I should know this...

[RayYates]

I know I can test g.secure and switch the link below from http:// to https://

<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key="></script>

The question is, can I just do //maps.googleapis.com/maps/api/js? and drop the http:

[Scot - ScotsScripts.com]

In the past often used // which always worked for me. However I don't do that anymore, I just I load all external resources using https regardless of current secure conditions on the page.

[Bruce - PhosphorMedia]

For resources, this works. But the benefit I see of using // over https: in general is that if you don't have a valid SSL cert (i.e, on a dev site or local) you can get that dreaded unsecured page load message if its on a page link...i personally don't see a downside to //.

[wmgilligan]

I do this with all CDN references.
I read somewhere that it was preferable... although I have no clue where I read it, so can't offer any reason why.

[AHerb]

The only downside of // I saw so far was the mailing campaign.
If you copy your image links as-is, they not gonna show up in the mailbox (gmail for sure rejects // ).

Using // pretty much everywhere I can

[RayYates]

I'm updating the Map Location module which contains several API calls. I think I'll just go with //