Splitting string by whitespace, without empty elements?

Question

I am trying to explode an string using javascript to pick searchterms, whitespace-separated. However I get empty array elements if a searchterm is ended by a whitespace, as

Answer 1

No matter what splitter this always works:

str.split(' ').filter(function(i){return i})
// With ES6
str.split(' ').filter(i => i)

Filter logic also can change in some other cases.