In my page, i have one javascript function call DapatNilai(). How could i call this function in ASP. I want to display the function result and save it as data.

Well here's an example of calling a JavaScript function:

Response.Write "<script type='text/javascript'>alert('Yet to be developed.');</script>"

And here's a little more info about mixing server-side ASP (which gets processed first) with client-side JavaScript.

It's easy to use the value of a VBScript variable in JavaScript:
document.writeln('<%= MyVBScriptVariable %>');

Or here is an example which puts the value of a VBScript variable into a JavaScript alert box:
Response.Write "<script language='JavaScript'>alert('The value is " & MyVBScriptVariable & "');</script>"

But to send the value of a JavaScript variable to VBScript, well that's another story. You could have the JavaScript fill in a hidden form field and then post the form. That way VBScript can pick up the value of the hidden form field with Request.Form("MyFieldName")

Thank q for your help. it solve my problem.