c# - Regex test for "number.number.number"

Question

I'm trying to test a string to make sure it's a number.number.number.

Example would be 10.8.1

I found this regex /^d+$/ tests for a number, but how can I add the dots condition?

Answer 1

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.