IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone number, but I am running
into an odd problem. I split the phone number entry form into three textboxes the
first one for area code (ie must be 3 numbers) and then the two parts of the phone
number (ie must be 3 numbers and then must be 4 numbers). I check to make sure the
length of each textbox is correct and then I try to check if they are numeric, however
it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not IsNumeric("attributes.custPhone2")
or not IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please enter a valid phone
number.br"
/cfif
The strange part is that when I take out the not IsNumeric() statements for the first
two form variables it works fine. Ideas???
-Greg
~~
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RE: IsNumeric Function
Functions like isDefined, evaluate, and setVariable use quotes around the
variable name because you are sending them a variable _name_ to be
processed. IsNumeric is being passed a _value_ to be processed, so
therefore shouldn't have the quotes around the variable name. In your code
the isNumeric function is processing a string of "attributes.custPhone1"
rather than the value of the variable attributes.custPhone1.
Or so I understand it to be . . . :^)
Dan
-Original Message-
From: Greg Wolfinger [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 15, 2000 8:36 AM
To: CF-Talk
Subject: IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone number, but I am
running into an odd problem. I split the phone number entry form into three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please enter a valid phone
number.br"
/cfif
The strange part is that when I take out the not IsNumeric() statements for
the first two form variables it works fine. Ideas???
-Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
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RE: IsNumeric Function
What does your error say?
-Original Message-
From: Greg Wolfinger [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 15, 2000 11:36 AM
To: CF-Talk
Subject: IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone
number, but I am running into an odd problem. I split the
phone number entry form into three textboxes the first one
for area code (ie must be 3 numbers) and then the two parts
of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is
correct and then I try to check if they are numeric, however
it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please
enter a valid phone number.br"
/cfif
The strange part is that when I take out the not IsNumeric()
statements for the first two form variables it works fine. Ideas???
-Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Fw: IsNumeric Function
Maybe its a operator precedence problem. Try doing if (IsNumeric(...) is
false) or (...) or (...).
-Bill
/intraget
- Original Message -
From: Greg Wolfinger [EMAIL PROTECTED]
To: CF-Talk [EMAIL PROTECTED]
Sent: Friday, December 15, 2000 11:36 AM
Subject: IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone number, but I am
running into an odd problem. I split the phone number entry form into three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
/cfif
The strange part is that when I take out the not IsNumeric() statements
for the first two form variables it works fine. Ideas???
-Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
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Re: IsNumeric Function
You shouldn't need the quotation marks around the parameter passed to
IsNumeric(). Try that.
--
Jamie Keane
Programmer
SolutionMasters, Inc.
9111 Monroe Rd., Suite 100
Charlotte, NC 28270
www.solutionmasters.com
704.563.5559 x 228 Voice
704.849.9291 Fax
-Original Message-
From: Greg Wolfinger [EMAIL PROTECTED]
To: CF-Talk [EMAIL PROTECTED]
Date: Friday, December 15, 2000 12:28 PM
Subject: IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone number, but I am
running into an odd problem. I split the phone number entry form into three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
/cfif
The strange part is that when I take out the not IsNumeric() statements for
the first two form variables it works fine. Ideas???
-Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
Partricia:
When I said "throw an error" I meant it will set my attributes.error var to
"Please enter a valid phone number", meaning that the if statment I wrote
was true. I figured out the problem though, it was because I was using
quotes, however, I'm not sure why the third variable worked with the quotes
around the variable name.
-Greg
- Original Message -
From: "Patricia Lee" [EMAIL PROTECTED]
To: "CF-Talk" [EMAIL PROTECTED]
Sent: Friday, December 15, 2000 12:41 PM
Subject: RE: IsNumeric Function
What does your error say?
-Original Message-
From: Greg Wolfinger [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 15, 2000 11:36 AM
To: CF-Talk
Subject: IsNumeric Function
Hey Guys/Gurls:
I am trying to do some server side validation for a phone
number, but I am running into an odd problem. I split the
phone number entry form into three textboxes the first one
for area code (ie must be 3 numbers) and then the two parts
of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is
correct and then I try to check if they are numeric, however
it will throw an error.
My code looks something like this:
cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
cfset attributes.error = attributes.error "Please
enter a valid phone number.br"
/cfif
The strange part is that when I take out the not IsNumeric()
statements for the first two form variables it works fine. Ideas???
-Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
J
: I am trying to do some server side validation for a phone number, but I am
running into an odd problem. I split the phone number entry form into three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
:
: My code looks something like this:
:
: cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
: cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
: /cfif
:
: The strange part is that when I take out the not IsNumeric() statements
for the first two form variables it works fine. Ideas???
:
: -Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
Yeh Joel, I am also doing JS validation, but if someone who is trying to
hack the site disables their javascript or is someone just doesnt have a js
browser and enters incorrect info, then I am in trouble. The server side is
sort of a back-up validation, just in case. Thanks for the tip though.
-greg
- Original Message -
From: "Joel Firestone" [EMAIL PROTECTED]
To: "CF-Talk" [EMAIL PROTECTED]
Sent: Friday, December 15, 2000 2:09 PM
Subject: Re: IsNumeric Function
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
J
: I am trying to do some server side validation for a phone number, but I
am
running into an odd problem. I split the phone number entry form into
three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
:
: My code looks something like this:
:
: cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
: cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
: /cfif
:
: The strange part is that when I take out the not IsNumeric() statements
for the first two form variables it works fine. Ideas???
:
: -Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
You should use javascript client-side script to validate the datas before
submitting.
You can use something like this :
if (document.formname.inputname.length == 3
isNaN(document.formname.inputname.value)
{
alert('Invalid');
}
- Original Message -
From: "Joel Firestone" [EMAIL PROTECTED]
To: "CF-Talk" [EMAIL PROTECTED]
Sent: Friday, December 15, 2000 2:09 PM
Subject: Re: IsNumeric Function
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
J
: I am trying to do some server side validation for a phone number, but I
am
running into an odd problem. I split the phone number entry form into
three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
:
: My code looks something like this:
:
: cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
: cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
: /cfif
:
: The strange part is that when I take out the not IsNumeric() statements
for the first two form variables it works fine. Ideas???
:
: -Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
I agree with Joel. Using JavaScript to process on the client side is fast and doesn't
need to hit the CF server. I always
use this to check numeric value: ( I am sure many of you already know how to do this,
but I am posting it for those who
might not know.)
===
script language="Javascript"
function checkfield()
{
if (isNaN(document.forms[0].phone.value))
{alert ("Sorry, but you must enter a numeric value.")
document.forms[0].phone.focus();
return false;
}
}
/script
===
Joel Firestone wrote:
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
J
: I am trying to do some server side validation for a phone number, but I am
running into an odd problem. I split the phone number entry form into three
textboxes the first one for area code (ie must be 3 numbers) and then the
two parts of the phone number (ie must be 3 numbers and then must be 4
numbers). I check to make sure the length of each textbox is correct and
then I try to check if they are numeric, however it will throw an error.
:
: My code looks something like this:
:
: cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
: cfset attributes.error = attributes.error "Please enter a valid
phone number.br"
: /cfif
:
: The strange part is that when I take out the not IsNumeric() statements
for the first two form variables it works fine. Ideas???
:
: -Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: IsNumeric Function
This is a good first check, but I would never blindly trust any sort of
client-side data validation. This is just inviting hackers to have a
field day.
Kevin
[EMAIL PROTECTED] 12/15/00 03:04PM
I agree with Joel. Using JavaScript to process on the client side is
fast and doesn't need to hit the CF server. I always
use this to check numeric value: ( I am sure many of you already know
how to do this, but I am posting it for those who
might not know.)
===
script language="Javascript"
function checkfield()
{
if (isNaN(document.forms[0].phone.value))
{alert ("Sorry, but you must enter a numeric value.")
document.forms[0].phone.focus();
return false;
}
}
/script
===
Joel Firestone wrote:
One way I found useful was to use JavaScript on the client-side
to test if they were numbers or not. Then you know only numbers
are being submitted.
J
: I am trying to do some server side validation for a phone number,
but I am
running into an odd problem. I split the phone number entry form
into three
textboxes the first one for area code (ie must be 3 numbers) and then
the
two parts of the phone number (ie must be 3 numbers and then must be
4
numbers). I check to make sure the length of each textbox is correct
and
then I try to check if they are numeric, however it will throw an
error.
:
: My code looks something like this:
:
: cfif not IsNumeric("attributes.custPhone1") or not
IsNumeric("attributes.custPhone2") or not
IsNumeric("attributes.custPhone3")
: cfset attributes.error = attributes.error "Please enter a
valid
phone number.br"
: /cfif
:
: The strange part is that when I take out the not IsNumeric()
statements
for the first two form variables it works fine. Ideas???
:
: -Greg
~~
Structure your ColdFusion code with Fusebox. Get the official book at
http://www.fusionauthority.com/bkinfo.cfm
Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/
Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
