有没有一种方法可以让我把一些代码放在我的页面上,这样当有人访问一个网站时,它就会清空浏览器缓存,这样他们就可以查看更改了?

使用语言:ASP。净,VB。NET,当然还有HTML, CSS和jQuery。


当前回答

强制浏览器清除缓存或重新加载正确的数据?我已经尝试了stackoverflow中描述的大多数解决方案,一些工作,但过了一会儿,它最终缓存并显示先前加载的脚本或文件。是否有另一种方法,将清除缓存(css, js等),并实际工作在所有浏览器?

I found so far that specific resources can be reloaded individually if you change the date and time on your files on the server. "Clearing cache" is not as easy as it should be. Instead of clearing cache on my browsers, I realized that "touching" the server files cached will actually change the date and time of the source file cached on the server (Tested on Edge, Chrome and Firefox) and most browsers will automatically download the most current fresh copy of whats on your server (code, graphics any multimedia too). I suggest you just copy the most current scripts on the server and "do the touch thing" solution before your program runs, so it will change the date of all your problem files to a most current date and time, then it downloads a fresh copy to your browser:

<?php
   touch('/www/sample/file1.css');
   touch('/www/sample/file2.js');
?>

然后……剩下的程序…

It took me some time to resolve this issue (as many browsers act differently to different commands, but they all check time of files and compare to your downloaded copy in your browser, if different date and time, will do the refresh), If you can't go the supposed right way, there is always another usable and better solution to it. Best Regards and happy camping. By the way touch(); or alternatives work in many programming languages inclusive in javascript bash sh php and you can include or call them in html.

其他回答

很多答案都忽略了一点——大多数开发人员都很清楚关闭缓存是低效的。然而,在许多常见的情况下,效率并不重要,默认缓存行为被严重破坏。

这些包括嵌套的、迭代的脚本测试(大的一个!)和坏的第三方软件变通方法。这里给出的解决方案都不足以解决这种常见场景。大多数web浏览器都有过于激进的缓存,并且没有提供合理的方法来避免这些问题。

<meta http-equiv="pragma" content="no-cache" />

参见https://stackoverflow.com/questions/126772/how-to-force-a-web-browser-not-to-cache-images

除了设置Cache-control: no-cache,如果你想每次刷新本地副本,你还应该将Expires头设置为-1(某些版本的IE似乎需要这样做)。

查看HTTP缓存-与服务器检查,始终发送If-Modified-Since

强制浏览器清除缓存或重新加载正确的数据?我已经尝试了stackoverflow中描述的大多数解决方案,一些工作,但过了一会儿,它最终缓存并显示先前加载的脚本或文件。是否有另一种方法,将清除缓存(css, js等),并实际工作在所有浏览器?

I found so far that specific resources can be reloaded individually if you change the date and time on your files on the server. "Clearing cache" is not as easy as it should be. Instead of clearing cache on my browsers, I realized that "touching" the server files cached will actually change the date and time of the source file cached on the server (Tested on Edge, Chrome and Firefox) and most browsers will automatically download the most current fresh copy of whats on your server (code, graphics any multimedia too). I suggest you just copy the most current scripts on the server and "do the touch thing" solution before your program runs, so it will change the date of all your problem files to a most current date and time, then it downloads a fresh copy to your browser:

<?php
   touch('/www/sample/file1.css');
   touch('/www/sample/file2.js');
?>

然后……剩下的程序…

It took me some time to resolve this issue (as many browsers act differently to different commands, but they all check time of files and compare to your downloaded copy in your browser, if different date and time, will do the refresh), If you can't go the supposed right way, there is always another usable and better solution to it. Best Regards and happy camping. By the way touch(); or alternatives work in many programming languages inclusive in javascript bash sh php and you can include or call them in html.

您是想清除缓存,还是只是确保当前(已更改的?)页面没有缓存?

如果是后者,那就应该如此简单

<META HTTP-EQUIV="Pragma" CONTENT="no-cache">