Mixing Javascript and VBscript on a single ASP 3.0 Page

No. The object model on client side and server side are different. For example a field on the client side is accessed as document.FormName.TextFieldName.value while the same field on the server side is accessed as Request("TextFieldName"). So client code can't be used on the server and the server code can't be used on the client.

Hi Si,

Thanks for your comment. When I try to include two different languages on a single page I am confronted with the error "Page Command Repeated".

If I remove the @ then I get either a javascript error or a vbscript error once the server tries to process the other language. How do I have BOTH Javascript and vbscript on the same page?

~Corey

Hi Amit,

I know that the object models are different, what I am doing is passing the validation functions values and processing their return values in the appropriate places. For example, client side I am passing in document.MyForm.MyField.value and server side I would pass in Request("MyField") (if I could get it to work that is).

~Corey

Even then a single page can only have one language. So you will have to use Javascript as server language while most prefer using VBScript on the server. Using VBScript on the client is an option but that would limit your application to IE only.

Ahh I see amit,

So my original assumption that it is possible to have both serverside javascript and serverside vbscript on a single page is false. Which is to say that you can not have both languages on one page. Is that correct?

~Corey

btw there is a technical explanation of why the order of execution is not as expected

http://blogs.msdn.com/ericlippert/archive/2004/02/19/76438.aspx#76445

It is not possible to mix langauges in ASP.NET because of its compiled nature.

Hi Si,

So using this technique, is there a way to dynamically determine whether the code should be executited as serverside jscript or client side javascript?

There is, I do remember having issues with doing so down to it being a little confusing when coding but it was a while back, I'll see if i find any info on it.

The reason I had to do this was I had written some stuff and a collegue had also written a library which i wanted to use but did not have time to re-write it - so instead used this technique to acheive the result. It is not a method i would recommend normally though as maintenance obviously becomes a pain when the code is harder to read.

basically you can still use response.write("<script language=javascript>....</script>") to output it as client side scripting.

I rememeber having a problem with this but cannot remember what it was *(was something silly but not so obvious), anyway i got it working in the end .. best bet i think is to give it a try with some dummy code 1st.

Hi, you can have both languages running server side,

if you're page is VB then just include your JS code within a <script language="JavaScript" runat="server"></script> or vice versa.

I develop in JS and i have serverside vb function as well.