Regex test() method returning false for a valid regex having match

Question

When pattern is being tested in https://regex101.com/r/YbRw2h/1, it is displaying two matches.

var patt = /\{panel:bgColor=#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})}(\r\n|\r|\n)?(.*?){panel}/gm

var str = `{panel:bgColor=#deebff}\nThis is info panel\n{panel}fkjfkfwkwfj\
    
                 {panel:bgColor=#deebff}\nThis is info panel\n{panel}`


console.log(patt.test(str)) //false

How to fix regex?

@mplungjan If you want to display the 2 matches, you get this regex101.com/r/BNMqUq/1 But I think that the OP wants to match a newline instead of \n literally. Something like {panel:bgColor=#(?:[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})}[^]*?{panel} perhaps regex101.com/r/TFz7Ga/1 — The fourth bird
– The fourth bird, Commented Jul 29, 2021 at 14:17

The fourth bird · Accepted Answer · 2021-08-09 13:00:43Z

1

You could use:

{panel:bgColor=#(?:[A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})}[^]*?{panel}

Explanation

{panel:bgColor=# Match literally
(?: Non capture group for the alternation
- [A-Fa-f0-9]{6} Match 6 occurrences of A-F a-f or a digit 0-9
- | Or
- [A-Fa-f0-9]{3} Match 3 occurrences of A-F a-f or a digit 0-9
) Close non capture group
} Match literally
[^]*? Match any char including newlines non greedy
{panel} Match literally

Regex demo

answered Aug 9, 2021 at 13:00

The fourth bird

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