IE7 and below are available
Only visible in IE6 version
Available in versions below IE8
IE7 and above versions are visible
where:
lt: means less than
lte: means less than or equal to
gt: means greater than
gte: means greater than or equal to
Without the above words, it means equal to
Usage: Used to selectively load styles or scripts
<link rel="stylesheel" href="css.css"><!--默认添加的样式--><!--[if lte IE 8]> <link rel="stylesheel" href="lteie8.css"> <!--当浏览器版本小于等于IE8时加载的样式--><![endif]--><!--[if IE 9]> <script src="ie9.js"></script> <!--当浏览器版本为IE9时加载该脚本--><![endif]-->
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