Javascript Regular Expression “Single Space Character”

Question

I am learning javascript and I am analyzing existing codes.

In my JS reference book, it says to search on a single space use \"\\s\"?

But I have

Answer 1

No. It is perfectly legal to include a literal space in a regex.

However, it's not equivalent - \s will include any whitespace character, including tabs, non-breaking spaces, half-width spaces and other characters, whereas a literal space will only match the regular space character.