regex - Select only sentences in javascript -

i have been trying employ regular expression grab sentences following paragraph:

str="hello, name mr. bob.  how you? in f.b.i. favorite number 2.5."     var res = str.match( /[^\.!\?]+[\.!\?]+/g );   console.log(res); 

here result:

["hello, name lance.", "  how you?", " in f.", "b.", "i.", " favorite number 2.", "5."] 

how can capture "f.b.i." , "2.5" words in sentence , not bunch of individual sentences?

a space symbol or end of string might hint it's end of sentence.

str="hello, name mr. bob.  how you? in f.b.i. favorite number 2.5."    console.log(str.match( /.*?[\.!\?]+(?:\s|$)/g )); 

which outputs:

["hello, name mr. ", "bob. ", " how you? ", "i in f.b.i. ", "my favorite number 2.5."] 

bob can't captured except explicitly specifying words followed dot (like mr, ms, mrs, etc) and, mentioned @ndn in comments, more detailed research can found here