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POWhat does appending "?v=1" to CSS and Javascript URLs in link and script tags do?
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  1. POWhat does appending "?v=1" to CSS and Javascript URLs in link and script tags do?
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    copied!<p>I have been looking at a HTML 5 boilerplate template (from <a href="http://html5boilerplate.com/" rel="noreferrer">http://html5boilerplate.com/</a>) and noticed the use of <code>"?v=1"</code> in URLs when referring to CSS and Javascript files.</p> <ol> <li>What does appending <code>"?v=1"</code> to CSS and Javascript URLs in link and script tags do?</li> <li>Not all Javascript URLs have the <code>"?v=1"</code> (example from the sample below: <code>js/modernizr-1.5.min.js</code>). Is there a reason why this is the case?</li> </ol> <p>Sample from their <code>index.html</code>:</p> <pre><code>&lt;!-- CSS : implied media="all" --&gt; &lt;link rel="stylesheet" href="css/style.css?v=1"&gt; &lt;!-- For the less-enabled mobile browsers like Opera Mini --&gt; &lt;link rel="stylesheet" media="handheld" href="css/handheld.css?v=1"&gt; &lt;!-- All JavaScript at the bottom, except for Modernizr which enables HTML5 elements &amp; feature detects --&gt; &lt;script src="js/modernizr-1.5.min.js"&gt;&lt;/script&gt; &lt;!------ Some lines removed ------&gt; &lt;script src="js/plugins.js?v=1"&gt;&lt;/script&gt; &lt;script src="js/script.js?v=1"&gt;&lt;/script&gt; &lt;!--[if lt IE 7 ]&gt; &lt;script src="js/dd_belatedpng.js?v=1"&gt;&lt;/script&gt; &lt;![endif]--&gt; &lt;!-- yui profiler and profileviewer - remove for production --&gt; &lt;script src="js/profiling/yahoo-profiling.min.js?v=1"&gt;&lt;/script&gt; &lt;script src="js/profiling/config.js?v=1"&gt;&lt;/script&gt; &lt;!-- end profiling code --&gt; </code></pre> <p>Thanks in advance.</p>
 

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