Build jQuery UI Effects - Easing demo in JavaScript

Description

The following code shows how to build jQuery UI Effects - Easing demo.

Example


<!-- Revised from demo code on http://jqueryui.com/ -->
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Effects - Easing demo</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/jquery-ui.min.js"></script>
<link type="text/css" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.10.4/themes/smoothness/jquery-ui.css" rel="stylesheet" />
<!--from w  w  w .  ja  va2  s .  c om-->
<style>
.graph {
float: left;
margin-left: 10px;
}
</style>
<script>
$(function() {
if ( !$( "<canvas>" )[0].getContext ) {
$( "<div>" ).text(
"Your browser doesn't support canvas, which is required for this demo."
).appendTo( "#graphs" );
return;
}

var i = 0,
width = 100,
height = 100;

$.each( $.easing, function( name, impl ) {
var graph = $( "<div>" ).addClass( "graph" ).appendTo( "#graphs" ),
text = $( "<div>" ).text( ++i + ". " + name ).appendTo( graph ),
wrap = $( "<div>" ).appendTo( graph ).css( 'overflow', 'hidden' ),
canvas = $( "<canvas>" ).appendTo( wrap )[ 0 ];

canvas.width = width;
canvas.height = height;
var drawHeight = height * 0.8,
cradius = 10;
ctx = canvas.getContext( "2d" );
ctx.fillStyle = "black";

// draw background
ctx.beginPath();
ctx.moveTo( cradius, 0 );
ctx.quadraticCurveTo( 0, 0, 0, cradius );
ctx.lineTo( 0, height - cradius );
ctx.quadraticCurveTo( 0, height, cradius, height );
ctx.lineTo( width - cradius, height );
ctx.quadraticCurveTo( width, height, width, height - cradius );
ctx.lineTo( width, 0 );
ctx.lineTo( cradius, 0 );
ctx.fill();

// draw bottom line
ctx.strokeStyle = "#555";
ctx.beginPath();
ctx.moveTo( width * 0.1, drawHeight + .5 );
ctx.lineTo( width * 0.9, drawHeight + .5 );
ctx.stroke();

// draw top line
ctx.strokeStyle = "#555";
ctx.beginPath();
ctx.moveTo( width * 0.1, drawHeight * .3 - .5 );
ctx.lineTo( width * 0.9, drawHeight * .3 - .5 );
ctx.stroke();

// plot easing
ctx.strokeStyle = "white";
ctx.beginPath();
ctx.lineWidth = 2;
ctx.moveTo( width * 0.1, drawHeight );
$.each( new Array( width ), function( position ) {
var state = position / width,
val = impl( state, position, 0, 1, width );
ctx.lineTo( position * 0.8 + width * 0.1,
drawHeight - drawHeight * val * 0.7 );
});
ctx.stroke();

// animate on click
graph.click(function() {
wrap
.animate( { height: "hide" }, 2000, name )
.delay( 800 )
.animate( { height: "show" }, 2000, name );
});

graph.width( width ).height( height + text.height() + 10 );
});
});
</script>
</head>
<body>

<div id="graphs"></div>

<div class="demo-description">
<p><strong>All easings provided by jQuery UI are drawn above, using a HTML canvas element</strong>. Click a diagram to see the easing in action.</p>
</div>
</body>
</html>

Click to view the demo

The code above generates the following result.

Build jQuery UI Effects - Easing demo in JavaScript

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