User Guide

Example: Using the External API with a web page container 513

■ The getStatus() ActionScript method returns a value, and that value is assigned to the

currentStatus variable, which is then assigned as the content (the value property) of

the

status text field.

The

sendMessage() JavaScript function demonstrates passing a parameter to an ActionScript

function. (

sendMessage() is the function that is called when the user presses the Send

button on the HTML page.)

...

function sendMessage(message)

{

if (swfReady)

{

...

getSWF("IntrovertIMApp").newMessage(message);

}

...

</script>

The newMessage() ActionScript method expects one parameter, so the JavaScript message

variable gets passed to ActionScript by using it as a parameter in the

newMessage() method

call in the JavaScript code.

NOTE

If you’re following along in the code, you’ve probably noticed that in the source code for

the

updateStatus() function, the line of code that calls the getSWF() function, is actually

written as follows:

var currentStatus = getSWF("${application}").getStatus();

The ${application} text is a placeholder in the HTML page template; when Adobe Flex

Builder 2 generates the actual HTML page for the application, this placeholder text is

replaced by the same text that is used as the

tag’s

name attribute (IntrovertIMApp in the example). That is the value that is expected by

the

getSWF() function.