让浏览器优先使用Edge或者chrome
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
让双核浏览器优先使用chrome内核
<meta name="renderer" content="webkit">
dns预解析
<link rel="dns-prefetch" href="//static.360buyimg.com">
script异步加载
<script async src="..."></script>