YUI Library Examples: Animation: Basic Animation

Animation: Basic Animation

Setting up the HTML

First we add some HTML to animate.

<div id="demo" class="yui-module">
    <div class="yui-hd">
        <h4>Animation Demo</h4>
        <a href="remove.php?id=demo" title="remove module" class="yui-remove"><em>x</em></a>
    </div>
    <div class="yui-bd">
        <p>This an example of what you can do with the YUI Animation Utility.</p>
        <p><em>Follow the instructions above to see the animation in action.</em></p>
    </div>
</div>

<div id="demo" class="yui-module">
    <div class="yui-hd">
        <h4>Animation Demo</h4>
        <a href="remove.php?id=demo" title="remove module" class="yui-remove"><em>x</em></a>
    </div>
    <div class="yui-bd">
        <p>This an example of what you can do with the YUI Animation Utility.</p>
        <p><em>Follow the instructions above to see the animation in action.</em></p>
    </div>
</div>

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 final properties and their values.

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

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

Handling the Click Event

Clicking the toggle control should start the animation, so we'll need to handle that click, including preventing the default action of following the url.

var onClick = function(e) {
    e.preventDefault();
    anim.run();
};

var onClick = function(e) {
    e.preventDefault();
    anim.run();
};

Running the Animation

Finally we add an event listener to run the animation.

Y.get('#demo .yui-remove').on('click', onClick);

Y.get('#demo .yui-remove').on('click', onClick);

Full Script Source

YUI().use('anim-base', function(Y) {
    var anim = new Y.Anim({
        node: '#demo',
        to: { opacity: 0 }
    });
 
    var onClick = function(e) {
        e.preventDefault();
        anim.run();
    };
 
    Y.get('#demo .yui-remove').on('click', onClick);
});

YUI().use('anim-base', function(Y) {
    var anim = new Y.Anim({
        node: '#demo',
        to: { opacity: 0 }
    });
 
    var onClick = function(e) {
        e.preventDefault();
        anim.run();
    };
 
    Y.get('#demo .yui-remove').on('click', onClick);
});