Regular Expressions 101

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/
(\d+)\s?(Ans|Años|Years Old|Year Old|Years D'âge|Yo|-?Years-Old)(\s|$)
/
gm
1st Capturing Group
(\d+)
\d
matches a digit (equivalent to [0-9])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\s
matches any whitespace character (equivalent to [\r\n\t\f\v ])
? matches the previous token between zero and one times, as many times as possible, giving back as needed (greedy)
2nd Capturing Group
(Ans|Años|Years Old|Year Old|Years D'âge|Yo|-?Years-Old)
1st Alternative
Ans
Ans
matches the characters Ans literally (case sensitive)
2nd Alternative
Años
Años
matches the characters Años literally (case sensitive)
3rd Alternative
Years Old
Years Old
matches the characters Years Old literally (case sensitive)
4th Alternative
Year Old
Year Old
matches the characters Year Old literally (case sensitive)
5th Alternative
Years D'âge
Years D'âge
matches the characters Years D'âge literally (case sensitive)
6th Alternative
Yo
Yo
matches the characters Yo literally (case sensitive)
7th Alternative
-?Years-Old
-
matches the character - with index 4510 (2D16 or 558) literally (case sensitive)
Years-Old
matches the characters Years-Old literally (case sensitive)
3rd Capturing Group
(\s|$)
1st Alternative
\s
\s matches any whitespace character (equivalent to [\r\n\t\f\v ])
2nd Alternative
$
$ asserts position at the end of a line
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gm

Test String

Substitution

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