查询串如何工作

Question

This isn't the best question ever, but since search engines feel the need to ignore symbols, I have to ask somewhere.

In a link, I'll sometimes see a ?, such as [link]/file.extension?some_type_of_info, or even +,&,=, etc ('best example' of what I mean is youtube videos). What are these called and what do they do? A good site would be great to :)

I am mostly interested because I have a site that loads stuff into a page, and currently the way I allow 'bookmarking' a page (or more important to me, being able to go back a 'page') is use hash values to represent my 'page'.

Ultimately I would like to not have the page refresh, which is why hash values are good, but I'd like alternatives if any (not really what hashmarks are meant for, but mostly different browsers seem to treat assigning the hash values in jquery differently)

Again, sorry this is mostly just a "what is this" question, but if anyone could tell me pros/cons towards using the method in question versus hash values, that would be great also :)

Answer 1

See the url specification, in particular the section syntax components:

  URI         = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

… and the definition of query.

The query component contains non-hierarchical data that, along with
data in the path component (Section 3.3), serves to identify a
resource within the scope of the URI's scheme and naming authority
(if any). The query component is indicated by the first question
mark ("?") character and terminated by a number sign ("#") character
or by the end of the URI.

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Ultimately I would like to not have the page refresh

Use the history API. This is independent of the structure of the URL (other than having to be a URL on the same origin).