页面a.html代码 <a href="b.html">b</a>
页面b.html代码 <a href="a.html">a</a> <script> var img = new Image(); img.src = "https://www.cnblogs.com/images/logo_small.gif"; </script>
两个页面切换时,为什么加载logo_small.gif有时候是from disk cache,有时候是from memory cache
https://www.zhihu.com/question/64201378/answer/217831630