How to implement HTML5 pattern to only accept specific characters

Question

I want to implement this pattern to only accept one letter, being the possibilities: "M,m,F or f". I tried writing this: pattern="[M][m][F][f]{1}".

score 0 · Answer 1 · answered Dec 14 '20 at 17:55

0

Try this

pattern="[MmFf]"

answered Dec 14 '20 at 17:55

Rob Kwasowski

score 0 · Answer 2 · answered Dec 14 '20 at 17:56

0

“[abc]” Matches only a single character from set of given characters. so you need [MmFf]

answered Dec 14 '20 at 17:56

Ahmed Eid

2 Answers2