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VBScript
In VBSCript, the Err.Raise method will halt the execution of the script and trigger the On Error tab
unless you previously specified On Error Resume Next. See MSDN for the Raise method prop-
erties and this page for a list of available errors to raise. In the case of VBScript, the error number used
will determine the message shown in the log. You can also override the standard error message by
providing your own:
Dim s
s = Watch.GetJobInfo(9)
If (s = "") Then
Err.Raise 449 ' Raises Error #449: "Argument is not optional" ' Err.Raise
1999,"My Plugin","Custom error" ' Raises error #1999: "Custom error"
Else
' Do something with Job Info 9!
Watch.Log "Job Info 9's value is: " + s, 4
End If
JavaScript
JavaScript uses the throw statement to create an exception which, if not nested inside a catch() con-
struct, will cause the script execution to stop and the On Error tab to be triggered.
var s;
s = Watch.GetJobInfo(9);
if (!s) {
throw 449;
} else {
// Do something with Job Info 9!
Watch.Log("Job Info 9's value is: " + s,4);
}
See also: throw on developer.mozilla.org.
Python
In Python, the raise statement is similar to JavaScript and will stop processing and trigger the On
Error tab unless an except statement is used. See the python documentation.
s = Watch.GetJobInfo(9)
if not s:
raise NameError('Value cannot be empty')
else:
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