I am trying to split a string into an array of text contents which each are present within the [@ and ] delimiters. Just characters in between [@and ] are allowed to match. Being provided with a string like ...
const stringA = '[@Mary James], [@Jennifer John] and [@Johnny Lever[@Patricia Robert] are present in the meeting and [@Jerry[@Jeffery Roger] is absent.'
... the following result is expected ...
[
'Mary James',
'Jennifer John',
'Patricia Robert',
'Jeffery Roger'
]
Any logic which leads to the expected outcome can be used.
A self search for a solution brought up the following applied regex ...
stringA.match(/(?<=\[@)[^\]]*(?=\])/g);
But the result doesn't fulfill the requirements because the array features the following items ...
[
'Mary James',
'Jennifer John',
'Johnny Lever[@Patricia Robert',
'Jerry[@Jeffery Roger'
]
Close, just missing the exclusion of [:
stringA.match(/(?<=\[@)[^\[\]]*(?=\])/g);
// ^^ exclude '[' as well as ']'
The OP's regex does not feature the opening bracket within the negated character class, thus changing the OP's /(?<=\[@)[^\]]*(?=\])/g to (?<=\[@)[^\[\]]*(?=\]) already solves the OP's problem for most environments not including safari browsers due to the lookbehind which is not supported.
Solution based on a regex ... /\[@(?<content>[^\[\]]+)\]/g ... with a named capture group ...
const sampleText = '[@Mary James], [@Jennifer John] and [@Johnny Lever[@Patricia Robert] are present in the meeting and [@Jerry[@Jeffery Roger] is absent.'
// see ... [https://regex101.com/r/v234aT/1]
const regXCapture = /\[@(?<content>[^\[\]]+)\]/g;
console.log(
Array.from(
sampleText.matchAll(regXCapture)
).map(
({ groups: { content } }) => content
)
);