User Guide

398 Chapter 2:
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 HelpExamples folder. Typical paths to
the HelpExamples folder are:
• Windows: \Program Files\Macromedia\Flash MX 2004\Samples\HelpExamples\
• Macintosh: HD/Applications/Macromedia Flash MX 2004/Samples/HelpExamples/
•
LoadVars.send(), XML.sendAndLoad()