MACROMEDIA FLASH 8-ACTIONSCRIPT 2.0 LANGUAGE, Справочник, Страница: 709 / 1378

LoadVars 709
Parameters
url :String
- A string; the URL to which to upload variables. If the SWF file issuing this call
is running in a web browser,
url
must be in the same domain as the SWF file.
target :Object
- The LoadVars or XML object that receives the downloaded variables.
method :String
[optional] - A string; the
GET
or
POST
method of the HTTP protocol. The
default value is
POST
.
Returns
Boolean
- A Boolean value.
Example
For the following example, add 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 in the following example, 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 displays in the TextArea instance (
result_ta
). Add the
following ActionScript to 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);
To view a more robust example, see the login.fla file in the ActionScript samples folder.
Typical paths to the ActionScript samples folder are:
■
Windows: boot drive \Program Files\Macromedia\Flash 8\Samples and
Tutorials\Samples\ActionScript
■
Macintosh: Macintosh HD /Applications/Macromedia Flash 8/Samples and Tutorials/
Samples/ActionScript