ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Using native JSON functionality
}
}
}
}
contents[a.id] = this[a];
// We also wrap the contents in an object so that we can
// identify it by looking for the marking property "class E"
// while in the midst of JSON.parse.
return {"class JSONDictionaryExtnExample": contents};
// This is just here for debugging and for illustration
public function toString():String {
var retval = "[JSONDictionaryExtnExample ]"
return retval;
}
When the following runtime script calls JSON.parse() on a JSONDictionaryExtnExample object, the reviver
function calls JSONGenericDictExample.revive() on each object in JSONDictionaryExtnExample. This call
extracts the ID that represents the object key. The JSONGenericDictExample.revive()function uses this ID to
retrieve and return the stored JSONDictionaryExtnExample object from a private static array.
import flash.display.MovieClip;
import flash.text.TextField;
var a_bob1:JSONGenericDictExample = new JSONGenericDictExample("Bob", new
Date(Date.parse("01/02/1934")));
var a_bob2:JSONGenericDictExample = new JSONGenericDictExample("Bob", new
Date(Date.parse("05/06/1978")));
var a_jen:JSONGenericDictExample = new JSONGenericDictExample("Jen", new
Date(Date.parse("09/09/1999")));
var e = new JSONDictionaryExtnExample();
e[a_bob1] = {earnings: 40, violations: 2};
e[a_bob2] = {earnings: 10, violations: 1};
e[a_jen] = {earnings: 25, violations: 3};
trace("JSON.stringify(e): " + JSON.stringify(e)); // {"class JSONDictionaryExtnExample":
//{"id_class_JSONGenericDictExample_10001":
//{"earnings":10,"violations":1},
//"id_class_JSONGenericDictExample_10002":
//{"earnings":25,"violations":3},
//"id_class_JSONGenericDictExample_10000":
// {"earnings":40,"violations":2}}}
var e_result = JSON.stringify(e);
Last updated 6/6/2012
122