app.onError
Description
The name of a callback function that is called when an error occurs. By creating a function and assigning it to this attribute, you can respond to errors systematically; for example, you can close and restart the application, noting the error in a log file if it occurred during rendering.
The callback function is passed the error string and a severity string. It should not return any value.
Type
A function name string, or null if no function is assigned; read/write.
Example
function err(errString) {
alert(errString);
}
app.onError = err;