JScript, ASP: Validation

I looked for this everywhere and I cannot find my answer, everyone uses VBScript. :(

What I have is a query that passes in a few values.

myPage?num=1&text=hi

in my ASP statement I do

Code:

---

num = Request('num');
text = Request('text');

---

If I pass in myPage?num=1 it will return an undefined value for text. I know if I tried

Code:

---

if(text == 'undefined')
 //work here

---

it will not work. Neither will using null or ''. Can I somehow validate my vars and prevent this?

I tried using try and catch but these did not work.

Thanks for any help. I'm at the end of the road for this one.

I'm not really following you. What are you trying to achive?
Check passed values with client side Java Script? I'm really confused.:confused:

Sorry for confusion.

What i mean is this:

myPage.asp

Code:

---


var intOrder = Request('order');
var intNum = Request('num');

---

In order for the request to work, myPage would have to be accessed like so:

myPage.asp?order=1&num=2

correct? But if the user took out order

myPage.asp?num=2

when I try to do work with intOrder, it will be null, or undefined. I need to be able to see if this is the case.

I tried using

if(intOrder == "null)
if(intOrder =="undefined)
if(intOrder == '')
then change intOrder to a valid var.

ect ect. and none of my solutions work.

Hope that helps
-----

So in summary, all i want to know how to do is make sure my Requested variables are valid.

OK,
in ASP I use this:

Code:

---


intOrder=request("order")

if intOrder="" then intOrder=0

OR

if Len(intOrder)=0 then intOrder=0

---

In ASP all variables are Variant type. You could convert its value by using CDbl, CInt, Int, CCur, etc.

Another thing: If you try to operate intOrder in JavaScript function, you need to pass your arguments as so:

Code:

---

<script language="JavaScript">
function showValue(intOrder){
    alert(intOrder);
}
</script>

<%
Dim intOrder

intOrder=request("order")
if len(intOrder)=0 then intOrder=0

%>

<input type="button" name="ShowValue" value="Show Value" onclick="showValue(<%=intOrder%>)">

---

I hope I made myself clear.

I understand what you mean but that dosent work. Here is my code:

Code:

---

<%@ Language="Javascript" %>

<%
        var intOrd = parseInt(Request('ord')); //Asc or Desc

       
       
        if (intOrd == '0)  //Also tried == '' and == ""
                Response.Write("Blank field");
%>

---

I know that len does not exist when coding ASP in JScript, it only works with VBScript. I'm wondering if there is a substring function or something.

Anyhow, I have no clue. Any other ideas?
Thanks for all the help anyways.


BTW: If I write out intOrd it has a value of 1.#QNAN
***?

I think I may have to resort to:

if( (intOrd > 0) && (intOrd < 5) )

or something like that. :(

why not just validate using VBSCRIPT, its easier

Well my whole entire site is made in JScript so switching to VB script wouldent be possible. (It calls external JS files ect. ect)

So i really have to use javascript, perhaps in the future I will think about VBScript. ;)

Well if anyone else is interested, I solved the problem for Integers ONLY.

after you do

whatever = parseInt(Response('var'));

you can then just simply do

if(!whatever)
whatever = right value.


I'm still working on strings.