http url parameters question

Hi yall, I am currently trying to make a Deno http server for the funs, but I am walking into a problem.

I want to have 3 pages:

/thing

/thing

and

/thing/:id

/thing/:id

.
If the route is

, it directs to home, if the route is

/thing/:id

/thing/:id

, then it directs to that page, and if the route is

/thing/:id

/thing/:id

but without a (valid) id, then it directs to

/thing

/thing

. Is there a way to do this without putting the handlers for

/thing

/thing

and

/thing/:id

/thing/:id

in seperate?