<script type="text/javascript">
(function(){
var protocol = (document.location.protocol === "https:") ? "https:" : "http:";
document.write("<link href='"+protocol+"//fonts.googleapis.com/css?family=Exo' rel='stylesheet' type='text/css' />");
})();
</script>
转载于:https://my.oschina.net/lpcysz/blog/1162810