Text font that all letters occupy the same space

Is there another source outside monospace and courier where all letters occupy the same space? or if it does not exist is it possible to do this with javascript? for example, pick up any font and make all letters of it occupy the same space

  

Note: the space quoted above is in pixel, for example, in the font    monospace each letter occupies 5,49805 PIXEL independent if the letter is   uppercase or lowercase or if it is A ou Z