Add ?v= version number after js or css to prevent browser caching
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Copy code The code is as follows:<span style="font-size:14px;">css and js with parameters (such as .css?v= and .js?v= or .css?version= and .js?version= ) <script type=”text/javascript” src=”jb51.js?version=1.2.6″></script> <link rel='stylesheet' href='base.css?version=2.3.3′ type='text/css' /> There are two possibilities for using parameters: First, the script does not exist, but is dynamically generated by the server, so it has a version number to distinguish it. That is, the above code is equivalent to the file Copy code The code is as follows:<script type=”text/javascript” src=”jb51.js”></script> <link rel='stylesheet' href='base.css' type='text/css' /> But the browser will think it is a certain version of the file! Second, the client will cache these css or js files. Therefore, every time the js or css file is upgraded and the version number is changed, the client browser will re-download the new js or css file, which serves the purpose of refreshing the cache. Sometimes you may find that after you modify the style or js, it remains unchanged when you refresh it. This is because the client has cached the CSS or JS file, so adding parameters is still helpful! The second situation is the most common, but both may exist at the same time. </span> |
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