flash.external.ExternalInterface is the External API that enables the communication between actionscript and flash player container. It enables the communication between javascript and actionscript.
From ActionScript, you can do the following on the HTML page:
* Call any JavaScript function.
* Pass any number of arguments, with any names.
[...]
昨天在yahoo user interface blog 看到了一片文章 : Event Driven Web Application Design
在读到关于event delegation的时候,我被这个概念吸引注了,于是通过这个地址看到了一篇关于
event delegation vs event handling 的文章, 这篇文章将event delegation的概念讲的比较详细了,
不过还是在自己动手写的代码之后才真正明白了是怎么一回事,看看我写的这个非常简单的例子吧
<html>
<head>
<script src="prototype.js"></script>
<script>
function containerHandler(e){
alert("target:"+e.target.id+"—currentTarget:"+e.currentTarget.id+"—bubbles:"+e.bubbles) ;
}
</script>
</head>
<body>
<div id="container">
<ul id="list">
<li id="li-1">List Item 1</li>
<li id="li-2">List Item 2</li>
<li id="li-3">List Item 3</li>
<li id="li-4">List Item 4</li>
<li id="li-5">List Item 5</li>
<li id="li-6">List Item 6</li>
</ul>
</div>
</body>
<script>
Event.observe($(’container’),’click’,containerHandler,false);
</script>
</html>
Event对象有几个比较重要的属性,也就是我们alert出来的那几个,其中target表示触发事件的元素,currentTarget表示监听事件的元素,bubbles表示时间是否向外层传播. 乍看上去target和currentTarget非常容易混淆,不过让我们看看event bubble的概念可能就会更清楚一些.
…In essence this means that whenever you do something to an [...]