Regex to match numbers from large document in Javascript

Question

Trying to create a regex that could match numbers from large document.

Find at least 10 continuous digits (which can go to maximum 15 digits) that could be separated by one or multiple

-
_
\s
(
)
[
] 

Tried-

/(?:((\d([ \-_\s]+?)){5,8}))/

Eg:

1-2-3-4-5-6-7-8-9-0-12-34
1 2 3 4 5 6 7 8 9 0
123-456-789-0
123---456---789---987
12 34 56 78 90
12_ -34_-56--78__90

Answer 1

You may use

/\d(?:[-_\][()\s]*\d){9,14}/g

See the regex demo

Details

• \\d - a digit
• (?:[-_\\][()\\s]*\\d){9,14} - 9 to 14 repetitions of
  • [-_\\][()\\s]* - 0 or more repetitions of - , _ , ] , [ , ( , ) or whitespace
  • \\d - a digit.

Note you do not need to escape [ inside a character class, it is parsed as a literal [ in a JS regex. However, ] must be escaped there, otherwise, it will close the character class prematurely.