JavaScript ASP Tutorial error handling _asp Basics

The ASPError Object has zero (0) Methods, nine (9) Properties, zero (0) Events, and zero (0) collections.

ASPCode

ASPDescription

Category

Column

Description

File

Line

Number

Source

The way you access the ASPError Properties are with a Server method. Yeah, I know; It doesn ' t make sense. Start with something like var myerror=server.getlasterror () And then can access all nine ASPError Properties following this pattern: <%=myError.Line%> .

Below is the script for Lesson 15.

<% @LANGUAGE = "JavaScript"%> <!--METADATA type= "typelib" file= "C:\Program Files\Common" files\system\ado\ Msado15.dll "--> <% try {Response.Write (" <strong>use <i>getlasterror () </i><br></ Strong>\r ") Myerror = Server.GetLastError () Response.Write (" Myerror.line: "+ myerror.line +" <BR>\r ") Respons E.write ("Myerror.file:" + myerror.file + "\ r") Response.Write ("<HR>\r<STRONG>") Response.Write ("Now int Entional error ... ") Response.Write (" <br></strong>\r ") Myerror = erver. GetLastError ()//this line causes a error Response.Write ("Myerror.line:" + myerror.line + "<br>\r") Response.wri Te ("myerror.file:" + myerror.file + "<br>\r")} catch (Mydumberror) {Response.Write ("There is a error:" + my
	Dumberror)%> <BR> graceful error handling goes here (inside the catch statement). Make it as simple or sophisticated as your like.<br> <HR> <strong>now let's break doWN the error object.</strong><br> <% for (var i in Mydumberror) {Response.Write (i + ":" + mydumber Ror[i] + "<br>\r")}} finally {Response.Write (" 
Click here to run the script in a new window.
 
Okay, so what happened to on Error Resume Next? Sorry, that Ain ' t no JavaScript thing. So, what about onerror? That's won ' t work on the server side. But to some core JavaScript we have some error handling.
 
The section's script for which your wish to provide error handling goes inside the try {} statements and the WHA T-to-do in the event of a error goes inside the catch {} statement. There is also a finally {} statement (optional). The whole thing is just as graceful as on Error (in my opinion).
 
Not every ASP server allows for access to the ASPError Object. So, don ' t is surprised if ASPError gives you an error.