regex coincide con todos los caracteres excepto el código de ejemplo

Ejemplo 1: las expresiones regulares coinciden con todo excepto

let reg = /[^charachter_to_not_match]*/
// Example
let str = '<<1,2,3>, <4,5,6>, <7,8,9>>'
//match everything but '>'
reg = /[^>]+/g // Array(3) ["<<1,2,3", ", <4,5,6", ", <7,8,9"]
//match everything but '<' and '>'
reg = /[^<>]+/g // Array(5) ["1,2,3", ", ", "4,5,6", ", ", ...]
//match anything but '<', '>', ',' and 's' (s=any whitespace)
reg = /[^<>,s]+/g // Array (9) ["1", "2", ..., "9"]

Ejemplo 2: regex cualquier carácter excepto

// to exclude "
[^"]

Ejemplo 3: carácter de exclusión de expresiones regulares

[^a]	#any character except 'a'
[^aA]	#any character except 'a' or 'A'
[^a-z]	#any character except a lower case character
[^.]	#any character not a period

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