JavaScript content-type

Question

When I add JavaScript files to web pages, I have always done for example like this:

<script type="text/javascript" src="/js/jquery.min.js"></script>
<script type="text/javascript">
    // Custom script
</script>

But today I discovered in the response headers that JavaScript are actually served as application/javascript. Why is that? Is both correct? Or should I change one to the other? What's going on here?

I think that this one explains it good: annevankesteren.nl/2006/05/javascript-mime-type — Tomasz Kowalczyk
– Tomasz Kowalczyk, Commented Sep 13, 2010 at 11:16
Also see Why write <script type=“text/javascript”> when the mime type is set by the server? — Marcel Korpel
– Marcel Korpel, Commented Sep 13, 2010 at 11:52
Well, it explained that application/javascript was the one I should use. But not which one I should use... Also its from 2006. So is it still the case that I should use text/javascript because of browsers, or? — Svish
– Svish, Commented Sep 13, 2010 at 11:54
@Svish: At least IE 7 (and 8?) does have problems with script elements with MIME-type set to application/javascript, and as there are still plenty IE users out there… — Marcel Korpel
– Marcel Korpel, Commented Sep 13, 2010 at 12:39
Well, link appears to be broken. Good answer should link to original sources, but also refer most important contents briefly - just because this happens all the time. — Olli
– Olli, Commented Aug 29, 2012 at 8:15

bluesmoon · Accepted Answer · 2011-10-21 17:31:38Z

2

with HTML5, you can just omit the type attribute completely. All browsers assume a default type of JavaScript.

answered Oct 21, 2011 at 17:31

bluesmoon

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