[API categories](API-categories.md) | [API index](API-index.md) # JavascriptCallback (object) 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). See also [JavascriptBindings](JavascriptBindings.md). See also [Issue #11](../issues/11) (Throw JS / Python exceptions according to execution context). Table of contents: * [Methods](#methods) * [Call](#call) * [GetName](#getname) ## Methods ### Call | Parameter | Type | | --- | --- | | [params..] | mixed | | __Return__ | mixed | Call the javascript callback function. For a list of allowed types for `mixed` see [JavascriptBindings](JavascriptBindings.md).IsValueAllowed(). ### GetName | | | | --- | --- | | __Return__ | string | Get the javascript function's name. If that is an anonymous function you will get some random name like "É☺«".