JavaScript file changes deployment

We are having MVC web application. Some of the code is in JavaScript. When we deploy any changes to the JavaScript, the chan开发者_高级运维ges are not reflected on the client side. We have to ask clients to do CTRL+F5 to get the changes. Is there a standard way of pushing JavaScript changes to the client side?

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You can refer to the files with a version, like this:

<script type="text/javascript" src="myScript.js?v=12345"></script>

The number after v represents your build number, so when a new build pushes, they grab the files again. View source on this page to see the same behavior :) This gives you the benefit of allowing the user to cache the files as long as possible (forever), yet still have them automatically grab any update.

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you can try this meta tags

<meta http-equiv="Cache-Control" content="no-cache" />
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />

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You're not saying what server-side language your site is in. A nifty trick from the Rails world is to check the "last modified" time of the file, and to add that as a GET parameter to the URL.

In PHP, it would look like this:

<script type="text/javascript" 
        src="script.js?time=<?php echo filemtime("script.js");">

(of course, the path you need to give in the filemtime call will probably need to be an absolute one.)