Flash Applets Interface

Introduction

The communication between the applet and the JavaScript code in the WeBWork page uses the ActionScript class ExternalInterface. Using this class, the developer can define callbacks in the ActionScript code to be called by JavaScript, and also directly call JavaScript code from ActionScript.

In this page we do not discuss the details of the ExternalInterface class, but describe the methods that WeBWork expects to be made available by the applet. The details of how to implement these functions is show in the examples that follow.