CODEWITHSUNDEEP
javascriptregexvalidationphone-number
skirato
skirato

Reputation: 773

Regex to check beginning of international phone number

I am trying to create a regex that validates the 2 first characters of an international phone number as the user types it in:

Is valid: +, 0, + followed by a number, 00, 0032476382763, +324763

Is not valid: 0 followed by a number different than 0, ++, everything that is not in the valid list

So far I have come up with:

/[0]|[00]|[+]|[+\d]]/g

But this validates ++ but not +2. The problem is that I can't figure out how to validate depending on the number of characters (1 or 2).

I am using that expression in javascript. Here's the regex I worked on: http://regexr.com/3br5v

My level in regex is not very good, so any help would be very much appreciated.

Upvotes: 5

Views: 233

Answers (4)

Arvind Chavhan
Arvind Chavhan

Reputation: 488

\+(9[976]\d|8[987530]\d|6[987]\d|5[90]\d|42\d|3[875]\d|
2[98654321]\d|9[8543210]|8[6421]|6[6543210]|5[87654321]|
4[987654310]|3[9643210]|2[70]|7|1)\d{1,14}$

You can use if you want to validate full an international number.

Upvotes: 1

Aleksey Shein
Aleksey Shein

Reputation: 7482

This seems to do the trick (fixed bug with false positive 01):

/^([+]|00|0$)(\d*)$/

https://regex101.com/r/qT0dB7/2

Upvotes: 2

Neal
Neal

Reputation: 811

This should work:

^[1-9]\d|\+[1-9]|00

Upvotes: 0

hjpotter92
hjpotter92

Reputation: 80657

The following pattern works for a large sample:

((?:\+(?!\+)|0(?:(?![1-9])))\d*)

https://regex101.com/r/bL0uX9/2

Upvotes: 0

Related Questions