  100% {
     top: 0px;
     opacity: 1;
  }
}

我正在尝试根据代码创建5个以上的文本幻灯片。

但是当我尝试实现第六张第六张幻灯片时遇到了问题。

我认为这里的主要问题是@-WEBKIT-KEYFRAMES和@-MOZ-KEYFRAMES CYCLE 数学计算。所有幻灯片均按顺序依次另一个一起工作。

如果我复制一张现有幻灯片并尝试创建数字6，则会生成一个duplicated slideshow，并且会显示一个序列，其中重复的 Frases ！

问题：

有没有可用于进行10次或更多幻灯片显示的关键帧周期计算器或数学计算方法？
有没有可以用来帮助我进行计算的工具？
我该怎么做才能增加幻灯片的数量？
我应该在代码中实现什么？

我想重现与上面的示例link相同的效果，但要使用10幻灯片或更多。

这就是为什么我需要观察计算方法。

在此先感谢您的帮助。

Answer 1

我建议将通用类添加到需要动画的所有元素（.anim1，.anim2 ...，。anim7）。 我添加了公共类.anim。添加了.anim类样式的动画，并添加了.anim1, .anim2, ...., .anim7类样式的延迟，该延迟随整个动画持续时间的增加而增加。

换句话说，在所有元素上运行相同的动画会有所延迟。

如果要添加/删除动画元素，只需对animation-duration属性进行简单的数学运算。将会是animation-delay time * total elements。

请参见下面的代码段

html,
body {
  font-family: 'Droid Serif', serif;
}

h1 {
  font-size: 60px;
  text-align: center;
}

.content-slider {
  width: 100%;
  height: 360px;
}

.slider {
  height: 320px;
  width: 680px;
  margin: 40px auto 0;
  overflow: visible;
  position: relative;
}

.mask {
  overflow: hidden;
  height: 320px;
}

.slider ul {
  margin: 0;
  padding: 0;
  position: relative;
}

.slider li {
  width: 680px;
  height: 320px;
  position: absolute;
  top: -325px;
  list-style: none;
}

.slider .quote {
  font-size: 40px;
  font-style: italic;
}

.slider .source {
  font-size: 20px;
  text-align: right;
}

.slider li.anim {
  animation-name: cycle;
  animation-duration: 21s; /*You need to do Math here. (delay time * total elements)*/
  animation-iteration-count: infinite;
  animation-fill-mode: forwards;
  animation-timing-function: linear;
}

.anim1{
  animation-delay:0s; 
}

.anim2{
  animation-delay:3s; 
}
.anim3{
  animation-delay:6s; 
} 
.anim4{
  animation-delay:9s; 
}
.anim5{
  animation-delay:12s; 
} 
.anim6{
  animation-delay:15s; 
}
.anim7{
  animation-delay:18s; 
}

.slider:hover li {
  animation-play-state: paused;
}

@keyframes cycle {
  0% {
    top: -325px;
  }
  4% {
    top: 0px;
  }
  16% {
    top: 0px;
    opacity: 1;
    z-index: 0;
  }
  18% {
    top: 325px;
    opacity: 0;
    z-index: 0;
  }
  92% {
    top: -325px;
    opacity: 0;
    z-index: 0;
  }
  100% {
    top: -325px;
    opacity: 0;
  }
}

<h1>Pure CSS3 Text Carousel</h1>

<div class="content-slider">
  <div class="slider">
    <div class="mask">
      <ul>
        <li class="anim anim1">
          <div class="quote">1. Hello, this is a quote from a person.</div>
          <div class="source">1 - Person</div>
        </li>
        <li class="anim anim2">
          <div class="quote">2. Hello, this is a quote from another person.</div>
          <div class="source">2 - Another person</div>
        </li>
        <li class="anim anim3">
          <div class="quote">3. Hello, this is a quote from an animal.</div>
          <div class="source">3 - Animal</div>
        </li>
        <li class="anim anim4">
          <div class="quote">4. Hello, this is a quote from a plant.</div>
          <div class="source">4 - Plant</div>
        </li>
        <li class="anim anim5">
          <div class="quote">5. How do ya like that.</div>
          <div class="source">5 - Cassidy</div>
        </li>
        <li class="anim anim6">
          <div class="quote">6. How do ya like that.</div>
          <div class="source">6 - Cassidy</div>
        </li>
        <li class="anim anim7">
          <div class="quote">7. How do ya like that.</div>
          <div class="source">7 - Cassidy</div>
        </li>
      </ul>
    </div>
  </div>
</div>

html css3滑块-如何计算代码中新创建的关键帧滑块的百分比或运行时间？

1 个答案: