Difference between #3 and #2 of Update content in AJAX with renderPartial

The most easy way to update content in AJAX is to use the partialRender method.

For this exemple I have three files: a controller (HelloWorldController.php) and
two views (index.php and _ajaxContent.php)

<br />
#### controllers/HelloWorldController.php
~~~
[php]
class HelloWorldController extends CController
{
	public function actionIndex()
	{
		$data = array();
		$data["myValue"] = "Content loaded";
		
		$this->render('index', $data);
	}
	
	public function actionUpdateAjax()
	{
		$data = array();
		$data["myValue"] = "Content updated in AJAX";
		
		$this->renderPartial('_ajaxContent', $data, false, true);
	}
}
~~~

The actionIndex set myValue to "Content loaded" and this variable is
passed to the view "index.php" and to "_ajaxContent.php"

<br />

#### views/helloWorld/index.php
~~~
[php]
<div id="data">
   <?php $this->renderPartial('_ajaxContent',
array('myValue'=>$myValue)); ?>
</div>

<?php echo CHtml::ajaxButton ("Update data",
                             
CController::createUrl('hello/UpdateAjax'),CController::createUrl('helloWorld/UpdateAjax'),

                              array('update' => '#data'));
?>
~~~

The ajaxButton call "actionUpdateAjax" and the returned data are
inserted in the div "data"

<br />

#### views/helloWorld/_ajaxContent.php
~~~
[php]
<?php echo $myValue ?>
~~~

Display $myValue

<br />

Now, run index.php?r=helloWorld

Enjoy!