Problem
What if you are creating an application that compile size matters and you want to use JSON strings to get data into your application. JSON stands for JavaScript object notation, it is a more condense data format then XML and is able to define different types of data not just Strings. You can use the Adobe Core Lib classes to parse this information but these classes add a little extra weight to your application and in some apps this isn't ok but there is another way.
Solution
Because JSON is just a subset of JavaScript objects ExternalInterface can just send these objects as Strings to JavaScript within your browser and the JavaScript interpreter will send an ActionScript Object back to you with the correct types. I have also noticed that this information is parsed faster and more reliably then the standard version but remember that this is only helps you with decoding. If you would like to create a JSON string from an Object you will have to use something else.
Detailed explanation
package
{
import flash.external.ExternalInterface;
public class JSONExample
{
public function JSONExample()
{
super();
}
public function decode( data:String ):void
{
return ExternalInterface.call("function(){return " +
data + "}");
}
}
}
+
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