When you use server-side Visual Basic Scripting Edition (VBScript) or JScript, you can build a reusable object for debugging that can be easily included in Active Server Pages (ASP) pages during development. Why use this approach rather than the Microsoft Visual InterDev debugger? If the Visual InterDev debugger is already set up, it is the best option for stepping through code to isolate all kinds of run-time errors because it has advanced features. However, the Visual InterDev debugger can be difficult to set up and use. It also consumes a lot of resources on the Web server, which can create a problem if you have multiple sites, users, or developers on that server while you are debugging.
