temp=2.390689E-02 请问

[bluecrest]

打开csdn页面都会有一个temp=2.390689E-02
这个是什么东东

[saucer]

the browser caches pages based on the url, if you use a random string at the end of the url, the browser will think the page is different and will try to retrieve a new page from the web server

[cnhgj]

防止缓存

[suguanqun]

防止访问缓存中的旧页！