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copied!<p>Arrays are not bindable in AS 3; they don't dispatch/trigger data binding events themselves.</p> <p>If you are working with Flex, you can wrap your array in an <code>ArrayCollection</code> which <em>is</em> bindable, and manipulate the <code>ArrayCollection</code> instead of the <code>Array</code>, everything should automatically work as you hope.</p> <p>So, in practice:</p> <pre><code>var myAC:ArrayCollection = new ArrayCollection(myArray); var myDP = new DataProvider(myAC); myAC[0] = 'changing the array!'; // will be reflected in the dataProvider </code></pre> <p>Better yet, if you're passing that <code>DataProvider</code> instance to a Flex component, you can usually (almost always) just pass the <code>ArrayCollection</code> instead. But, you haven't shown enough context for me to be sure on this.</p> <p>Here's a few useful links:</p> <ul> <li><a href="http://livedocs.adobe.com/flex/3/html/help.html?content=databinding_4.html" rel="nofollow noreferrer">Binding to functions, Objects, and Array</a>s</li> <li><a href="http://livedocs.adobe.com/flex/3/langref/mx/collections/ArrayCollection.html" rel="nofollow noreferrer">ArrayCollection</a></li> </ul> <p><strong>Edit:</strong> My fault, I did indeed assume you were using Flex for the above. </p> <p>In plain old AS3, the principal is the same. The <code>Array</code> does not dispatch events, but the <a href="http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/" rel="nofollow noreferrer"><code>DataProvider</code></a> does. If you can make your changes <em>to the dataProvider itself</em> then you're good to go.</p> <p>The AS3 <code>DataProvider</code> class offers a bunch of methods for data manipulation, like <code>addItem</code>, <code>removeItem</code>, <code>replaceItem</code>, <code>replaceItemAt</code>, just for example.</p> <p>So, it basically comes down to what kind of changes you need to make to the source array. More often than not, you'll be able to do them via the <code>DataProvider</code>.</p>

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