QJSEngine and error line

[fober]

Hi,

I'm using the new QJSEngine and I'm trying to get the error line number (in case of error of course).
Currently I'm handling errors as documented:

• if (result.isError()) result.toString().toUtf8() ...

but actually, the string is very poor: e.g. "SyntaxError: Syntax error"
I would like to get at least a line number. Contextual information would be also welcome.
Is it possible with the QJSEngine? (I'm using Qt 5.3.0)

Dominique

[JKSH]

Hi Dominique,

It looks to me like a missing feature in QJSEngine. The documentation mentions line numbers, but the API doesn't seem to provide a way to retrieve it.

I might have missed something though. I suggest taking this to the Interest mailing list -- subscribe to the list and post your question there. Qt engineers are active on this list, and they will be able to tell you if there's currently a way to do what you want. (If not, you can submit a feature request)

[fober]

Thanks for the pointer to the list.
I've got the answer:
Try to access the properties "message", "fileName" and "lineNumber".
if (result.isError())
qDebug() << result.property("fileName").toString();
result is a JavaScript Error object iff isError returns true.

[JKSH]

@fober
Great! Thanks for sharing the answer.