You can pass a callback function from Javascript to Python, when you do that, what you get in Python is a JavascriptCallback object that you can use to call javascript function back.

If you call the javascript callback and it fails, instead of js exception what you get is a python exception that exits the application by default (see sys.excepthook in examples), if you want to know more read about Javascript Errors.

See also JavascriptBindings.

See also Issue 11 (Throw JS / Python exceptions according to execution context).

mixed Call([mixed param [, mixed param [, ..]]])

Call the javascript callback function.

For a list of allowed types for mixed see JavascriptBindings.IsValueAllowed().

string GetName()

Get the javascript function's name. If that is an anonymous function you will get some random name like "É☺«".