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不用jQuery实现的动画效果代码

时间：2020-11-05 18:03:45 | 栏目：JavaScript代码 | 点击：次

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 id="main"><img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.gif" /> <img alt="" width="215" height="78" src="https://www.jb51.net/images/logo.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:引入外部Js需再刷新一下页面才能执行]

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