Automatic selection : http or https javascript inclusion

Question

Is it possible to automatically detect whether or not the page is accessed via http or https and then include a https://url.js or http://url.js ?

Is javascript included via https any different? I'm talking about cache age and so on?

Thanks, Wesley

Michael Berkowski · Accepted Answer · 2011-11-05 20:18:11Z

11

Use a protocol-relative link, starting with // instead of http or https:

<script type='text/javascript' src="//path/to/file.js"></script>

answered Nov 5, 2011 at 20:18

Michael Berkowski

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4 Comments

Is that supported in every browser? Interesting.

@Wesley I believe so. I think it's been part of the spec since the mid 1990's and am trying to find the W3 documentation now.

This question has a bit of interesting additional information about protocol-relative URL's when used in HTML email stackoverflow.com/questions/4303633/…

width domain name will be like //domain.net/path/to.file.js