强制浏览器清除缓存

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

我有同样的问题，我所做的就是改变文件名链接到我的index.html文件，然后进入index.html文件，更新他们的名字，不是最好的做法，但如果它工作。浏览器将它们视为新文件，因此它们会被重新下载到用户的设备上。

例子: 我想更新一个css文件，它的命名为styles.css，把它改成styles.css

进入index。html进行更新，并将其更改为

2022-03-31 13:56:48

其他回答

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

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

2009-12-17 16:31:14

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.

2017-06-12 20:45:11

对于webpack用户:-

我在webpack配置中添加了chunkash。这解决了每次部署时缓存失效的问题。我们还需要注意index.html/ asset。清单不是缓存在你的CDN或浏览器。在webpack配置中的块名配置将看起来像这样:-

文件名:[chunkhash] - $ {Date.now ()} . js

或者如果你使用contenthash那么

文件名:[contenthash] - $ {Date.now ()} . js

2021-05-29 09:35:27

如果有兴趣，我已经找到了我的解决方案，让浏览器在。net MVC (.net fw 4.8)和使用包的情况下刷新.css和.js。我想让浏览器仅在部署新程序集之后刷新缓存文件。

根据撒利亚多尼的回答，我的解决方案如下:

store your application base url in the web config app settings (the HttpContext is not yet available at runtime during the RegisterBundle...), then make this parameter changing according to the configuration (debug, staging, release...) by the xml transform In BundleConfig RegisterBundles get the assembly version by the means of reflection, and... ...change the default tag format of both styles and scripts so that the bundling system generates link and script tags appending a query string parameter on them.

下面是代码

public static void RegisterBundles(BundleCollection bundles)
{
   string baseUrl = system.Configuration.ConfigurationManager.AppSettings["by.app.base.url"].ToString();
       
   string assemblyVersion = Assembly.GetExecutingAssembly().GetName().Version.ToString();
   
   Styles.DefaultTagFormat = $"<link href='{baseUrl}{{0}}?v={assemblyVersion}' rel='stylesheet'/>";
   Scripts.DefaultTagFormat = $"<script src='{baseUrl}{{0}}?v={assemblyVersion}'></script>";
}

你会得到这样的标签

<script src="https://example.org/myscriptfilepath/script.js?v={myassemblyversion}"></script>

您只需要记住在部署之前构建一个新版本。

Ciao

2022-11-30 12:08:21

我也遇到过类似的问题，我是这样解决的:

In index.html file I've added manifest: <html manifest="cache.manifest"> In <head> section included script updating the cache: <script type="text/javascript" src="update_cache.js"></script> In <body> section I've inserted onload function: <body onload="checkForUpdate()"> In cache.manifest I've put all files I want to cache. It is important now that it works in my case (Apache) just by updating each time the "version" comment. It is also an option to name files with "?ver=001" or something at the end of name but it's not needed. Changing just # version 1.01 triggers cache update event. CACHE MANIFEST # version 1.01 style.css imgs/logo.png #all other files It's important to include 1., 2. and 3. points only in index.html. Otherwise GET http://foo.bar/resource.ext net::ERR_FAILED occurs because every "child" file tries to cache the page while the page is already cached. In update_cache.js file I've put this code: function checkForUpdate() { if (window.applicationCache != undefined && window.applicationCache != null) { window.applicationCache.addEventListener('updateready', updateApplication); } } function updateApplication(event) { if (window.applicationCache.status != 4) return; window.applicationCache.removeEventListener('updateready', updateApplication); window.applicationCache.swapCache(); window.location.reload(); }

现在你只需更改文件，在manifest中你必须更新版本注释。现在访问index.html页面将更新缓存。

解决方案的部分不是我的，但我通过互联网找到了它们，并把它们放在一起，所以它是有效的。

2016-08-18 12:53:56

强制浏览器清除缓存

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