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RegEx how to match everything exclude a string in a function

How can I exclude a string from the match in regex?

Input:

functionXY("Hello World");

Match:

functionXY();

i got this far with my regex expression:

/functionXY[(][)][;]/gm

but can't find the correct expression to exclude the string "Hello World" in the match.

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-09T05:08:09.953Z

You can use a regex to match everything inside the brackets, then use replace.

const str = 'functionXY("Hello World");';

const regex = /(?<=functionXY[(]).+(?=[)][;])/gm;

const res = str.replace(regex, '')
console.log(res)

Answer 2 · 2022-07-09T05:08:09.961Z

Your pattern functionXY[(][)][;] uses square brackets for single characters and only matches functionXY();

Instead you can use 2 capture groups to capture what you want to keep, and match the double quotes and all chars other than double quotes that you don't want to keep.

In the replacement use 2 capture groups $1$2

(functionXY\()"[^"]*"(\);)

Regex demo

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RegEx how to match everything exclude a string in a function

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