/^(\.?[0-9]+)$|^([0-9]+(\.[0-9]+)?)$/
It’s by no means perfect (will allow 0000001, 000, 1.0000, 0.0), but it’s not bad for general purpose.
/^(\.?[0-9]+)$|^([0-9]+(\.[0-9]+)?)$/
It’s by no means perfect (will allow 0000001, 000, 1.0000, 0.0), but it’s not bad for general purpose.