List of valid characters for the fragment identifier in an URL?

问题

I\'m using the fragment identifier to create a permalink for AJAX events in my web app similar to this guy. Something like:

http://www.myapp.com/calendar#filter:year/2010/month/5

I\'ve done quite a bit of searching but can\'t find a list of valid characters for the fragment idenitifer. The W3C spec doesn\'t offer anything.

Do I need to encode the characters the same as the URL in has in general?

There doesn\'t seem to be any good information on this anywhere.

回答1:

See the RFC 3986.

fragment    = *( pchar / "/" / "?" )
pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"    
unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
pct-encoded   = "%" HEXDIG HEXDIG
sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
                 / "*" / "+" / "," / ";" / "="

So you can use !, $, &, ', (, ), *, +, ,, ;, =, something matching %[0-9a-fA-F]{2}, something matching [a-zA-Z0-9], -, ., _, ~, :, @, /, and ?

回答2:

http://tools.ietf.org/html/rfc3986#section-3.5:

fragment    = *( pchar / "/" / "?" )

and

pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
              / "*" / "+" / "," / ";" / "="
pct-encoded   = "%" HEXDIG HEXDIG

So, combined, the fragment cannot contain #, a raw %, ^, [, ], {, }, \, ", < and > according to the RFC.

回答3:

One other RFC speak of that: RFC-1738

URL schemeparts for ip based protocols:
HTTP

httpurl        = "http://" hostport [ "/" hpath [ "?" search ]]
hpath          = hsegment *[ "/" hsegment ]
hsegment       = *[ uchar | ";" | ":" | "@" | "&" | "=" ]
search         = *[ uchar | ";" | ":" | "@" | "&" | "=" ]

来源：https://stackoverflow.com/questions/2849756/list-of-valid-characters-for-the-fragment-identifier-in-an-url

标签

fragment-identifier