How to match and extract string matching regular expression

Question

This is main string:

MR HI Government He PIHe9 Hanumana Ji 3-� fafer/ DOB : 01/01/1959 989 / Male 2094 7051 9541 �� - �� 3�1��

I want to match and extract 2094 7051 9541 using regular expression

and regex pattern to find is:

^[2-9]{1}[0-9]{-3}\\s[0-9]{4}\\s[0-9]{4}$

I want to use javascript to match and extract string. But not able to find right syntax to it.

Any help would be appreciated.

Thanks, PD

Does this answer your question? [What is a word boundary in regex?](https://stackoverflow.com/questions/1324676/what-is-a-word-boundary-in-regex) — Pushpesh Kumar Rajwanshi, Jul 16 '22 at 07:46

score 0 · Accepted Answer · answered Jul 16 '22 at 06:48

You can use

const regex = /\b[2-9]\d{3}\s\d{4}\s\d{4}\b/;

See the regex demo. Note the use of a regex literal that helps avoid double escaping backslashes.

Details

The word boundaries avoid matching the number as part of another number/word.

1 Answers1