Wednesday, October 1, 2008

How to animate an element's position using the Motion subclass

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>

<head>

<title>Motion Example - Basic</title>

<style type="text/css">

/*

Copyright (c) 2006, Yahoo! Inc. All rights reserved.

Code licensed under the BSD License:

http://developer.yahoo.net/yui/license.txt

Version: 0.10.0

*/



body {

   
margin:0;

   
font:small arial;

}



h1 {

   
color:#666;

   
margin:0;

   
font:bold 150% palatino, georgia;

}



#hd img {

   
vertical-align:middle;

}



#hd h1 {

   
display:inline;

   
margin:0 0 0 20px;

   
vertical-align:middle;

}



ul, li {

   
margin:0;

   
padding:0;

   
list-style:none;

}



#doc {

   
margin:10px;

}



#examples {

   
margin:60px 40px;

}



#examples li {

   
margin-bottom:1em;

}



#examples li a {

   
color:#666;

   
font:85% verdana;

}



#demo {

   
background:#ccc;

   
font:100%/1.2em arial;

   
width:10px;

   
height:10px;

}



#animation-demo-scroll #demo p {

   
width:600px;

}



#animation-demo-motion #demo {

   
color:yellow;

   
font-size:0;

}



#animation-demo-size-plus #demo, #animation-demo-fade #demo, #animation-demo-colors #demo {

   
background:#ccc;

   
font:100%/1.2em arial;

   
width:200px;

   
height:200px;

}

#animation-demo-colors #demo {

   
border:3px solid #c3c;

}



#animation-demo-scroll #demo {

   
width:400px;

   
height:200px;

   
overflow:auto;

}



#animation-demo-colors #demo {



}



#target {

   
background:red;

   
font-size:0;

   
position:absolute;

   
left:300px;top:300px;

   
width:10px;

   
height:10px;

}



</style>



<script type="text/javascript" src="./build/yahoo/yahoo.js"></script>

<script type="text/javascript" src="./build/event/event.js"></script>

<script type="text/javascript" src="./build/dom/dom.js"></script>

<script type="text/javascript" src="./build/animation/animation.js"></script>



<script type="text/javascript">

YAHOO.example.init = function() {   

   
var anim = new YAHOO.util.Motion('demo', { points: { to: YAHOO.util.Dom.getXY('target') } });

   
YAHOO.util.Event.on(document, 'click', anim.animate, anim, true);

};



YAHOO.util.Event.onAvailable('demo', YAHOO.example.init);

</script>



</head>

<body id="animation-demo-motion">

<div id="doc">

   
<h1>Motion Example - Basic</h1>

   
<p>This example demonstrates how to animate an element's position using the Motion subclass.</p>

   
<p>Click anywhere to start animation.</p>

   
<div id="demo"></div>  

   
<div id="target"></div>

</div>

</body>

</html>






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