Solved

VB Script IsNumeric Function and the dollar sign

Posted on 2010-09-23
8
1,660 Views
Last Modified: 2012-05-10
Hi - I have a classic ASP page that uses VBScript and I need some help.  

I have a form that allows a user to enter a budget amount.  I want to insure the value the user enter EXCLUDES the dollar sign ($) and the comma (,).  

Example:

$10,500.00 (False)

10500.00 (True)

I wrote this to test the value entered...

If NOT IsNumeric(strBudget) THEN
  ' message
End If

.... but IsNumeric allows the dollar sign and comma and returns True.  

Is there another function that I could use to test the value entered?  I want to make sure the user isn't entering a dollar sign or a comma.

Thanks.
0
Comment
Question by:cdemott33
8 Comments
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744645
You may want to use Regular Expressions, and test on this pattern:^\d\.?\d*$
0
 
LVL 28

Expert Comment

by:strickdd
ID: 33744659
You will have to check for the existence of the "$" and "," on top of the IsNumeric check. Use the InStr function to do this: http://www.w3schools.com/VBscript/func_instr.asp
0
 
LVL 92

Accepted Solution

by:
Patrick Matthews earned 500 total points
ID: 33744663
For more about using RegExp to validate entries in ASP:http://www.4guysfromrolla.com/webtech/120400-1.shtml
0
 

Author Comment

by:cdemott33
ID: 33744678
matthewspatrick - Can you provide an example of how I could do this?
0
Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

 
LVL 13

Expert Comment

by:samic400
ID: 33744684
If you could use javascript -

script would be this -
function validateNumberField (objEvent)
        {
        var iKeyCode;
            iKeyCode = objEvent.charCode ? objEvent.charCode : objEvent.keyCode;
      if(iKeyCode>=48 && iKeyCode<=57) return true;
        if (iKeyCode == 8) return true;
        return false;
      }

then your code would have something like this:
<input type="text" size=1 name="month" id="month" onKeyPress="return validateNumberField(event);">

and only allow numbers.
0
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744685
>>You will have to check for the existence of the "$" and "," on top of the IsNumeric checkAnd that's not all.  For example, these return true as well:IsNumeric(" 1234")IsNumeric("1234 ")IsNumeric(" 1234 ")RegExp is looking better and better :)
0
 
LVL 92

Expert Comment

by:Patrick Matthews
ID: 33744875
For an example, see:http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/ASP/Q_21591244.htmlNote that you should use the pattern string I supplied in my first comment...
0
 

Author Closing Comment

by:cdemott33
ID: 33744911
Thank you.  Using a regexp match worked perfectly.
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Hello, all! I just recently started using Microsoft's IIS 7.5 within Windows 7, as I just downloaded and installed the 90 day trial of Windows 7. (Got to love Microsoft for allowing 90 days) The main reason for downloading and testing Windows 7 is t…
Introduction During my participation as a VBScript contributor at Experts Exchange, one of the most common questions I come across is this: "I have a script that runs against only one computer. How can I make it run against a list of computers in …
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
This video explains how to create simple products associated to Magento configurable product and offers fast way of their generation with Store Manager for Magento tool.

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now