Calling Javascript functions from Flash

Calling Javascript functions from Flash is very easy. We use a class called ExternalInterface. Here is ActionScript code:

import flash.external.*;
import flash.events.Event;

button1.addEventListener(MouseEvent.CLICK, buttonHandle);

function buttonHandle(event:MouseEvent)
{
    ExternalInterface.call("showMessage");
}

Here flash.external is a package where the class ExternalInterface is found.
The code is very simple. Event listener to button is added. And call is a method of ExternalInterface class, the parameter passed to call() is a name of the Javascript function.

The Javascript function is an alert message:

function showMessage()
{
    alert("Hi from flash");
}