regex for single lower case word

Question

I am looking for a regex pattern that ensures the user puts in a single lower case word with only letters of the alphabet. Basically they are picking a subdomain. Thanks in advance

Answer 1

The character class [a-z] describes one single character of the alphabet of lowercase letters a–z. If you want if an input does only contain characters of that class, use this:

^[a-z]+$

^ and $ mark the start and end of the string respectively. And the quantifier + allows one or more repetitions of the preceding expression.

Answer 2

^[a-z]+$ Will find one and only one lower-case word, with no spaces before or after the word.

Answer 3

/^[a-z]+$/

make sure you aren't using 'i' after the last slash

/[a-z]+/

if you are searching for any words within the context