var inputString = 'a.b.c.d.e.f';
var pattern = inputString.match(/([^\.]+)\.[^\.]+$/)[1];
console.log(pattern);
I have successfully implemented the code using regular expressions, but I am open to exploring more efficient solutions for extracting the last two strings separated by a DOT (.) character.
To find the last characters separated by a dot, you can utilize a regular expression in your code.
/[^.]+\.[^.]+$/
[^.]+would match a single character not included in the list below
Quantifier:+This means between one and unlimited times, as many times as possible, with agreedyapproach
.represents the literal character.
\.is used to match the character.literally
[^.]+would match a single character not included in the list below
Quantifier:+This means between one and unlimited times, as many times as possible, with agreedyapproach
.represents the literal character.
$asserts the position at the end of the string
console.log('a.b.c.d.e.f'.match(/[^.]+\.[^.]+$/, ''));
console.log('zz.yy.xx.ww.vv.uu'.match(/[^.]+\.[^.]+$/, ''));
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