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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.
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A URL is composed from a limited set of characters belonging to the US-ASCII character set. These characters include digits (0-9), letters(A-Z, a-z), and a few special characters ( "-" , "." , "_" , "~" ).
A fragment is an internal page reference, sometimes called a named anchor. It usually appears at the end of a URL and begins with a hash (#) character followed by an identifier. It refers to a section within a web page. In HTML documents, the browser looks for an anchor tag with a name attribute matching the fragment.
The fragment identifier is a string after URI, after the hash, which identifies something specific as a function of the document. For a user interface Web document such as HTML poage, it typically identifies a part or view. For example in the object http://foo/bar#frag. the string "frag" is the fragment identifier.
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 ?
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