Validate (Australian) Phone Numbers in Javascript

javascript regex forms validation

21,983

Solution 1

Here is a regex that I would recomment

var pattern = /^0[0-8]\d{8}$/g;

So input must start with 0, and followed by a digit and it must be one between 0-8. Then it must have 8 more digit numbers.

Valid phone number examples:

0010293999 (ok)

0110293999 (ok)

0210293999 (ok)

0910293999 (nope)

//Implementation

 ........
 var phoneNumber =document.forms["form3"]["phone"].value;
 var phonePattern = /^0[0-8]\d{8}$/g;
 //phone number is not valid. Please notice that you don't need to check if it's empty or null since Regex checks it for you anyways
 if (!phoneNumber.test(phonePattern))
   {
   alert("Please Enter your Phone or Mobile Number - Preferably Phone Number");
   return false;
   }
 ..........

---- Edit

........
     var phoneNumber =document.forms["form3"]["phone"].value;
     var phonePattern = /^0[0-8]\d{8}$/g;
     //phone number is not valid. Please notice that you don't need to check if it's empty or null since Regex checks it for you anyways
     if (!phonePattern.test(phoneNumber))
       {
       alert("Please Enter your Phone or Mobile Number - Preferably Phone Number");
       return false;
       }
     ..........

Solution 2

Thanks to Paul Ferrett for this (php not js, but the regex should translate):

<?php
function validate_phone($number) {
  $number = preg_replace('/[^\d]/', '', $number);
  return preg_match('/^(0(2|3|4|7|8))?\d{8}$/', $number)
    || preg_match('/^1(3|8)00\d{6}$/', $number)
    || preg_match('/^13\d{4}$/', $number);
}

NB: "MIT License"

21,983

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Webnerdoz

A SEO lover, web designer, CSS lover, Google Adwords qualified professional, marketing graduate, out of the box thinker, enthusiastic, commercially grounded, Business growth catalyst. I enjoy blogging about SEO and Webmaster related stuff. Xtras - I blog and support the open source. I am into sports, play soccer and basketball in a regular basis. other Passions: philosophy, traveling, gym, networking, socializing, beach, mentoring and experiencing new things.

Updated on July 22, 2022

Comments

Webnerdoz almost 2 years

I need to validate Australian phone numbers (e.g. 02[3-9]\d{7} or 07[3-9]\d{7} or 04[\d]{8}) in JavaScript.

Requirements:

must be 10 digits
no commas
no dashes
no + in front
must begin with 0

At the moment I can validate required fields and email address but I want to add phone number validation.

<html>
<head>

<script type="text/javascript">
function validateForm() {
 var x=document.forms["form3"]["name"].value;
 if (x==null || x=="") {
   alert("Name must be filled out");
   return false;
 }
 var s=document.forms["form3"]["phone"].value;
 if (s==null || s=="") {
   alert("Please Enter your Phone or Mobile Number - Preferably Phone Number");
   return false;
 }
 var s=document.forms["form3"]["email"].value;
 if (s==null || s=="") {
   alert("Please Enter a valid email address");
   return false;
 }
 var k=document.forms["form3"]["email"].value;
 var atpos=k.indexOf("@");
 var dotpos=k.lastIndexOf(".");
 if (atpos<1 || dotpos<atpos+2 || dotpos+2>=k.length) {
   alert("Email Address is Not Valid. Please provide your correct email address.");
   return false;
 }
}
</script>
</head> 
<body>

<form action="/thank-you.php" name="form3" method="post" onsubmit="return validateForm();" >
Your name* <input type="text" name="name" />    
Phone number* <input type="text" name="phone" />
Email* <input type="text" name="email" />
<input type="submit" value="sumbit" name="submit" class="button" onclick="javascript:return validateMyForm();" /><input type="reset" value="Reset" class="resetbutton" />
</form>

</body> 
</html>

Can someone help out?

Webnerdoz about 11 years

Nah didn't work. just added your code but it sends the web message without validating all fields.
Webnerdoz about 11 years

thanks. This one works like a charm. The problem is the error message for phone field is different from other JavaScript error messages...
Webnerdoz about 11 years

Nah on second thought, this one doesn't work when filling the form through the IE browsers.
Jason about 11 years

I thought you are asking about regex for phonenumber?
Jason about 11 years

I am sorry, there was a small error from the example code. it must be !phonePattern.test(phoneNumber) instead of !phoneNumber.test(phonePattern)
Eric about 11 years

There's nothing special about required pattern=. That's just two attributes, pattern=, and required.
Jason about 11 years

developer.mozilla.org/en-US/docs/JavaScript/Reference/…
Jason about 11 years

Basically test is not a function of a String =/
Webnerdoz about 11 years

All good now. Thanks heaps. sorry I am not able to vote you up as I don't have 15 reputation yet. I'll def do it in the future. Thanks again.
Luke Stevenson about 8 years

Some of the provided patterns would not match Australian phone numbers, as per OP question. Numbers starting 05, for instance, would not be valid for Australia, for instance. australia.gov.au/about-australia/facts-and-figures/…