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<!DOCTYPE html> |
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<html lang="en"> |
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<head> |
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<meta charset="utf-8"> |
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<title>Example: Alternating Iterations</title> |
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<link rel="stylesheet" href="http://fonts.googleapis.com/css?family=PT+Sans:400,700,400italic,700italic"> |
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<link rel="stylesheet" href="../../build/cssgrids/cssgrids-min.css"> |
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<link rel="stylesheet" href="../assets/css/main.css"> |
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<link rel="stylesheet" href="../assets/vendor/prettify/prettify-min.css"> |
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<link rel="shortcut icon" type="image/png" href="../assets/favicon.png"> |
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<script src="../../build/yui/yui-min.js"></script> |
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</head> |
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<body> |
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<!-- |
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<a href="https://github.com/yui/yui3"><img style="position: absolute; top: 0; right: 0; border: 0;" src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png" alt="Fork me on GitHub"></a> |
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--> |
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<div id="doc"> |
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<div id="hd"> |
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<h1><img src="http://yuilibrary.com/img/yui-logo.png"></h1> |
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</div> |
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<h1>Example: Alternating Iterations</h1> |
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<div class="yui3-g"> |
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<div class="yui3-u-3-4"> |
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<div id="main"> |
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<div class="content"><link href="../assets/anim/anim.css" rel="stylesheet" type="text/css"> |
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<div class="intro"> |
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<p>This demonstrates how to use the <code>iterations</code> attribute to run multiple iterations of the animation.</p> |
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<p>Mouse over the link to begin the animation.</p> |
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</div> |
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<div class="example"> |
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<a href="#" id="demo">hover me</a> |
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<script type="text/javascript"> |
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YUI().use('anim', function(Y) { |
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var node = Y.one('#demo'); |
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var anim = new Y.Anim({ |
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node: node, |
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from: { |
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backgroundColor:node.getStyle('backgroundColor'), |
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color: node.getStyle('color'), |
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borderColor: node.getStyle('borderTopColor') |
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}, |
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to: { |
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color: '#fff', |
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backgroundColor:'#FF8800', |
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borderColor: '#BA6200' |
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}, |
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duration: 0.5, |
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iterations: 'infinite', |
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direction: 'alternate' |
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}); |
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var hover = function(e) { |
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var reverse = false, |
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iterations = 'infinite'; |
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if (anim.get('running')) { |
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anim.stop(); |
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} |
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if (e.type === 'mouseout') { |
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reverse = true; |
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iterations = 1; |
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} |
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anim.setAttrs({ |
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'reverse': reverse, |
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'iterations': iterations |
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}); |
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anim.run(); |
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}; |
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node.on('mouseover', hover); |
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node.on('mouseout', hover); |
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}); |
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</script> |
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</div> |
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<h2>Setting up the HTML</h2> |
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<p>First we add some HTML to animate.</p> |
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<pre class="code prettyprint"><a href="#" id="demo">hover me</a></pre> |
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<h2>Creating the Anim Instance</h2> |
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<p>Now we create an instance of <code>Y.Anim</code>, passing it a configuration object that includes the <code>node</code> we wish to animate and the <code>to</code> attribute containing the final properties and their values.</p> |
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<p>Adding an <code>iterations</code> attribute of "infinite" means that the animation will run continuously.</p> |
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<p>The <code>direction</code> attribute of "alternate" means that the animation reverses every other iteration.</p> |
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<pre class="code prettyprint">var node = Y.one('#demo'); |
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var anim = new Y.Anim({ |
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node: node, |
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from: { |
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backgroundColor:node.getStyle('backgroundColor'), |
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color: node.getStyle('color'), |
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borderColor: node.getStyle('borderTopColor') |
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}, |
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to: { |
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color: '#fff', |
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backgroundColor:'#FF8800', |
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borderColor: '#BA6200' |
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}, |
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duration: 0.5, |
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iterations: 'infinite', |
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direction: 'alternate' |
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});</pre> |
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<h2>Changing Attributes</h2> |
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<p>We don't want the animation running when the link is not hovered over, so we will change the animation attributes depending on whether or not we are over the link.</p> |
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<p>We can use a single handler for both mouse the mouseOver and mouseOut events, and set the <code>reverse</code> attribute depending on which event fired.</p> |
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<pre class="code prettyprint">var hover = function(e) { |
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var reverse = false, |
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iterations = 'infinite'; |
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if (anim.get('running')) { |
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anim.pause(); |
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} |
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if (e.type === 'mouseout') { |
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reverse = true; |
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iterations = 1; |
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} |
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anim.setAttrs({ |
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'reverse': reverse, |
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'iterations': iterations |
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}); |
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anim.run(); |
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};</pre> |
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<h2>Running the Animation</h2> |
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<p>Finally we add event handlers to run the animation.</p> |
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<pre class="code prettyprint">node.on('mouseover', hover); |
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node.on('mouseout', hover);</pre> |
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<h2>Complete Example Source</h2> |
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<pre class="code prettyprint"><a href="#" id="demo">hover me</a> |
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<script type="text/javascript"> |
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YUI().use('anim', function(Y) { |
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var node = Y.one('#demo'); |
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var anim = new Y.Anim({ |
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node: node, |
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from: { |
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backgroundColor:node.getStyle('backgroundColor'), |
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color: node.getStyle('color'), |
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borderColor: node.getStyle('borderTopColor') |
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}, |
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to: { |
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color: '#fff', |
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backgroundColor:'#FF8800', |
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borderColor: '#BA6200' |
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}, |
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duration: 0.5, |
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iterations: 'infinite', |
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direction: 'alternate' |
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}); |
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var hover = function(e) { |
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var reverse = false, |
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iterations = 'infinite'; |
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if (anim.get('running')) { |
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anim.stop(); |
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} |
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if (e.type === 'mouseout') { |
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reverse = true; |
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iterations = 1; |
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} |
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anim.setAttrs({ |
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'reverse': reverse, |
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'iterations': iterations |
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}); |
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anim.run(); |
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}; |
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node.on('mouseover', hover); |
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node.on('mouseout', hover); |
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}); |
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</script></pre> |
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</div> |
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</div> |
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</div> |
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<div class="yui3-u-1-4"> |
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<div class="sidebar"> |
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<div class="sidebox"> |
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<div class="hd"> |
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<h2 class="no-toc">Examples</h2> |
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</div> |
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<div class="bd"> |
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<ul class="examples"> |
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<li data-description="Creating and using a simple animation."> |
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<a href="basic.html">Basic Animation</a> |
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</li> |
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<li data-description="The Animation Utility allows you to implement 'easing effects' — for example, when an animation gradually slows down as it nears completion, that's an easing effect known as 'ease-in'. This example shows you how to use easing effects with your animations."> |
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<a href="easing.html">Easing Effects</a> |
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</li> |
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<li data-description="Color animations can be effective indicators of state during the lifespan of a dynamic page. This example shows you how to animate color attributes of an element."> |
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<a href="colors.html">Animating Colors</a> |
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</li> |
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<li data-description="The direction attribute can be used to reverse the animation on alternate iterations."> |
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<a href="alt-iterations.html">Alternating Iterations</a> |
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</li> |
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<li data-description="This example shows you how to animate the xy coordinates of an element."> |
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<a href="anim-xy.html">Animating XY Position</a> |
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</li> |
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<li data-description="This example demonstrates animating an element along a curved path using bezier control points."> |
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<a href="curve.html">Animating Along a Curved Path</a> |
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</li> |
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<li data-description="The reverse attribute allows you to change the run direction of an animation."> |
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<a href="reverse.html">Reversing an Animation</a> |
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</li> |
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<li data-description="This example demonstrates how to use the end event."> |
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<a href="end-event.html">Using the End Event</a> |
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</li> |
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</ul> |
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</div> |
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</div> |
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<div class="sidebox"> |
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<div class="hd"> |
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<h2 class="no-toc">Examples That Use This Component</h2> |
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</div> |
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<div class="bd"> |
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<ul class="examples"> |
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<li data-description="Working with multiple YUI instances."> |
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<a href="../yui/yui-multi.html">Multiple Instances</a> |
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</li> |
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<li data-description="Shows how to create a simple plugin to animate the Overlay's movement and visibility."> |
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<a href="../overlay/overlay-anim-plugin.html">Animation Plugin</a> |
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</li> |
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<li data-description="How to make an animated node a Drop target."> |
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<a href="../dd/anim-drop.html">Animated Drop Targets</a> |
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</li> |
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</ul> |
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</div> |
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</div> |
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</div> |
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</div> |
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</div> |
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</div> |
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<script src="../assets/vendor/prettify/prettify-min.js"></script> |
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<script>prettyPrint();</script> |
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<script> |
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YUI.Env.Tests = { |
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examples: [], |
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project: '../assets', |
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assets: '../assets/anim', |
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name: 'alt-iterations', |
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title: 'Alternating Iterations', |
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newWindow: '', |
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auto: false |
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}; |
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YUI.Env.Tests.examples.push('basic'); |
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YUI.Env.Tests.examples.push('easing'); |
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YUI.Env.Tests.examples.push('colors'); |
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YUI.Env.Tests.examples.push('alt-iterations'); |
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YUI.Env.Tests.examples.push('anim-xy'); |
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YUI.Env.Tests.examples.push('curve'); |
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YUI.Env.Tests.examples.push('reverse'); |
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YUI.Env.Tests.examples.push('end-event'); |
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YUI.Env.Tests.examples.push('yui-multi'); |
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YUI.Env.Tests.examples.push('overlay-anim-plugin'); |
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YUI.Env.Tests.examples.push('anim-drop'); |
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</script> |
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<script src="../assets/yui/test-runner.js"></script> |
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</body> |
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</html> |