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jqueryregexvalidationphone-number

Regex for 10-15 digit phone number validation

I'd like to write a custom jQuery validator method to validate a phone number and I need help with the regex for it.

It's for international phone number so it needs to accept only 10-15 digits. One more condition here is that I have a phone mask already in place: +___ ___ ___ ___ ___ (There's + and 15 counts of underscores here).

The regex should possibly ignore the +, and the underscores, and any number of digits that is between 10-15 should be accepted as a valid phone number. screenshot of the phone area field is here

Possible accepted numbers:

+2345678901_____
+23456789012____
+234567890123___
+2345678901234__
+23456789012345_
+234567890123456

Thank you for your help!

Solution

  • The following pattern would seem to work here:

    ^\+(?=.{15})\d{10,15}_{0,5}$

    This uses a positive lookahead to assert that exactly 15 characters, excluding the leading +, occur in the input. With that assertion in place, we can match for 10-15 digits, followed by 0-5 underscores.

    Demo