Easing


Apply an easing equation to an animation.

All easings provided by jQuery UI are drawn above, using a HTML canvas element. Click a diagram to see the easing in action.

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Effects - Easing demo</title>
<link rel="stylesheet" href="//code.jquery.com/ui/1.11.1/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
<script src="//code.jquery.com/ui/1.11.1/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css">
<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>
</body>
</html>

Want to learn more about easings? Check out the API documentation.