Regex validation question

Developers
1

Hi,

I'm trying to create a regex expression to validate text input. The correct input should be a series of 7 characters -- the 3 initial characters should be alphabetical (capitalization does not matter) and 4 following characters numerical. Eg, XXX0000. Could someone help me with constructing the regex expression to validate the user's input?

Thanks!

2

I'd definitely recommend using an online regex tester to work out this sort of thing, such as https://regex101.com. I believe this should do what you're asking for:

^[a-zA-Z]{3}\d{4}$