Extract specific text surrounded by white space

Question

I have written some basic regex:

/[0123BCDER]/g

I would like to extract the bold numbers from the below lines. The regex i have written extracts the character however i would only like to extract the character if it is surrounded by white space. Any help would be much appreciated.

 721658A220421EE5867            AMBER YUR DE STE 30367887462580                  **1**                                                        00355132

 172638A220421ER3028            NIKITA YUAN         318058763400580                  **1**                                                        00355133

 982658A230421MC1234            SEAN D W MC100050420965155230421            **3**                  14032887609303                        00355134

Please note the character or digit will always be by itself.

Does this answer your question? [Regular Expression to find a string included between two characters while EXCLUDING the delimiters](https://stackoverflow.com/questions/1454913/regular-expression-to-find-a-string-included-between-two-characters-while-exclud) — 41686d6564 stands w. Palestine, Apr 28 '21 at 11:52
@MonkeyZeus OP explicitly said "whitespace" though. If they meant that literally, `\b` might include false positives. — 41686d6564 stands w. Palestine, Apr 28 '21 at 11:54

ulou · Accepted Answer · 2021-04-28T12:15:04.063

0

You are loking for something like this: /\s\d\s/g.

\s - match whitespace,
\d - match any digit,
/g - match all occurrences.

You can also replace \d with e.g. [0123BCDER] (your example) or [0-9A-Za-z] (all alphanumberic).

const input = `721658A220421EE5867            AMBER YUR DE STE 30367887462580                  1                                                       00355132

 172638A220421ER3028            NIKITA YUAN         318058763400580                  1                                                        00355133      _

 982658A230421MC1234            SEAN D W MC100050420965155230421            3                  14032887609303                        00355134
`

// with whitespaces
const res = input.match(/\s\d\s/g)
console.log(res)

// alphanumeric 
const res2 = input.match(/\s[A-Za-z0-9]\s/g)
console.log(res2)

edited Apr 28 '21 at 12:15

answered Apr 28 '21 at 11:53

ulou

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Thank you so much for your help, this works if a digit is surrounded by white space however for instances where it is not a digit and one of the following characters this does not work [BCDER] the character will always be 1 digit/character long if that helps – Sean Bailey Apr 28 '21 at 12:02
Just replace `\d` with `[0123BCDER]` or whatever character you want. – ulou Apr 28 '21 at 12:04

Extract specific text surrounded by white space

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