JavaScript RegExp matching group takes unwanted parentheses

2018-06-27 11:18:06

This question already has an answer here:

How do you access the matched groups in a JavaScript regular expression? 14 answers

In order to work with subpatterns, there is no easy shortcut.

Instead, you have to repeatedly execute the regex on the string and collect the subpattern you want. Something like this:

var text = "do[A]and[B]",
    regexp = /[(w+)]/g,
    result = [], match;
while(match = regexp.exec(text)) {
    result.push(match[1]);
}

For this particular case you don't need capturing groups:

>>> "do[A]and[Bbbb]".match(/w+(?=])/g);
["A", "Bbbb"]

will do.

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