The difference between \s and \S is that the former matches all the whitespace while the latter matches all nonwhitespace.
The addition of + says to the regex engine - “I want 1 or more of the previous symbol”
Matches involving + are said to be greedy and take as many characters as they can in a given match.
so \s+ says match if there’s one or more whitespace in a row, making the longest match you can each time.
and \S+ says match if there’s one or more nonwhitespace in a row, making the longest match you can each time.
\s would make two selections, both one whitespace character long
\s+ would make one selection that is two characters long
ref.
https://forum.freecodecamp.org/t/invert-regular-expression-matches-with-javascript-s-vs-s/187456
Invert Regular Expression Matches with JavaScript \S vs \S+
Hi everyone, I’m having some trouble understanding this challenge, so hoping someone can explain it. In the previous challenge, to select all the whitespace characters we used \s+ Now to select non-whitespace characters the correct expression is \S What
forum.freecodecamp.org
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