MACROMEDIA FLASH 8-ACTIONSCRIPT 2.0 LANGUAGE, Reference

Page: 705 / 1378

LoadVars 705
See also
onHTTPStatus (XML.onHTTPStatus handler)
,
load (LoadVars.load method)
,
sendAndLoad (LoadVars.sendAndLoad method)
onLoad (LoadVars.onLoad handler)
onLoad = function(success:Boolean) {}
Invoked when a
LoadVars.load()
or
LoadVars.sendAndLoad()
operation has ended. If the
operation was successful,
my_lv
is populated with variables downloaded by the operation, and
these variables are available when this handler is invoked.
This handler is undefined by default.
This event handler is similar to
XML.onLoad
.
Availability: ActionScript 1.0; Flash Player 6
Parameters
success :Boolean
- A Boolean value that indicates whether the load operation ended in
success (
true
) or failure (
false
).
Example
The following example adds a TextInput instance called
name_ti
, a TextArea instance called
result_ta
, and a Button instance called
submit_button
to the Stage. When the user clicks
the Login button instance, two LoadVars objects are created:
send_lv
and
result_lv
. The
send_lv
object copies the name from the
name_ti
instance and sends the data to
greeting.cfm. The result from this script loads into the
result_lv
object, and the server
response is displayed in the TextArea instance (
result_ta
). Add the following ActionScript
on Frame 1 of the Timeline:
var submitListener:Object = new Object();
submitListener.click = function(evt:Object) {
var result_lv:LoadVars = new LoadVars();
result_lv.onLoad = function(success:Boolean) {
if (success) {
result_ta.text = result_lv.welcomeMessage;
} else {
result_ta.text = "Error connecting to server.";
}
};
var send_lv:LoadVars = new LoadVars();
send_lv.name = name_ti.text;
send_lv.sendAndLoad("http://www.flash-mx.com/mm/greeting.cfm",
result_lv, "POST");
};
submit_button.addEventListener("click", submitListener);