Validate phone number with JavaScript

Question

I found this code in some website  and it works perfectly  It validates that the phone number is in one of these formats   123  456-7890 or 123-456-7890    The problem is that my client  I don t know why  maybe client stuffs  wants to add another format  the ten numbers consecutively  something like this  1234567890   I m using this regular expression           d 3       -  s   d 3  -  s  d 4      How can I add that it also validates the another format  I m not good with regular expressions

User · Answer

try this        0     d 0        1  d 1 3     0    0    s  d     d 2 3  s 1  d   d   1   s -   d    s -   d   1 2   s  0    gm  valid formats    123  456-7890  123 456-7890 123-456-7890 1234567890  31636363634  3 123  123-12-12  3 123 123-12-12  3 123 1231212  3 123  12312123  3 123  123 12 12 075-63546725  7910 120 54 54         910 120 54 54  8 999 999 99 99       https   regex101 com r QXAhGV 1

User · Answer

d 3      -  s   d 3  -  s   d 4      The   character signifies that the preceding group should be matched zero or one times  The group  -  s  will match either a - or a   character

User · Answer

If you using on input tag than this code will help you  I write this code by myself and I think this is very good way to use in input  but you can change it using your format  It will help user to correct their format on input tag       phone   on  input   function        this is use for every time input change          var inputValue   getInputValue      get value from input and make it usefull number         var length   inputValue length    get lenth of input          if  inputValue  lt  1000                        inputValue    1   inputValue           else if  inputValue  lt  1000000                         inputValue    1    inputValue substring 0  3          inputValue substring 3  length            else if  inputValue  lt  10000000000                         inputValue    1    inputValue substring 0  3          inputValue substring 3  6     -    inputValue substring 6  length            else                       inputValue    1    inputValue substring 0  3          inputValue substring 3  6     -    inputValue substring 6  10                                phone   val inputValue     correct value entered to your input          inputValue   getInputValue     get value again  becuase it changed  this one using for changing color of input border        if   inputValue  gt  2000000000   amp  amp   inputValue  lt  9999999999                         phone   css  border   black solid 1px     if it is valid phone number than border will be black         else                       phone   css  border   red solid 1px     if it is invalid phone number than border will be red                     function getInputValue              var inputValue       phone   val   replace   D g         remove all non numeric character         if  inputValue charAt 0     1     if first character is 1 than remove it                        var inputValue   inputValue substring 1  inputValue length                     return inputValue

User · Answer

If you are looking for 10 and only 10 digits  ignore everything but the digits-     return value match   d g  length   10

User · Answer

I would suggest using something clearer  especially thinking to who will have to maintain the code     what about   var formats     999 999-9999 999-999-9999 9999999999   var r   RegExp                       formats                   replace           g      1                     replace  9 g    d                             where the regexp is built from a clear template   Adding a new one would then be a no-brainer and may be even the customer itself could be able to do that in a  options  page

User · Answer

Just ignore everything but digits   Here is what I use      USA phones should contain at least 10 digits  For Ukrainian phones it s OK to have only 9 digits  without leading 0 and country code prefix    380  88 888-88-88  String prototype isValidPhone   function digitsCount      var str   this trim   match   d g     return str  amp  amp  str length  gt    digitsCount    10      default is at least 10 digits

User · Answer

0 1  0-9  1 3     0 1  - s   0-9    g       123  456-7890     123  456-7890     123 -456-7890     123  - 456-7890     123  - 456-78-90   123-456-7890   123 456 7890   1234567890    31636363634   075-63546725   This is a very loose option and I prefer to keep it this way  mostly I use it in registration forms where the users need to add their phone number  Usually users have trouble with forms that enforce strict formatting rules  I prefer user to fill in the number and the format it in the display or before saving it to the database  http   regexr com 3c53v

User · Answer

The following REGEX will validate any of these formats    123  456-7890 123-456-7890 123 456 7890 1234567890        0 1  0-9  3     0 1  - s    0 1  0-9  3  - s    0 1  0-9  4

User · Answer

First off  your format validator is obviously only appropriate for NANP  country code  1  numbers   Will your application be used by someone with a phone number from outside North America   If so  you don t want to prevent those people from entering a perfectly valid  international  number   Secondly  your validation is incorrect   NANP numbers take the form NXX NXX XXXX where N is a digit 2-9 and X is a digit 0-9   Additionally  area codes and exchanges may not take the form N11  end with two ones  to avoid confusion with special services except numbers in a non-geographic area code  800  888  877  866  855  900  may have a N11 exchange   So  your regex will pass the number  123  123 4566 even though that is not a valid phone number   You can fix that by replacing  d 3  with  2-9  1  d 2    Finally  I get the feeling you re validating user input in a web browser   Remember that client-side validation is only a convenience you provide to the user  you still need to validate all input  again  on the server   TL DR don t use a regular expression to validate complex real-world data like phone numbers or URLs  Use a specialized library

User · Answer

1  s      d 3        -  s    s   d 3  -  s   d 4     Although this post is an old but want to leave my contribuition  these are accepted  5555555555 555-555-5555  555 555-5555 1 555 555-5555 1 555 555 5555 1 555-555-5555 1  555  555-5555  these are not accepted   555-5555 -  to accept this use       1  s       d 3          -  s    s   d 3  -  s   d 4    5555555 -  to accept this use      1  s       d 3          -  s    s   d 3  -  s   d 4    1 555 555-5555 123   amp   asdf  55555555  6505552368  2  757  622-7382 0  757  622-7382 -1  757  622-7382 2 757 622-7382 10  757  622-7382 27576227382  275 76227382 2 757 6227382 2 757 622-7382  555 5 55  -5555  this is the code I used   function telephoneCheck str      var patt   new RegExp      1  s      d 3        -  s    s   d 3  -  s   d 4        return patt test str      telephoneCheck   1 555-555-5555

User · Answer

Simple Regular expression    b d 3  -    d 3  -    d 4  b g  Check out the format  hope it works       444-555-1234     f 246 555 8888     m 1235554567

User · Answer

Everyone s answers are great  but here s one I think is a bit more comprehensive     This is written for javascript match use of a single number in a single line         911   d 4       1                 -  555        2-9  0-9  2            1      -    2-9  0-9  2       -      555  01     2-9  0-9  2        -    0-9  4      If you want to match at word boundaries  just change the   and   to  b  I welcome any suggestions  corrections  or criticisms of this solution   As far as I can tell  this matches the NANP format  for USA numbers - I didn t validate other North American countries when creating this   avoids any 911 errors  can t be in the area code or region code   eliminates only those 555 numbers which are actually invalid  region code of 555 followed by 01xx where x   any number

User · Answer

Just wanted to add a solution specifically for selecting non-local phone numbers 800 and 900 types        1 -   s        900 8 0 4 5 6 7 8  3     s   -  s   d 3  -  s   d 4

User · Answer

This will work          d 3      -  s   d 3  -  s   d 4      The   character signifies that the preceding group should be matched zero or one times  The group  -  s  will match either a - or a   character  Adding   after the second  occurrence of this group in your regex allows you to match a sequence of 10 consecutive digits

User · Answer

Where str could be any of these formarts  555-555-5555  555 555-5555  555  555-5555 555 555 5555 5555555555 1 555 555 5555   x000D   x000D  function telephoneCheck str    x000D    var isphone      1 s 1        d 3      d 3    -  s    d 3    -  s    d 4     test str   x000D    alert isphone   x000D    x000D  telephoneCheck  1 555 555 5555    x000D   x000D   x000D

User · Answer

I have to agree that validating phone numbers is a difficult task  As for this specific problem i would change the regex from         d 3      -  s   d 3  -  s  d 4      to         d 3      -  s   d 3  -  s   d 4      as the only one more element that becomes unnecessary is the last dash space

User · Answer

What I would do is ignore the format and validate the numeric content   var originalPhoneNumber    415-555-1212    function isValid p      var phoneRe      2-9  d 2  2-9  d 2  d 4       var digits   p replace   D g         return phoneRe test digits

User · Answer

This reg ex is suitable for international phone numbers and multiple formats of mobile cell numbers   Here is the regular expression       1  d 2 3  s     1  d 1 3     1  s  d    d 2 3  s 1  d   d   1   s -   d    s -   d   1 2     Here is the JavaScript function  function isValidPhone phoneNumber        var found   phoneNumber search       1  d 2 3  s     1  d 1 3     1  s  d     d 2 3  s 1  d   d   1   s -   d    s -   d   1 2          if found  gt  -1            return true            else           return false            This validates the following formats    44 07988-825 465  with any combination of hyphens in place of space except that only a space must follow the  44    44  0  7988-825 465  with any combination of hyphens in place of spaces except that no hyphen can exist directly before or after the  0  and the space before or after the  0  need not exist   123 456-789 0123  with any combination of hyphens in place of the spaces   123-123 123  with any combination of hyphens in place of the spaces   123 123456  Space can be replaced with a hyphen   1234567890  No double spaces or double hyphens can exist for all formats

User · Answer

realy simple    9001234567  match    d 10   g

User · Answer

Validate phone number   return formatted  data   x000D   x000D  function validTel str   x000D    str   str replace    0-9  g       x000D    var l   str length  x000D    if l lt 10  return   error    Tel number length  lt  10    x000D     x000D    var tel       num   str substr -7   x000D        code   str substr -10  3   x000D        coCode       x000D    if l gt 10    x000D      coCode         str substr 0   l-10     x000D      x000D    tel   coCode        code        num  x000D     x000D    return   succes   tel   x000D    x000D   x000D  console log validTel   1  223  123 45 67     x000D   x000D   x000D

User · Answer

Try this js function  Returns true if it matches and false if it fails Ref   x000D   x000D  function ValidatePhoneNumber phone    x000D          return        0-9  2      -      0-9  4   -      0-9  4     test phone   x000D    x000D   x000D   x000D

User · Answer

My regex of choice is               0-9  3      - s     0-9  3  - s     0-9  4 6   im   Valid formats    123  456-7890  123 456-7890 123-456-7890 123 456 7890 1234567890  31636363634 075-63546725

User · Answer

d 3        - s      d 3  1  d 4    This will validate any phone number of variable format        d 3      finds 3 digits enclosed by parenthesis or not      - s      finds any of these separator characters or not   d 3  finds 3 digits   1 uses the first matched separator - this ensures that the separators are the same  So  000  999-5555 will not validate here because there is a space and dash separator  so just remove the   1  and replace with the separator sub-pattern  doing so will also validate  non standard formats   You should however be format hinting for user input anyway    d 4  finds 4 digits  Validates     000  999 5555  000 -999-5555  000  999 5555  000  999-5555  000 9995555 000 999 5555 000-999-5555 000 999 5555 0009995555   BTW this is for JavaScript hence to double escapes

User · Answer

This function worked for us well   x000D   x000D  let isPhoneNumber   input   gt       try       let ISD CODES    93  355  213  1684  376  244  1264  672  1268  54  374  297  61  43  994  1242  973  880  1246  375  32  501  229  1441  975  591  387  267  55  246  1284  673  359  226  257  855  237  1  238  1345  236  235  56  86  61  61  57  269  682  506  385  53  599  357  420  243  45  253  1767  1809  1829  1849  670  593  20  503  240  291  372  251  500  298  679  358  33  689  241  220  995  49  233  350  30  299  1473  1671  502  441481  224  245  592  509  504  852  36  354  91  62  98  964  353  441624  972  39  225  1876  81  441534  962  7  254  686  383  965  996  856  371  961  266  231  218  423  370  352  853  389  261  265  60  960  223  356  692  222  230  262  52  691  373  377  976  382  1664  212  258  95  264  674  977  31  599  687  64  505  227  234  683  850  1670  47  968  92  680  970  507  675  595  51  63  64  48  351  1787  1939  974  242  262  40  7  250  590  290  1869  1758  590  508  1784  685  378  239  966  221  381  248  232  65  1721  421  386  677  252  27  82  211  34  94  249  597  47  268  46  41  963  886  992  255  66  228  690  676  1868  216  90  993  1649  688  1340  256  380  971  44  1  598  998  678  379  58  84  681  212  967  260  263           extract numbers from string       thenum   input match   0-9   g  join            totalnums   thenum length        last10Digits   parseInt thenum    10000000000        ISDcode   thenum substring 0  totalnums - 10          phone numbers are generally of 8 to 16 digits     if  totalnums  gt   8  amp  amp  totalnums  lt   16          if  ISDcode            if  ISD CODES includes parseInt ISDcode                return true            else             return false                    else           return true                    catch  e        return false     console log isPhoneNumber  91-9883208806     x000D   x000D   x000D

User · Answer

Try this one - it includes validation for international formats too          1 - 1 s 1  d 3  -  d 3  s        d 3      d 3    -  s    d 3    -  s    d 4    g  This regex validates the following format     541  754-3010  Domestic  1-541-754-3010  International 1-541-754-3010  Dialed in the US 001-541-754-3010  Dialed from Germany 191 541 754 3010  Dialed from France

User · Answer

try this           d 2        d 2       - s     d 2    - s     d 2   - s     d 0 9   im   valid formats     123  456-7890  123 456-7890 123-456-7890 123 456 7890 1234567890  31636363634  3 123  123-12-12  3 123 123-12-12  3 123 1231212  3 123  12312123 075-63546725

[javascript] Validate phone number with JavaScript

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