CSS3 Transitions with custom easing functions
Native
These are the natively supported easing functions, built into WebKit.
- linear
- ease
- ease-in
- ease-out
- ease-in-out
Custom
These are custom easing functions (thanks to Robert Penner & Thomas Fuchs) that can produce much more interesting transitions.
Generated Animation CSS
Internally the custom easing function for the transition is faked using CSS animations. Here is the code that is produced on the fly for the most recent "transition".
================================================
FILE: js/modernizr.js
================================================
/*!
* Modernizr v2.0
* http://www.modernizr.com
*
* Copyright (c) 2009-2011 Faruk Ates, Paul Irish, Alex Sexton
* Dual-licensed under the BSD or MIT licenses: www.modernizr.com/license/
*/
/*
* Modernizr tests which native CSS3 and HTML5 features are available in
* the current UA and makes the results available to you in two ways:
* as properties on a global Modernizr object, and as classes on the
* element. This information allows you to progressively enhance
* your pages with a granular level of control over the experience.
*
* Modernizr has an optional (not included) conditional resource loader
* called Modernizr.load(), based on Yepnope.js (yepnopejs.com).
* To get a build that includes Modernizr.load(), as well as choosing
* which tests to include, go to www.modernizr.com/download/
*
* @author Faruk Ates
* @author Paul Irish
* @author Alex Sexton
* @copyright (c) 2009-2011
* @contributor Ben Alman
*/
window.Modernizr = (function( window, document, undefined ) {
var version = '2.0',
Modernizr = {},
// option for enabling the HTML classes to be added
enableClasses = true,
docElement = document.documentElement,
docHead = document.head || document.getElementsByTagName('head')[0],
/**
* Create our "modernizr" element that we do most feature tests on.
*/
mod = 'modernizr',
modElem = document.createElement(mod),
mStyle = modElem.style,
/**
* Create the input element for various Web Forms feature tests.
*/
inputElem = document.createElement('input'),
smile = ':)',
toString = Object.prototype.toString,
// List of property values to set for css tests. See ticket #21
prefixes = ' -webkit- -moz- -o- -ms- -khtml- '.split(' '),
// Following spec is to expose vendor-specific style properties as:
// elem.style.WebkitBorderRadius
// and the following would be incorrect:
// elem.style.webkitBorderRadius
// Webkit ghosts their properties in lowercase but Opera & Moz do not.
// Microsoft foregoes prefixes entirely <= IE8, but appears to
// use a lowercase `ms` instead of the correct `Ms` in IE9
// More here: http://github.com/Modernizr/Modernizr/issues/issue/21
domPrefixes = 'Webkit Moz O ms Khtml'.split(' '),
ns = {'svg': 'http://www.w3.org/2000/svg'},
tests = {},
inputs = {},
attrs = {},
classes = [],
featureName, // used in testing loop
// Inject element with style element and some CSS rules
injectElementWithStyles = function( rule, callback, nodes, testnames ) {
var style, ret, node,
div = document.createElement('div');
if ( parseInt(nodes, 10) ) {
// In order not to give false positives we create a node for each test
// This also allows the method to scale for unspecified uses
while ( nodes-- ) {
node = document.createElement('div');
node.id = testnames ? testnames[nodes] : mod + (nodes + 1);
div.appendChild(node);
}
}
// '].join('');
div.id = mod;
div.innerHTML += style;
docElement.appendChild(div);
ret = callback(div, rule);
div.parentNode.removeChild(div);
return !!ret;
},
// adapted from matchMedia polyfill
// by Scott Jehl and Paul Irish
// gist.github.com/786768
testMediaQuery = function( mq ) {
if ( window.matchMedia ) {
return matchMedia(mq).matches;
}
var bool;
injectElementWithStyles('@media ' + mq + ' { #' + mod + ' { position: absolute; } }', function( node ) {
bool = (window.getComputedStyle ?
getComputedStyle(node, null) :
node.currentStyle)['position'] == 'absolute';
});
return bool;
},
/**
* isEventSupported determines if a given element supports the given event
* function from http://yura.thinkweb2.com/isEventSupported/
*/
isEventSupported = (function() {
var TAGNAMES = {
'select': 'input', 'change': 'input',
'submit': 'form', 'reset': 'form',
'error': 'img', 'load': 'img', 'abort': 'img'
};
function isEventSupported( eventName, element ) {
element = element || document.createElement(TAGNAMES[eventName] || 'div');
eventName = 'on' + eventName;
// When using `setAttribute`, IE skips "unload", WebKit skips "unload" and "resize", whereas `in` "catches" those
var isSupported = eventName in element;
if ( !isSupported ) {
// If it has no `setAttribute` (i.e. doesn't implement Node interface), try generic element
if ( !element.setAttribute ) {
element = document.createElement('div');
}
if ( element.setAttribute && element.removeAttribute ) {
element.setAttribute(eventName, '');
isSupported = is(element[eventName], 'function');
// If property was created, "remove it" (by setting value to `undefined`)
if ( !is(element[eventName], undefined) ) {
element[eventName] = undefined;
}
element.removeAttribute(eventName);
}
}
element = null;
return isSupported;
}
return isEventSupported;
})();
// hasOwnProperty shim by kangax needed for Safari 2.0 support
var _hasOwnProperty = ({}).hasOwnProperty, hasOwnProperty;
if ( !is(_hasOwnProperty, undefined) && !is(_hasOwnProperty.call, undefined) ) {
hasOwnProperty = function (object, property) {
return _hasOwnProperty.call(object, property);
};
}
else {
hasOwnProperty = function (object, property) { /* yes, this can give false positives/negatives, but most of the time we don't care about those */
return ((property in object) && is(object.constructor.prototype[property], undefined));
};
}
/**
* setCss applies given styles to the Modernizr DOM node.
*/
function setCss( str ) {
mStyle.cssText = str;
}
/**
* setCssAll extrapolates all vendor-specific css strings.
*/
function setCssAll( str1, str2 ) {
return setCss(prefixes.join(str1 + ';') + ( str2 || '' ));
}
/**
* is returns a boolean for if typeof obj is exactly type.
*/
function is( obj, type ) {
return typeof obj === type;
}
/**
* contains returns a boolean for if substr is found within str.
*/
function contains( str, substr ) {
return !!~('' + str).indexOf(substr);
}
/**
* testProps is a generic CSS / DOM property test; if a browser supports
* a certain property, it won't return undefined for it.
* A supported CSS property returns empty string when its not yet set.
*/
function testProps( props, prefixed ) {
for ( var i in props ) {
if ( mStyle[ props[i] ] !== undefined ) {
return prefixed == 'pfx' ? props[i] : true;
}
}
return false;
}
/**
* testPropsAll tests a list of DOM properties we want to check against.
* We specify literally ALL possible (known and/or likely) properties on
* the element including the non-vendor prefixed one, for forward-
* compatibility.
*/
function testPropsAll( prop, prefixed ) {
var ucProp = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + domPrefixes.join(ucProp + ' ') + ucProp).split(' ');
return testProps(props, prefixed);
}
/**
* testBundle tests a list of CSS features that require element and style injection.
* By bundling them together we can reduce the need to touch the DOM multiple times.
*/
/*>>testBundle*/
var testBundle = (function( styles, tests ) {
var style = styles.join(''),
len = tests.length;
injectElementWithStyles(style, function( node, rule ) {
var style = document.styleSheets[document.styleSheets.length - 1],
cssText = style.cssText || style.cssRules[0].cssText,
children = node.childNodes, hash = {};
while ( len-- ) {
hash[children[len].id] = children[len];
}
/*>>touch*/ Modernizr['touch'] = ('ontouchstart' in window) || hash['touch'].offsetTop === 9; /*>>touch*/
/*>>csstransforms3d*/ Modernizr['csstransforms3d'] = hash['csstransforms3d'].offsetLeft === 9; /*>>csstransforms3d*/
/*>>generatedcontent*/Modernizr['generatedcontent'] = hash['generatedcontent'].offsetHeight >= 1; /*>>generatedcontent*/
/*>>fontface*/ Modernizr['fontface'] = /src/i.test(cssText) &&
cssText.indexOf(rule.split(' ')[0]) === 0; /*>>fontface*/
}, len, tests);
})([
// Pass in styles to be injected into document
/*>>fontface*/ '@font-face {font-family:"font";src:url("//:")}' /*>>fontface*/
/*>>touch*/ ,['@media (',prefixes.join('touch-enabled),('),mod,')',
'{#touch{top:9px;position:absolute}}'].join('') /*>>touch*/
/*>>csstransforms3d*/ ,['@media (',prefixes.join('transform-3d),('),mod,')',
'{#csstransforms3d{left:9px;position:absolute}}'].join('')/*>>csstransforms3d*/
/*>>generatedcontent*/,['#generatedcontent:after{content:"',smile,'"}'].join('') /*>>generatedcontent*/
],
[
/*>>fontface*/ 'fontface' /*>>fontface*/
/*>>touch*/ ,'touch' /*>>touch*/
/*>>csstransforms3d*/ ,'csstransforms3d' /*>>csstransforms3d*/
/*>>generatedcontent*/,'generatedcontent' /*>>generatedcontent*/
]);/*>>testBundle*/
/**
* Tests
* -----
*/
tests['flexbox'] = function() {
/**
* setPrefixedValueCSS sets the property of a specified element
* adding vendor prefixes to the VALUE of the property.
* @param {Element} element
* @param {string} property The property name. This will not be prefixed.
* @param {string} value The value of the property. This WILL be prefixed.
* @param {string=} extra Additional CSS to append unmodified to the end of
* the CSS string.
*/
function setPrefixedValueCSS( element, property, value, extra ) {
property += ':';
element.style.cssText = (property + prefixes.join(value + ';' + property)).slice(0, -property.length) + (extra || '');
}
/**
* setPrefixedPropertyCSS sets the property of a specified element
* adding vendor prefixes to the NAME of the property.
* @param {Element} element
* @param {string} property The property name. This WILL be prefixed.
* @param {string} value The value of the property. This will not be prefixed.
* @param {string=} extra Additional CSS to append unmodified to the end of
* the CSS string.
*/
function setPrefixedPropertyCSS( element, property, value, extra ) {
element.style.cssText = prefixes.join(property + ':' + value + ';') + (extra || '');
}
var c = document.createElement('div'),
elem = document.createElement('div');
setPrefixedValueCSS(c, 'display', 'box', 'width:42px;padding:0;');
setPrefixedPropertyCSS(elem, 'box-flex', '1', 'width:10px;');
c.appendChild(elem);
docElement.appendChild(c);
var ret = elem.offsetWidth === 42;
c.removeChild(elem);
docElement.removeChild(c);
return ret;
};
// On the S60 and BB Storm, getContext exists, but always returns undefined
// http://github.com/Modernizr/Modernizr/issues/issue/97/
tests['canvas'] = function() {
var elem = document.createElement('canvas');
return !!(elem.getContext && elem.getContext('2d'));
};
tests['canvastext'] = function() {
return !!(Modernizr['canvas'] && is(document.createElement('canvas').getContext('2d').fillText, 'function'));
};
// This WebGL test may false positive.
// But really it's quite impossible to know whether webgl will succeed until after you create the context.
// You might have hardware that can support a 100x100 webgl canvas, but will not support a 1000x1000 webgl
// canvas. So this feature inference is weak, but intentionally so.
// It is known to false positive in FF4 with certain hardware and the iPad 2.
tests['webgl'] = function() {
return !!window.WebGLRenderingContext;
};
/*
* The Modernizr.touch test only indicates if the browser supports
* touch events, which does not necessarily reflect a touchscreen
* device, as evidenced by tablets running Windows 7 or, alas,
* the Palm Pre / WebOS (touch) phones.
*
* Additionally, Chrome (desktop) used to lie about its support on this,
* but that has since been rectified: http://crbug.com/36415
*
* We also test for Firefox 4 Multitouch Support.
*
* For more info, see: http://modernizr.github.com/Modernizr/touch.html
*/
tests['touch'] = function() {
return Modernizr['touch'];
};
/**
* geolocation tests for the new Geolocation API specification.
* This test is a standards compliant-only test; for more complete
* testing, including a Google Gears fallback, please see:
* http://code.google.com/p/geo-location-javascript/
* or view a fallback solution using google's geo API:
* http://gist.github.com/366184
*/
tests['geolocation'] = function() {
return !!navigator.geolocation;
};
// Per 1.6:
// This used to be Modernizr.crosswindowmessaging but the longer
// name has been deprecated in favor of a shorter and property-matching one.
// The old API is still available in 1.6, but as of 2.0 will throw a warning,
// and in the first release thereafter disappear entirely.
tests['postmessage'] = function() {
return !!window.postMessage;
};
// Web SQL database detection is tricky:
// In chrome incognito mode, openDatabase is truthy, but using it will
// throw an exception: http://crbug.com/42380
// We can create a dummy database, but there is no way to delete it afterwards.
// Meanwhile, Safari users can get prompted on any database creation.
// If they do, any page with Modernizr will give them a prompt:
// http://github.com/Modernizr/Modernizr/issues/closed#issue/113
// We have chosen to allow the Chrome incognito false positive, so that Modernizr
// doesn't litter the web with these test databases. As a developer, you'll have
// to account for this gotcha yourself.
tests['websqldatabase'] = function() {
var result = !!window.openDatabase;
/* if (result){
try {
result = !!openDatabase( mod + "testdb", "1.0", mod + "testdb", 2e4);
} catch(e) {
}
} */
return result;
};
// Vendors had inconsistent prefixing with the experimental Indexed DB:
// - Webkit's implementation is accessible through webkitIndexedDB
// - Firefox shipped moz_indexedDB before FF4b9, but since then has been mozIndexedDB
// For speed, we don't test the legacy (and beta-only) indexedDB
tests['indexedDB'] = function() {
for ( var i = -1, len = domPrefixes.length; ++i < len; ){
if ( window[domPrefixes[i].toLowerCase() + 'IndexedDB'] ){
return true;
}
}
return !!window.indexedDB;
};
// documentMode logic from YUI to filter out IE8 Compat Mode
// which false positives.
tests['hashchange'] = function() {
return isEventSupported('hashchange', window) && (document.documentMode === undefined || document.documentMode > 7);
};
// Per 1.6:
// This used to be Modernizr.historymanagement but the longer
// name has been deprecated in favor of a shorter and property-matching one.
// The old API is still available in 1.6, but as of 2.0 will throw a warning,
// and in the first release thereafter disappear entirely.
tests['history'] = function() {
return !!(window.history && history.pushState);
};
tests['draganddrop'] = function() {
return isEventSupported('dragstart') && isEventSupported('drop');
};
// Mozilla is targeting to land MozWebSocket for FF6
// bugzil.la/659324
tests['websockets'] = function() {
for ( var i = -1, len = domPrefixes.length; ++i < len; ){
if ( window[domPrefixes[i] + 'WebSocket'] ){
return true;
}
}
return 'WebSocket' in window;
};
// http://css-tricks.com/rgba-browser-support/
tests['rgba'] = function() {
// Set an rgba() color and check the returned value
setCss('background-color:rgba(150,255,150,.5)');
return contains(mStyle.backgroundColor, 'rgba');
};
tests['hsla'] = function() {
// Same as rgba(), in fact, browsers re-map hsla() to rgba() internally,
// except IE9 who retains it as hsla
setCss('background-color:hsla(120,40%,100%,.5)');
return contains(mStyle.backgroundColor, 'rgba') || contains(mStyle.backgroundColor, 'hsla');
};
tests['multiplebgs'] = function() {
// Setting multiple images AND a color on the background shorthand property
// and then querying the style.background property value for the number of
// occurrences of "url(" is a reliable method for detecting ACTUAL support for this!
setCss('background:url(//:),url(//:),red url(//:)');
// If the UA supports multiple backgrounds, there should be three occurrences
// of the string "url(" in the return value for elemStyle.background
return /(url\s*\(.*?){3}/.test(mStyle.background);
};
// In testing support for a given CSS property, it's legit to test:
// `elem.style[styleName] !== undefined`
// If the property is supported it will return an empty string,
// if unsupported it will return undefined.
// We'll take advantage of this quick test and skip setting a style
// on our modernizr element, but instead just testing undefined vs
// empty string.
tests['backgroundsize'] = function() {
return testPropsAll('backgroundSize');
};
tests['borderimage'] = function() {
return testPropsAll('borderImage');
};
// Super comprehensive table about all the unique implementations of
// border-radius: http://muddledramblings.com/table-of-css3-border-radius-compliance
tests['borderradius'] = function() {
return testPropsAll('borderRadius');
};
// WebOS unfortunately false positives on this test.
tests['boxshadow'] = function() {
return testPropsAll('boxShadow');
};
// FF3.0 will false positive on this test
tests['textshadow'] = function() {
return document.createElement('div').style.textShadow === '';
};
tests['opacity'] = function() {
// Browsers that actually have CSS Opacity implemented have done so
// according to spec, which means their return values are within the
// range of [0.0,1.0] - including the leading zero.
setCssAll('opacity:.55');
// The non-literal . in this regex is intentional:
// German Chrome returns this value as 0,55
// https://github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632
return /^0.55$/.test(mStyle.opacity);
};
tests['cssanimations'] = function() {
return testPropsAll('animationName');
};
tests['csscolumns'] = function() {
return testPropsAll('columnCount');
};
tests['cssgradients'] = function() {
/**
* For CSS Gradients syntax, please see:
* http://webkit.org/blog/175/introducing-css-gradients/
* https://developer.mozilla.org/en/CSS/-moz-linear-gradient
* https://developer.mozilla.org/en/CSS/-moz-radial-gradient
* http://dev.w3.org/csswg/css3-images/#gradients-
*/
var str1 = 'background-image:',
str2 = 'gradient(linear,left top,right bottom,from(#9f9),to(white));',
str3 = 'linear-gradient(left top,#9f9, white);';
setCss(
(str1 + prefixes.join(str2 + str1) + prefixes.join(str3 + str1)).slice(0, -str1.length)
);
return contains(mStyle.backgroundImage, 'gradient');
};
tests['cssreflections'] = function() {
return testPropsAll('boxReflect');
};
tests['csstransforms'] = function() {
return !!testProps(['transformProperty', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform']);
};
tests['csstransforms3d'] = function() {
var ret = !!testProps(['perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective']);
// Webkit’s 3D transforms are passed off to the browser's own graphics renderer.
// It works fine in Safari on Leopard and Snow Leopard, but not in Chrome in
// some conditions. As a result, Webkit typically recognizes the syntax but
// will sometimes throw a false positive, thus we must do a more thorough check:
if ( ret && 'webkitPerspective' in docElement.style ) {
// Webkit allows this media query to succeed only if the feature is enabled.
// `@media (transform-3d),(-o-transform-3d),(-moz-transform-3d),(-ms-transform-3d),(-webkit-transform-3d),(modernizr){ ... }`
ret = Modernizr['csstransforms3d'];
}
return ret;
};
tests['csstransitions'] = function() {
return testPropsAll('transitionProperty');
};
/*>>fontface*/
// @font-face detection routine by Diego Perini
// http://javascript.nwbox.com/CSSSupport/
tests['fontface'] = function() {
return Modernizr['fontface'];
};
/*>>fontface*/
// CSS generated content detection
tests['generatedcontent'] = function() {
return Modernizr['generatedcontent'];
};
// These tests evaluate support of the video/audio elements, as well as
// testing what types of content they support.
//
// We're using the Boolean constructor here, so that we can extend the value
// e.g. Modernizr.video // true
// Modernizr.video.ogg // 'probably'
//
// Codec values from : http://github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845
// thx to NielsLeenheer and zcorpan
// Note: in FF 3.5.1 and 3.5.0, "no" was a return value instead of empty string.
// Modernizr does not normalize for that.
tests['video'] = function() {
var elem = document.createElement('video'),
bool = false;
// IE9 Running on Windows Server SKU can cause an exception to be thrown, bug #224
try {
if ( bool = !!elem.canPlayType ) {
bool = new Boolean(bool);
bool.ogg = elem.canPlayType('video/ogg; codecs="theora"');
// Workaround required for IE9, which doesn't report video support without audio codec specified.
// bug 599718 @ msft connect
var h264 = 'video/mp4; codecs="avc1.42E01E';
bool.h264 = elem.canPlayType(h264 + '"') || elem.canPlayType(h264 + ', mp4a.40.2"');
bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"');
}
} catch(e) { }
return bool;
};
tests['audio'] = function() {
var elem = document.createElement('audio'),
bool = false;
try {
if ( bool = !!elem.canPlayType ) {
bool = new Boolean(bool);
bool.ogg = elem.canPlayType('audio/ogg; codecs="vorbis"');
bool.mp3 = elem.canPlayType('audio/mpeg;');
// Mimetypes accepted:
// https://developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements
// http://bit.ly/iphoneoscodecs
bool.wav = elem.canPlayType('audio/wav; codecs="1"');
bool.m4a = elem.canPlayType('audio/x-m4a;') || elem.canPlayType('audio/aac;');
}
} catch(e) { }
return bool;
};
// Firefox has made these tests rather unfun.
// In FF4, if disabled, window.localStorage should === null.
// Normally, we could not test that directly and need to do a
// `('localStorage' in window) && ` test first because otherwise Firefox will
// throw http://bugzil.la/365772 if cookies are disabled
// However, in Firefox 4 betas, if dom.storage.enabled == false, just mentioning
// the property will throw an exception. http://bugzil.la/599479
// This looks to be fixed for FF4 Final.
// Because we are forced to try/catch this, we'll go aggressive.
// FWIW: IE8 Compat mode supports these features completely:
// http://www.quirksmode.org/dom/html5.html
// But IE8 doesn't support either with local files
tests['localstorage'] = function() {
try {
return !!localStorage.getItem;
} catch(e) {
return false;
}
};
tests['sessionstorage'] = function() {
try {
return !!sessionStorage.getItem;
} catch(e){
return false;
}
};
tests['webworkers'] = function() {
return !!window.Worker;
};
tests['applicationcache'] = function() {
return !!window.applicationCache;
};
// Thanks to Erik Dahlstrom
tests['svg'] = function() {
return !!document.createElementNS && !!document.createElementNS(ns.svg, 'svg').createSVGRect;
};
// specifically for SVG inline in HTML, not within XHTML
// test page: paulirish.com/demo/inline-svg
tests['inlinesvg'] = function() {
var div = document.createElement('div');
div.innerHTML = '