Javascript to Validate the Phone Number Field Using Javascript :-)

[Abhishek]

Hi this is my another validator in javascript to validate the Phone
Number


<script language='javascript'>
function funcCheckPhoneNumber(ctrtxtMobile,e){
if(window.event){
var strkeyIE = e.keyCode
if(((strkeyIE >= 48) && (strkeyIE <= 57 )) || (strkeyIE >= 40) &&
(strkeyIE <= 41 ) || (strkeyIE == 32) || (strkeyIE == 46)||(strkeyIE
== 45) ){}
else{
return false;}}
else{
var strkeyCode = e.keyCode
var strCharCode = e.charCode
if(((strCharCode >= 48) && (strCharCode <= 57 )) || ((strCharCode

= 40) && (strCharCode <= 41 )) || (strCharCode == 45) ||

(strCharCode==32)|| (strkeyCode==37 )|| (strkeyCode==38) ||
(strkeyCode == 46)||(strCharCode==46)||(strkeyCode==8 ) || (strkeyCode
==9 ) ||(strkeyCode==39) || (strkeyCode ==35) || (strkeyCode ==36) ||
(strkeyCode==9)){}
else{
return false;}}
return true;}

function valFuncReg_PhoneNumber(text,reg){
if(text == null || text == '')return true;
if(reg == null || reg =='')return true;
var regex = new RegExp(reg);var value=text;
var res= (regex.exec(text));
if(res==null){
reg =/^\d*$/;
regex = new RegExp(reg);
res= (regex.exec(text));
}
return (res != null && value == res[0]);}
</script>

The above script can be called on "Onkeypress" event of the TextBox as
follows :

"Onkeypress", "javascript:return funcCheckPhoneNumber(this,event);"


Please feel free to give Comments and Suggessions and Bugs also

 

[Thomas 'PointedEars' Lahn]

Hi this is my another validator in javascript to validate the Phone
Number
[...]
Please feel free to give Comments and Suggessions and Bugs also

Please stop posting your clueless, invalid junk code (here). Thanks in advance.


PointedEars

 

[RobG]

Hi this is my another validator in javascript to validate the Phone
Number

It is much more efficient and a lot less code to use a regular
expression, something like:

function isPhoneChars(n) {
return /^[0-9 ()]*$/.test(n);
}

Forms are much more usable if you do not prevent input if errors are
detected, warn users of errors and let them fix it themselves, e.g.


<script type='text/javascript'>

function isPhoneChars(n) {
return /^[0-9 ()]*$/.test(n);
}

function validate(el) {
if (el.id == 'phone') {
var errEl = document.getElementById('phone_ErroMessage');
if (!isPhoneChars(el.value)) {
errEl.style.visibility = 'visible';
} else {
errEl.style.visibility = 'hidden';
}
}
}

</script>


<input type="text" id="phone" onkeyup="validate(this);">
<span id="phone_ErroMessage"
style="color: red; font-weight: bold; visibility: hidden;"

Phone number must be digits, spaces and brackets only</span>

A quick example only, not intended for production use. Validate at
the server always.

 

[Dr J R Stockton]

In comp.lang.javascript message <619396d5-74a5-4b69-8d81-3e22cf669744@a8
g2000prf.googlegroups.com>, Tue, 5 Aug 2008 00:05:36, RobG

function isPhoneChars(n) {
return /^[0-9 ()]*$/.test(n);
}

That accepts unreasonably short numbers, including "". There is
probably a known minimum length for phone numbers - the Falklands seem
to use 5 digits internally, for example, and Ascension maybe 4. There's
also, IIRC, a maximum allowable length, maybe larger than expected. The
OP should consult ITU recommendations before proceeding.

That allows characters ( ) which cannot be dialled. For consistency, it
should also allow the characters + and - which occur in standard and/or
common forms of printed number.

Since, as well as 0 1 2 3 4 5 6 7 8 9, there are keys for * and #, could
it be that those also ought to be allowed?

<URL:http://www.merlyn.demon.co.uk/js-valid.htm#VTN> refers. Also
<http://en.wikipedia.org/wiki/Telephone_numbers>.

 

[Abhishek]

Hi this is my another validator in javascript to validate the Phone
Number
[...]
Please feel free to give Comments and Suggessions and Bugs also

Please stop posting your clueless, invalid junk code (here). Thanks in advance.

PointedEars
--
realism: HTML 4.01 Strict
evangelism: XHTML 1.0 Strict
madness: XHTML 1.1 as application/xhtml+xml
-- Bjoern Hoehrmann

Hi Bjoern Hoehrmann, I m sure u haven't tried to run this code, this
code not just for validating the Phone Number, but it has some more .
But anways thanks for ur useful comment regarding my "JUNK POST"..
Keep Posting

 

[David Mark]

Hi this is my another validator in javascript to validate the Phone
Number
[...]
Please feel free to give Comments and Suggessions and Bugs also

Please stop posting your clueless, invalid junk code (here).  Thanks in advance.

PointedEars
--
    realism:    HTML 4.01 Strict
    evangelism: XHTML 1.0 Strict
    madness:    XHTML 1.1 as application/xhtml+xml
                                                   -- Bjoern Hoehrmann

Hi Bjoern Hoehrmann, I m sure u haven't tried to run this code, this

Oh brother. I'm sure he hasn't either.

code not just for validating the  Phone Number, but it has some more .

How very.

But anways thanks for ur useful comment regarding my "JUNK POST"..
Keep Posting

Nice attitude. And if you could refrain from posting junk here, that
would be good too!