Regex issue

[tsoct]

I need the input to begin with 'IT' followed by 25 characters.

When I tested IT60X0542811101000000123456 for regex ^IT\[0-9A-Z]{25}$, no matches were detected.

What might be the reason?

[sujitha16]

Hopefully this should work /^IT\d[0-9 A-Z]+.{0,25}$/g

Please mark this as helpful and accept it as a solution if this resolves your query.

Thanks,

Sujatha V.M.

[tsoct]

Thanks, but this accepts less than 25 too. It must be 25 exact characters

[sujitha16]

@tsoct  Please find my scenarios based on your inputs: 

You have mentioned it should hold 25 characters after the word "IT"

Syntax : /\d([^a-z]){25}$/g

Test String : IT12345678912345678912345678

Your Test String : IT60X0542811101000000123456 

Scenario 1 : Limit to 25 

Length is 25, so its matched

Length is less than 25 so its not matched

Scenario 2: Ignore Lowercase

By adding a uppercase character or digit, it matches the expression 

If its a lowercase, it doesn't match the expression

Please try and let me know the results. Also modify accordingly to your need. 

Please mark this as helpful and accept it as a solution if this resolves your query.

Thanks,

Sujatha V.M.

[Kieran Anson]

^IT.{25}$ assuming you want to allow any character (excluding line terminations)

[tsoct]

It must be Uppercase and digits only. No special character allowed