CODEWITHSUNDEEP
javascriptregex
Nicolas Le Thierry d'Ennequin
Nicolas Le Thierry d'Ennequin

Reputation: 6154

Trimming spaces while preserving line breaks

I need to trim the leading and trailing spaces from a multiline string. I've tried this regex with the String replace method:

String.replace(/^\s+|\s+$/gm, "");

However, on lines with spaces only, the line break is lost in the process. For instance (^ denotes a space):

^^^^1234^^^^
^^^^5678^^^^
^^^^^^^
^^90^^

outputs this :

1234
5678
90

What regex should I use to preserve the third (empty) line:

1234
5678

90

Upvotes: 8

Views: 3902

Answers (1)

WTK
WTK

Reputation: 16961

"\s" matches any whitespace character, new-lines as well. So to implement trim that works as you want, you have to replace "\s" with regular space character (or group of characters that will be treated as space).

string.replace(/^ +| +$/gm, "");

Upvotes: 12

Related Questions