YUI Library Examples: Animation: Animation Easing

Animation: Animation Easing

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 title="remove module" class="yui-toggle"><em>-</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 title="remove module" class="yui-toggle"><em>-</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 .yui-bd',
    to: { height: 0 },
    easing: Y.Easing.backIn
});

var anim = new Y.Anim({
    node: '#demo .yui-bd',
    to: { height: 0 },
    easing: Y.Easing.backIn
});

Running the Animation

Finally we add an event handler to run the animation.

var onClick = function(e) {
    e.preventDefault();
    anim.run();
};
Y.get('#demo .yui-toggle').on('click', onClick);

var onClick = function(e) {
    e.preventDefault();
    anim.run();
};
Y.get('#demo .yui-toggle').on('click', onClick);

Full Script Source

YUI().use('anim', function(Y) {
    var anim = new Y.Anim({
        node: '#demo .yui-bd',
        to: { height: 0 },
        easing: Y.Easing.backIn
    });
 
    var onClick = function(e) {
        e.preventDefault();
        anim.run();
    };
    Y.get('#demo .yui-toggle').on('click', onClick);
 
});

YUI().use('anim', function(Y) {
    var anim = new Y.Anim({
        node: '#demo .yui-bd',
        to: { height: 0 },
        easing: Y.Easing.backIn
    });
 
    var onClick = function(e) {
        e.preventDefault();
        anim.run();
    };
    Y.get('#demo .yui-toggle').on('click', onClick);
 
});