Error handling

[KeithTrangmar]

I hope this is the right forum to ask in.

I'm using a JS-based script under the Windows Scripting Host to run a series of processes. One of them has started failing occasionally, and as I don't have any error handling yet built into my script, the whole thing just dies at that point. I want to be able to take some appropriate action & recover gracefully.

In the context of a web page I've just used a function called "onerror" in the past, but this doesn't appear to have any effect in this environment. I'm sure there must be a way of doing it, but half an hour digging through MSDN yielded nothing helpful.

Any suggestions, please?



Keith Trangmar
Harlend Computer Services
Maidstone, Kent. UK.

 

[theboyhope]

Have you looked into using try-catch?

var wsh = new ActiveXObject("WScript.Shell");

try {
    wsh.RegRead ( ... some reg key ... );
}

catch ( e ) {

    if ( e != 0 ) {

        WScript.Echo ("Error: " + e + " Entry doesn't exists");
        WScript.Quit(1);
    }
}

 

[BillyRayPreachersSon]

Keith,

This should work in JavaScript:

try
{
	// do stuff here
}
catch (err)
{
	// do error routine here
}

Hope this helps,

Dan

 

[KeithTrangmar]

Ah, splendid, thanks chaps, that'll do nicely.



Keith Trangmar
Harlend Computer Services
Maidstone, Kent. UK.