http协议:引用http或https地址时,需要补全http协议信息,如:
<style> //CSS背景图片 .bg{background: url(//game.gtimg.cn/images/cf/cp/a20161021sqjs/hd.jpg) no-repeat;} </style> //链接URL <a href="//cf.qq.com/main.shtml">进入官网</a> //图片SRC <img src="//game.gtimg.cn/images/cf/web201610/logo.png"> //JS链接 <script src="//ossweb-img.qq.com/images/js/title.js"></script>