详解vue+css3做交互特效的方法(2)

日期：2020-05-11 栏目：程序人生浏览：次

javascript方式

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<style>
  body{
    background: #ccc;
  }
  h1 {
    color: white;
    text-transform: uppercase;
    margin-top: 100px;
    text-align: center;
    font-size: 6rem;
    line-height: 1;
    animation: letterspacing 1s 7 alternate ease-in-out;
    display: block;
    letter-spacing: .5rem;
  }

  @keyframes letterspacing {
    0% {
      letter-spacing: -6rem;
      filter: blur(1rem);
    }

    40% {
      filter: blur(.3rem);
    }

    80% {
      letter-spacing: .5rem;
      filter: blur(0rem);
    }
  }
</style>
<body>
<div id="text">
  <h1>欢迎浏览</h1>
</div>
</body>
<script>
  var oH1=document.querySelector('h1'),nowIndex=0;
  console.log(oH1)
  var timer = setInterval(function () {
    nowIndex++;
    switch (nowIndex) {
      case 1:
        oH1.innerHTML = '守候的文章';
        break;
      case 2:
        oH1.innerHTML = '愿您浏览愉快';
        break;
      case 3:
        oH1.innerHTML = '学到知识';
        break;
    }
    if (nowIndex > 3) {
      setTimeout(() => {
        clearInterval(timer);
      }, 2000)
    }
  }, 2000)
</script>
</html>

3.导航滑块运行效果

原理分析

首先，下面是页面初始化的时候，橙色滑块的位置

鼠标放到第二个tab上面，大家可以看到，橙色滑块就是向右偏移了一个tab的距离

鼠标放到第三个tab上面，大家可以看到，橙色滑块就是向右偏移了两个tab的距离

如果从第一个tab到第六个tab的索引是0,1,2,3,4,5。

那么滑块的公式就是（索引*tab的宽度）。大家看到有逐渐过去的效果，其实是css3过渡（transition）的效果。大家看下面的代码就行了，一看就懂！代码如下：

vue方式

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<link rel="stylesheet" href="reset.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >
<style>
  .nav{
    margin: 40px;
    position: relative;
  }
.nav li{
  float: left;
  width: 100px;
  height: 40px;
  line-height: 40px;
  color: #fff;
  text-align: center;
  background: #09f;
  cursor: pointer;
}
  .nav span{
    position: relative;
    z-index: 2;
  }
  .nav .slider{
    position: absolute;
    transition: all .5s cubic-bezier(0.4, -0.3, 0.57, 1.38);
    width: 100px;
    height: 40px;
    background: #f90;
    top: 0;
    left: 0;
    z-index: 1;
  }
</style>
<body>
<div class="nav clear" id="nav" @mouseleave="nowIndex=0">
  <ul>
    <li @mouseenter.stop="nowIndex=0"><span>Tab One</span></li>
    <li @mouseenter.stop="nowIndex=1"><span>Tab Two</span></li>
    <li @mouseenter.stop="nowIndex=2"><span>Tab Three</span></li>
    <li @mouseenter.stop="nowIndex=3"><span>Tab four</span></li>
    <li @mouseenter.stop="nowIndex=4"><span>Tab five</span></li>
    <li @mouseenter.stop="nowIndex=5"><span>Tab six</span></li>
  </ul>
  <div class="slider" :style="{'transform':'translate3d('+nowIndex*100+'px,0,0)'}"></div>
</div>
</body>
<script src="vue.min.js"></script>
<script type="text/javascript">
  new Vue({
    el:'#nav',
    data:{
      nowIndex:0
    }
  })
</script>
</html>

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详解vue+css3做交互特效的方法(2)

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