2.4.1. Parsing the Fragment Identifier
If the parse string contains a crosshatch "#" character, then the
substring after the first (left-most) crosshatch "#" and up to the
end of the parse string is the <fragment> identifier. If the
crosshatch is the last character, or no crosshatch is present, then
the fragment identifier is empty. The matched substring, including
the crosshatch character, is removed from the parse string before
continuing.
Note that the fragment identifier is not considered part of the URL.
However, since it is often attached to the URL, parsers must be able
to recognize and set aside fragment identifiers as part of the
process.
...
fragment = *( uchar | reserved )
Rohit