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ASP VBScript Reference

Look up common operations by their input and result.

How it works

A useful reference states what an operation accepts and returns, rather than listing names without context. These small calls cover text, array bounds, numeric conversion and Null detection. The earlier lessons explain the decisions behind each family. The Server, Request, Response, Session and Application objects belong to ASP, not the VBScript language itself.

Use the separate Windows lab

This is a legacy-maintenance course. Classic ASP uses IIS and VBScript; ASP.NET Web Pages uses .NET Framework and Razor. Neither runs in PHP, Apache or Bhylu’s browser playground. The reviewed baseline is 32-bit IIS Express 10.0.2001, .NET Framework 4.8, Web Pages / Razor 3.2.9 and the Windows VBScript engine. ADO database examples use the actual 32-bit Jet OLE DB 4.0 provider, not SQL Server or XAMPP MySQL.

Download download-lab.mjs into a separate empty learning folder. Run node download-lab.mjs to fetch hash-checked source files into a new bhylu-asp-lab folder, then cd bhylu-asp-lab and node run-lab.mjs --start. Before deployment, local preview uses node download-lab.mjs http://127.0.0.1:8000/examples/asp/. The source downloader refuses an existing destination. Review its source before running it.

The foreground launcher needs your own 32-bit IIS Express installation with Classic ASP, .NET Framework 4.8 and the VBScript engine available. It downloads the three pinned Web Pages packages from NuGet into its private cache, binds only localhost on port 8142 and stops when you press Ctrl+C. Keep its console open. Visit http://localhost:8142/reference.asp. It does not install IIS, enable Windows features, change Apache/PHP/MySQL, or publish any files. See the bundled README.txt for manual setup and test boundaries.

Each complete Classic ASP source requires the supplied Global.asa acknowledgement; Web Pages uses _PageStart.cshtml. Database and file examples create owned temporary files only under this private lab’s blocked App_Data folder. Sources are public text downloads; do not upload them as executable teaching endpoints on Bhylu.

Download reference.asp

Example

reference.asp

<%@ Language="VBScript" CodePage="65001" %>
<% Option Explicit
Response.Buffer = True
Response.ContentType = "text/plain"
Response.Charset = "utf-8"
If Application("BhyluLab") <> "YES" Then
    Response.Status = "403 Forbidden"
    Response.Write "Use the separate Bhylu learning lab."
    Response.End
End If
Dim parts
parts = Split("Mending|Buttons", "|")
Response.Write UCase("mend") & vbLf
Response.Write Mid("Workshop", 1, 4) & vbLf
Response.Write (UBound(parts) - LBound(parts) + 1) & vbLf
Response.Write CInt("2") & vbLf
Response.Write IsNull(Null)
%>
Focus on the lesson operations

This excerpt omits shared lab setup. Use the complete download and supporting files to run it.

Lesson excerpt

Dim parts
parts = Split("Mending|Buttons", "|")
Response.Write UCase("mend") & vbLf
Response.Write Mid("Workshop", 1, 4) & vbLf
Response.Write (UBound(parts) - LBound(parts) + 1) & vbLf
Response.Write CInt("2") & vbLf
Response.Write IsNull(Null)

Expected result

MEND
Work
2
2
True

Mid uses one-based character positions, unlike the zero-based array returned by Split. CInt accepts representations beyond the narrow quantity grammar used by the forms lesson; conversion should follow validation. ADO Record and provider-specific Properties are separate capabilities, not aliases for Recordset or Field.

Primary references

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