Scenario:
const texto = 'ABC [abc] a-c 1234';
console.log(texto.match(/[A-z]/g))- Because the set of
A(maiúsculo)toz(minusculo), that is,/[A-z]/greturned me[and]? - The result should not be:
[A, B, C, a, b, c, a, c]?
Why sets with intervals of A-z returns symbols in REGEX?
5
asked by anonymous 10.03.2018 / 21:58
2 answers
8
[A-z] will match ASCII characters in sequence from A to z . If you look at the ASCII table below you will find that there are several other characters between A and z ( including the brackets [] that you do not want).
Sinceyouwanttomatchonlyuppercaseandlowercaseletters,fromAtoZandfromatoz,thecorrectwouldbe[a-zA-Z].
const texto = 'ABC [abc] a-c 1234';
console.log(texto.match(/[a-zA-Z]/g))
10.03.2018 / 22:27
5
The range or ranges follow the table Unicode .
I have defined that my set should be A(maiúsculo) até z(minusculo) , there are symbols in the middle of that range.
They are: [\] ^ _ '
Look at the Unicode table:
Note:
The first 127 characters of the Unicode table are the same as the table ASCII
12.03.2018 / 12:59