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

score 11 · Accepted Answer · answered Nov 05 '11 at 20:18

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 05 '11 at 20:18

Michael Berkowski

Is that supported in every browser? Interesting. – Nov 05 '11 at 20:19
@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. – Michael Berkowski Nov 05 '11 at 20:20
This question has a bit of interesting additional information about protocol-relative URL's when used in HTML email http://stackoverflow.com/questions/4303633/preventing-secure-insecure-errors-by-using-protocol-relative-urls-for-image-sour – Michael Berkowski Nov 05 '11 at 20:37
width domain name will be like `//domain.net/path/to.file.js` – Vladimir Ch Sep 13 '21 at 13:47

1 Answers1