Validation:Allow Numeric and Alphanumeric Pattern

Question

a textBox can contain values in format

DL-06-T-7405 (first two Alphabets then two Numbers then Alphabet and next four are Numbers) or DL-06-TT-7405(first two Alphabets then two Numbers then two Alphabet and next four are Numbers) or DL-06-TTT-7405(first two Alphabets then two Numbers then three Alphabet and next four are Numbers)

what i have done so far..

/^[A-Z]{2}[0-9]{2}\w$/

but i can not make other cases case 1: DL-06-TTT-7405 case 2: DL-06-TT-7405 case 3: DL-06-T-7405

how can i allow a textbox takeabove 3 cases only not other than this

You're missing the - characters in your Regex

Rory McCrossan
– Rory McCrossan

2016-11-03 08:59:16 +00:00
Commented Nov 3, 2016 at 8:59 — Rory McCrossan
– Rory McCrossan, Commented Nov 3, 2016 at 8:59

Wiktor Stribiżew · Accepted Answer · 2016-11-03 09:01:12Z

1

You may use a limiting quantifier {1,3} to match 1 to 3 occurrences, and add hyphens in between subpatterns:

^[A-Z]{2}-[0-9]{2}-[A-Z]{1,3}-[0-9]{4}$
                        ^^^^

See the regex demo

Pattern details:

^ - start of string
[A-Z]{2} - 2 uppercase ASCII letters
- - a literal hyphen
[0-9]{2} - 2 digits
- - - hyphen
[A-Z]{1,3} - 1 to 3 uppercase ASCII letters
-[0-9]{4} - a hyphen, 4 digits
$ - end of string.

answered Nov 3, 2016 at 9:01

Wiktor Stribiżew

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