注意，留意这个按钮是如何设置由test类声明的testInstance object的属性的.通常会犯一个错误，即在写LZX方法是在其方法名后加大括号，这是没有必要的。
运行此实例，按下按钮将会显示出如图3所示
图3 事件激活实例
使用脚本代替方法
＜canvas width="800" debug="true"＞
＜debug x="450" y="0" height="300"/＞
＜!-- The previous respond method --＞
＜method name="respondToButton" ＞
//Prepare a string
var somestring =
"Hey, I am setting the a1 attributes value";
//Write a debug to see it
Debug.write(somestring);
//Call the alert to see it
showAlert(somestring);
//Go ahead and set the attribute
canvas.testInstance.setAttribute("a1",'satya');
//The above will fire an event causing
//"ona1Method" to execute.
//You will see this in the debugger
＜/method＞
＜!-- Your method rewritten as a script --＞
＜script＞
function respondToButtonUsingScript()
{
var somestring =
"Hey, I am setting the a1 attributes value";
Debug.write(somestring);
showAlert(somestring);
canvas.testInstance.setAttribute("a1",'satya');
}
＜/script＞
＜!-- Button now calling the global script function --＞
＜button onclick="respondToButtonUsingScript()"＞
Show Alert
＜/button＞
＜class name="test"＞
＜attribute name="a1" type="string"/＞
＜attribute name="b1"/＞
＜/class＞
＜!--Instantiating a class--＞
＜test name="testInstance"＞
＜!--Demonstrating an onchange for attribute event--＞
＜method event="ona1" name="ona1Method"＞
Debug.write("hey this works");
＜/method＞
＜/test＞
＜!-- Simulating an alert --＞
＜!-- A modal alert dialog --＞
＜alert name="myalert" width="100" y="100"＞
hi - initial text
＜/alert＞
＜!-- A method to work the modal dialog --＞
＜method name="showAlert" args="displayText"＞
canvas.myalert.setAttribute("text",displayText);
canvas.myalert.open();
＜/method＞
＜/canvas＞
