Manipulate REST output before JSON parsing

[Renjith V]

I got why the try/catch is not effective. Try is only for invoking the service. The response happens elsewhere in a different thread context.

[maxkatz]

Delete and then re-create the service. Run it without any custom code, then add your code.

[Renjith V]

Ok, let it fail. What eventually happens is that the animation that comes in front of the screen (with the rotating icon) never goes. Is there a way to at least get rid of that?

[Renjith V]

You mean only in the data page or even the Service itself from the application?

[maxkatz]

Service instance and the service.

[Renjith V]

Ok, I didn't have succes with anything, now I am calling hideSpinner(); so that the screen is not blocked. A temporary relief.

[Emmz]

Because you can never really trust server response. I always use try/catch before sending response to JSON.parse.
The error your showing is due to failed parse of what was sent to it.

[Emmz]

See whats really comming back first by using the browsers debugging . Maybe add this.
codevar responseTxt =(jqXHR.responseText);/code
This will show content. Arrays within Object etc.

[Renjith V]

Btw, I still have not figured out a clean way for this. I tried all the suggestions. I am sure this happens if we create a sample JSON that returns an invalid response. None of the callbacks are called. Possible for anyone to try? I am still on the free plan and hence can create only one project.
Still living with the hideSpinner so that the UI is not blocked. But that is not a clean solution as the loading is actually not complete when I hide it.

[maxkatz]

Use Chrome Dev. Tools to see if the service is invoked and what it returns.