CODEWITHSUNDEEP
regex
Elham AM
Elham AM

Reputation: 365

How can I use regex to get 1 or 2 characters after a specific character?

How can I use regex to get 1 or 2 characters after a specific character -?

For example:

33225566-69   => 69
33225544-5    => 5

But I don't want more than 3 characters:

33226655-678  =>  Do not select

Lookbehind is not supported in some browsers. I want the regex command without lookbehind.

Upvotes: 0

Views: 3043

Answers (1)

CertainPerformance
CertainPerformance

Reputation: 370769

Just match the -, then capture 2 digits, negative lookahead for another digit, and extract the captured group, if it exists. In Javascript, for example:

['33225566-69', '33225544-5', '33226655-678'].forEach((str) => {
  const match = str.match(/-(\d{1,2})(?!\d)/);
  console.log(
    match
    ? match[1]
    : 'No Match'
  );
});

If the part with the - and the numbers are always at the end of the string, then use $ instead of the lookahead:

-(\d{1,2})$

Upvotes: 3

Related Questions