empty data fields

[920506]

Hi everyone,
Recently, I am investigating a bug of javascript problem in our asp page. Somehow it always crashed in the same places in one of our asp pages for 10 times. The data fields are empty, with those fields, I collected data using JavaScript(not backed up by asp program)
But I cannot duplicate the case in my windows XP and 2000. Then suddenly I found 8 of 10 have this log text:
---UserAgent Mozilla/4.0 (compatible; MSIE 5.23; Mac_PowerPC)
*MSIE version could be different in this line, most of them is 5.22 and some are 5.0 and 5.23

I don't know the exact meaning of the line, it seems like IE installed on MAC operating system, it seems like our program doesn't work the same way as it is on windows system with IE or firefox installed etc. We only tested on windows with IE, firefox and AOL.
Am I close to the origination of the problem source?
Thank you.
Betty

 

[onpnt]

sorry I didn't understand the problem well. Are you refereing to client side javascripting or server side? What is the bug? What event causes it and what is the result of the broken process

Is this a Mac with IE?


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[920506]

Hi onpnt,
I mean client side javascript,server side is VBscript.

The error message is:
CInt(afieldnum)-->type mismatch,
because the afieldnum is empty.
I used javascript to collect data for this field.
When code try to display the field:

Response.Write CInt(afieldnum)
The program crashed.
Betty

 

[onpnt]

You'll need to catch the fact it's empty prior to running any built in conversion functions in any programming language. vbscript is poor at really doing this and in all the built in functionality. Basically you have to check for Null, blank an empty to cover your points.

Creating a function to handle this is of course the cleanest way to take care of it.

Something like

function validateValue(val)
  If IsNull(val) OR val = "" OR IsEmpty(val) Then
     validateValue = 0
  Else
     validateValue = val
  End If
end function

Response.Write  validateValue(CInt(afieldnum))

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