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

CodePudding user response：

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

• \b - a word boundary
• [2-9] - a digit from 2 to 9
• \d{3} - three digits
• \s - a wjitespace
• \d{4} - four digits
• \s - a whitespace
• \d{4} - four digits
• \b - a word boundary.

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