Setting up the HTML

First we add some HTML to animate.

<div id="demo" class="yui3-module">
    <div class="yui3-hd">
        <h3>The End Event</h3>
        <a title="fade then remove element" class="yui3-remove"><em>x</em></a>
    </div>
    <div class="yui3-bd">
        <p>Click the X in the header to fade out the element and remove it from 
        the document once the fade completes.</p>
    </div>
</div>
<p>This is placeholder text used to demonstrate how the above animation affects subsequent content.</p>

Creating the Anim Instance

Now we create an instance of Y.Anim, passing it a configuration object that includes the node we wish to animate and the to attribute containing the properties to be transitioned and final values.

var anim = new Y.Anim({
    node: '#demo',
    to: { opacity: 0 }
});

Handling the End Event

We will need a function to run when the end event fires. Note that the context of our handler defaults to anim, so this refers to our Anim instance inside the handler.

var onEnd = function() {
    var node = this.get('node'); // this === anim
    node.get('parentNode').removeChild(node); // node is an instance of Node
};

Listening for the End Event

Now we will use the on method to subscribe to the end event, passing it our handler.

anim.on('end', onEnd);

Running the Animation

Finally we add an event handler to run the animation.

Y.one('#demo .yui3-remove').on('click', anim.run, anim);

Complete Example Source

<div id="demo" class="yui3-module">
    <div class="yui3-hd">
        <h3>The End Event</h3>
        <a title="fade then remove element" class="yui3-remove"><em>x</em></a>
    </div>
    <div class="yui3-bd">
        <p>Click the X in the header to fade out the element and remove it from 
        the document once the fade completes.</p>
    </div>
</div>
<p>This is placeholder text used to demonstrate how the above animation affects subsequent content.</p> 
 

<script type="text/javascript">
YUI().use('anim', function(Y) {
    var anim = new Y.Anim({
        node: '#demo',
        to: { opacity: 0 }
    });

    var onEnd = function() {
        var node = this.get('node');
        node.get('parentNode').removeChild(node);
    };

    anim.on('end', onEnd);

    Y.one('#demo .yui3-remove').on('click', anim.run, anim);

});
</script>