Assign a key to browser bookmark?

How to assign a key to browser bookmark?
example:

  1. I type "A" in the search bar, press Enter,
  2. then the browser (Chrome or Firefox) sends me to bookmarkA

Edit: remembered Chrome has this:

but is there a way to have this work across browsers using KM?

I mostly use LaunchBar for this. After I create a bookmark, LB can usually find it, and for my most frequently used BMs, I use a LB abbreviation.

thanks! will check LB