You’d probably want to create a regex as follows:
^\d+\.\d+\.\d+$
The ^
means “start of phrase”, the $
means “end of phrase”, \d+
says “digit one or more times in a row”, and \.
means “.” but must be escaped with the leading \
due to .
having a special meaning in regex.
0
solved Regex test for “number.number.number”