DOB javascript regular expression partially working

Asked Mar 15 '19 at 11:48

Active Mar 15 '19 at 11:48

Viewed 13 times

I am working on some kind of personal info validation via javascript in my project. I have used regular expression to handle most validation. But I am surprised about DOB validation.

The regular expression pattern is working for some value and nor working for few other although values format are same.

My Regular expression for DOB which accepts only YYYY-MM-DD format:

/([12]\d{3}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01]))/g

Value 1: 1912-12-12
Value 2: 2000-11-18

My javascript test function is return true for value 1 and returning false for value 2. I have also checked there is no space around values.

I have cross checked the same thing on below link:

Regular Expression Tester Javascript

Can anyone please let me know what is wrong with Value 2 or am I doing something wrong?

Thanks

asked Mar 15 '19 at 11:48

Dhirender

Remove the `g` flag. FYI: if you plan to match a whole string add anchors, `/^[12]\d{3}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])$/` – Wiktor Stribiżew Mar 15 '19 at 11:50
Can you please show the code where you use the regex ? – Pratham Mar 15 '19 at 11:53
@WiktorStribiżew thanks for reply. I have also tried after removing "g" flag. But my concern is why the samething is working for Value 1 but not for Value 2? Format is same for both values. – Dhirender Mar 15 '19 at 12:01
[All explained here](https://stackoverflow.com/a/1520853/3832970) – Wiktor Stribiżew Mar 15 '19 at 12:01
@Pratham here is the code: var valid = dob_format.test("2000-11-18"); – Dhirender Mar 15 '19 at 12:02
@WiktorStribiżew thanks. you made my day. – Dhirender Mar 15 '19 at 12:07

DOB javascript regular expression partially working

0 Answers0