正则表达式从字符串中提取数字

Question

I have multiple strings and I want to extract only matching numbers .

Sample strings :

abc_efghi_92458_ijk_mno_uvw_test_v2_ghi003
AB_CD_E01_436873_MY_NAME_TESTING_O_001
testing-check-100001-23244-sln-001

I am expecting output as :

92458
436873
23244

I tried with +([^_]+) and +([\\d{5,6}]+)

No luck Thanks

Answer 1

For your example data you might use a capturing group and a backreference.

The value is in group 2

.*([-_])(\d+)\1

Regex demo

Answer 2

You can just simply iterable throw each string from the list. Then apply this regex: .*([-_])(\\d+)\\1 and get the group 2 if it matches. Then add the output to the result.

Answer 3

This will give you any contiguous sequence of numbers:

/[.*!\d](\d+)[.*!\d]/g

 let arr = [ "abc_efghi_92458_ijk_mno_uvw_test_v2_ghi003", "AB_CD_E01_436873_MY_NAME_TESTING_O_001", "testing-check-100001-23244-sln-001" ] let re = /[.*!\\d](\\d+)[.*!\\d]/g let res = arr.map(str => str.match(re)) console.log(res)