不用jQuery实现的动画效果代码

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不用jQuery实现的动画效果代码

2020-05-12 我要评论

不过随着新版本的升级, 体积也慢慢变大了.
24KB, Minified and Gzipped 155KB, Uncompressed Code
压缩并gzip输出24K, 也不小了.
如果页面上一个简单的效果,一个简单的动画就没必要载入这么大的库.
看下面这个图片渐变效果, 其实纯js不到20行就可以搞定了.

<meta content="text/html; charset=utf-8" http-equiv="Content-Type" /><style type="text/css"></P>
<P>body {padding:0; margin:0;}
#main {margin: 50px auto;border: 1px solid #ccc;width:700px}
#main img {padding:0 20px; border:none; display:none}</style>
<div><img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /> <img onerror="javascript:this.src='/skin1/img/error.jpg';" alt="" width="215" height="78" src="https://img.qb5200.com/download-x/20200512/27788.gif" /></div>
<script type="text/javascript">
(function() {
 var imgs = document.getElementById('main').getElementsByTagName('img'),
 len = imgs.length,
 i = 0;
 (function() {  
  var deep = 0,
   j = i++,
   timer = setInterval(function() {    
    imgs[j].style.opacity = deep;
    imgs[j].style.filter = "alpha(opacity=" + deep * 100 + ")";
    imgs[j].style.display = 'inline';
    deep += 0.1;
    deep >= 1 && clearInterval(timer);
  }, 60);
  if (i >= len) return;
  setTimeout(arguments.callee, 1000);
 })();
})();
</script>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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