Solved

# Regular Expression for UK phone number.

Posted on 2006-10-30
1,037 Views
I am trying to develop a Regular Expression to validate a UK telophone number, with the following criteria:
* Numbers or spaces only.
* Cannot enter less than 10 or more than 15 numbers.
Ie. valid:

01865 215487
01865215487
020 3265 9854

This was my attempt but its not quite right:

var regex = /^0\d{4}(\s{0,1})\d{6}\$/
0
Question by:jonatec
[X]
###### Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

• Help others & share knowledge
• Earn cash & points
• 2

LVL 30

Accepted Solution

callrs earned 250 total points
ID: 17832313
0

LVL 30

Expert Comment

ID: 17887420
Thanks.  Code for reference:

<script type="text/javascript">
<!-- Verify UK Phone number -->

var rx1 = /^0\d{4}\s?\d{6}\$/
var rx2 = /^0\d{2}\s?\d{4}\s?\d{4}\$/
var rx3 = /^0\d{10,15}\$/

// test for rx1 and rx2 patterns
var p=new Array("01865 215487","01865215487","020 3265 9854","01234 5678 9012 34","0ab123457890");
var o="";
for (i=0; i<p.length; i++){
var tested=rx1.test(p[i])
if(!tested) tested=rx2.test(p[i])
o=o+p[i]+": "+tested+"\n"
}

// test for rx3, after trimming out spaces
o="After trimming spaces to allow for 10 to 15 digits\n";
for (i=0; i<p.length; i++){
var newp=p[i].replace(/\s*/g,"");
var tested=rx3.test(newp)
o=o+p[i]+": "+tested+"\n"
}

</script>
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

### Suggested Solutions

Avoid defining the variables in the global scope; trying to define them in a local function scope. Because:   • Look-up is performed every time a variable is accessed.   • Variables are resolved backwards from most specific to least specific scope…
In my daily work (mainly using ASP.net), I need to write a lot of JavaScript code. One of the most repetitive tasks I do are the jQuery Ajax calls. You know: (CODE) I don't know if for you it's the same, but for me is soooo tedious to write the …
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…
###### Suggested Courses
Course of the Month3 days, left to enroll