I recently noticed a peculiar link on the Font Awesome homepage that seems to work without including http or https.
<link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
This made me wonder, what does // actually mean in this context?
It is a flexible link that works for both "http" and "https" versions of the page without needing to change any code. The link can either be an absolute or relative URL, with it being relative to the current page in this case:
For example, on an "HTTP" page such as: http://sample.com/home, the link will resolve to:
http://netdna.bootstrapcdn.com/font-aw...And on an "HTTPS" page like: https://sample.com/home, the link will resolve to:
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