What does /\S/ mean in a regex?
while (cur ! = null) {
if (cur.nodeType == 3 && ! /\S/. test(cur.nodeValue)) {
element. removeChild(cur);
} else if (cur. nodeType == 1) {
cleanWhitespace(cur);
}
}
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Peter Mortensen
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steve
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35For quick reference: `\s` is a [shorthand](http://www.regular-expressions.info/shorthand.html) for `[ \t\r\n\f]`, whereas `\S` equivals to `[^ \t\r\n\f]`. – caiosm1005 Sep 19 '13 at 16:39
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https://stackoverflow.com/a/6507078/1599699 – Andrew Dec 12 '17 at 19:54
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5The spaces between the brackets in @caiosm1005's comment are important. I lost way too much time not realizing that. – Henrik May 14 '18 at 12:44
5 Answers
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\s matches whitespace (spaces, tabs and new lines). \S is negated \s.
Richard H
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\S matches anything but a whitespace, according to this reference.
Klaus Byskov Pedersen
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4@steve you mean the backward slash? it's there to *escape* the `S` so as to differentiate it from capital "S" – instantsetsuna Dec 09 '10 at 15:52
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@steve The forward slashes in "/\S/" delineate the regular expression. – Thorkil Værge Oct 09 '17 at 09:28
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/\S/.test(string) returns true if and only if there's a non-space character in string. Tab and newline count as spaces.
Victor Nicollet
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The \s metacharacter matches whitespace characters.
Jason Webb
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nick
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12Attention, it’s case sensitive. This does not answer the original question. – Melebius Sep 11 '18 at 11:00
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