hello i'm new javascript , need little regex/replace

i want take url example (url case 1)

http://url.com/_t_lastupdate_2670619?location=50457347

or (url case 2)

http://url.com/_t_2670619

i want select in case just

_t_2680619

ignore after "?" , before (underscore)t(underscore)

is possible regex/replace? thing managed select numbers with

var _t__and_number = document.url.replace(/[^\d]/g, ''); alert(_t__and_number);

but doesn't solve problem if there's url case 1

(if first number without (underscore)t(underscore) me lot. thanks

solutions:

onetrickpony/michaelb958:

var _t__and_number = window.location.pathname; alert(_t__and_number);

ermagana:

var _t__and_number = document.url.replace(/\?.*/g, '').match(/.*\/(.*)/)[1]; alert(_t__and_number);

as suggested onetrickpony, if url browsing, window.location.pathname yield part of url.

Naan