How should the pattern for the string "[a][1][b][2]" look like?

Question

JavaScript

There is a need to write a regular expression to extract data from brackets, 4 brackets in a row. This form does not work:

(/\[([^\]]+)\]{4,4}$/g).exec("[1][2][3][4]")

Answer 1

const str = "[a][1][b][2]";
console.log(str.substr(1, str.length - 2).split('][')); // ['a', '1', 'b', '2']

const str = "    [a]  [1]       [b]      [2]       ".trim();
console.log(str.substr(1, str.length - 2).split(/\]\s*\[/)); // ['a', '1', 'b', '2']

Answer 2

And if so: https://regex101.com/r/yO6yOg/1