Flash：在AS3中使用FlashVars

在AS2中因为程序不检查变量是否以定义，所以在AS2中使用FlashVars是非常轻松的一件事。

AS2：

if(test!=undefined)
{
	trace(test);
}

HTML:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>FlashVars Test</title>

<script type="text/javascript" src="swfobject.js"></script>

</head>
<body>
	<div id="flashcontent">
		
	</div>


	<script type="text/javascript">
		// <![CDATA[
		
		var so = new SWFObject("flashvarstest.swf", "sotester", "550", "400", "9", "#ffff33");
		so.addVariable("testvar", "Hello World!"); 
		so.write("flashcontent");
		
		// ]]>
	</script>
</body>
</html>

在AS2这样的代码是完全没有问题,但到了AS3中这种方法将会显示变量未定义的错误.在AS3中仍旧存在一种解决方案来实现这种功能.

AS3:

var varName:String;
var paramObj:Object = LoaderInfo(this.root.loaderInfo).parameters;
trace(paramObj.test);

HTML:

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>FlashVars Test</title>

<script type="text/javascript" src="swfobject.js"></script>

</head>
<body>
	<div id="flashcontent">
		
	</div>


	<script type="text/javascript">
		// <![CDATA[
		
		var so = new SWFObject("flashvarstest.swf", "sotester", "550", "400", "9", "#ffff33");
		so.addVariable("testvar", "Hello World!"); 
		so.write("flashcontent");
		
		// ]]>
	</script>
</body>
</html>
posted @ 2009-03-01 14:33  昕扬  阅读(1391)  评论(0)  编辑  收藏  举报