CODEWITHSUNDEEP
javascriptregexvalidation
Abishek
Abishek

Reputation: 11691

Validating phone number using regex with support for multuple numbers

I am not very experienced with regex and I need to validate phone numbers using javascript. I have a textbox which need to be allowed to accept multiple phone numbers with a delimiter of ';' and the characters that can be allowed for the phone numbers are

  1. Numbers
  2. '+'
  3. '-'

Could someone help me on how I can acheive this using javascript and regex/ regular expressions?

Example:

+91-9743574891;+1-570-456-2233;+66-12324576

I tried the following: 

^[0-9-+;]+$

Am not sure if this is correct.

Upvotes: 1

Views: 1170

Answers (4)

stema
stema

Reputation: 92986

Your regex will match what you allow, but I would be a bit more restrictive:

^\+?[0-9-]+(?:;\+?[0-9-]+)*$

See it here on Regexr

That means match an optional "+" followed by a series of digits and dashes. Then there can be any amount of additional numbers starting with a semicolon, then the same pattern than for the first number.

Upvotes: 0

Cylian
Cylian

Reputation: 11182

You have placed - in wrong place so, your regex is not working.

Try this(your RegEx, but slightly modified):

^[0-9+;-]+$

or 

^[-0-9+;]+$

To include a hyphen within a character class then you must do one of the following:

  1. escape the hyphen and use \-,
  2. place hyphen either at the beginning or at the end of the character class.

As the hyphen is used for specifying a range of characters. So, regex engine understands [0-9-+;]+ match any of the characters between 0 to 9, 9 to +(all characters having decimal code-point 57[char 9] to 43[char +] and it fails) and ;.

Upvotes: 1

Chris Seymour
Chris Seymour

Reputation: 85785

How about this ^([0-9\-\+]{5,15};?)+$

Explanation:

^          #Match the start of the line
[0-9\-\+]  #Allow any digit or a +/- (escaped)
{5,15}     #Length restriction of between 5 and 15 (change as needed)
;?         #An optional semicolon
+          #Pattern can be repeat once or more
$          #Until the end of the line

Only as restrictive as specified could be tighter, See it working here.

Upvotes: 0

sp00m
sp00m

Reputation: 48817

To be a bit more restrictive, you could use the following regexp:

/^\+[0-9]+(-[0-9]+)+(;\+[0-9]+(-[0-9]+)+)*$/

What it will match:

+91-9743574891
+1-570-456-2233;+66-12324576

What it won't match:

91-9743574891
+15704562233
6612324576

Upvotes: 0

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