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Full Stack JavaScript Techdegree Graduate 18,815 PointsWhy does /^[a-z]+$/ work?
I'm missing the explanation why this expression works. To me, a string like aadFKjh should also be valid considering this regex because it starts and ends with lowercase letters. So how does it work?
1 Answer
Steven Parker
231,236 PointsThis regex accepts a variable length string composed entirely of lower-case letters. Every letter must match the character class defined by "[a-z]". Any upper-case letter, not just at the start or end, would not match and therefore the entire string would be rejected.