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modernizr.js
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modernizr.js
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/*!
* Modernizr v2.6.0
* www.modernizr.com
*
* Copyright (c) Faruk Ates, Paul Irish, Alex Sexton
* Available under the BSD and 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
* <html> 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/
*
* Authors Faruk Ates, Paul Irish, Alex Sexton
* Contributors Ryan Seddon, Ben Alman
*/
window.Modernizr = (function( window, document, undefined ) {
var version = '2.6.0',
Modernizr = {},
/*>>cssclasses*/
// option for enabling the HTML classes to be added
enableClasses = true,
/*>>cssclasses*/
docElement = document.documentElement,
/**
* 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 /*>>inputelem*/ = document.createElement('input') /*>>inputelem*/ ,
/*>>smile*/
smile = ':)',
/*>>smile*/
toString = {}.toString,
// TODO :: make the prefixes more granular
/*>>prefixes*/
// List of property values to set for css tests. See ticket #21
prefixes = ' -webkit- -moz- -o- -ms- '.split(' '),
/*>>prefixes*/
/*>>domprefixes*/
// 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 uses a lowercase `ms` instead of the correct `Ms` in IE8+
// erik.eae.net/archives/2008/03/10/21.48.10/
// More here: github.com/Modernizr/Modernizr/issues/issue/21
omPrefixes = 'Webkit Moz O ms',
cssomPrefixes = omPrefixes.split(' '),
domPrefixes = omPrefixes.toLowerCase().split(' '),
/*>>domprefixes*/
/*>>ns*/
ns = {'svg': 'http://www.w3.org/2000/svg'},
/*>>ns*/
tests = {},
inputs = {},
attrs = {},
classes = [],
slice = classes.slice,
featureName, // used in testing loop
/*>>teststyles*/
// Inject element with style element and some CSS rules
injectElementWithStyles = function( rule, callback, nodes, testnames ) {
var style, ret, node,
div = document.createElement('div'),
// After page load injecting a fake body doesn't work so check if body exists
body = document.body,
// IE6 and 7 won't return offsetWidth or offsetHeight unless it's in the body element, so we fake it.
fakeBody = body ? body : document.createElement('body');
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);
}
}
// <style> elements in IE6-9 are considered 'NoScope' elements and therefore will be removed
// when injected with innerHTML. To get around this you need to prepend the 'NoScope' element
// with a 'scoped' element, in our case the soft-hyphen entity as it won't mess with our measurements.
// msdn.microsoft.com/en-us/library/ms533897%28VS.85%29.aspx
// Documents served as xml will throw if using ­ so use xml friendly encoded version. See issue #277
style = ['­','<style id="s', mod, '">', rule, '</style>'].join('');
div.id = mod;
// IE6 will false positive on some tests due to the style element inside the test div somehow interfering offsetHeight, so insert it into body or fakebody.
// Opera will act all quirky when injecting elements in documentElement when page is served as xml, needs fakebody too. #270
(body ? div : fakeBody).innerHTML += style;
fakeBody.appendChild(div);
if ( !body ) {
//avoid crashing IE8, if background image is used
fakeBody.style.background = "";
docElement.appendChild(fakeBody);
}
ret = callback(div, rule);
// If this is done after page load we don't want to remove the body so check if body exists
!body ? fakeBody.parentNode.removeChild(fakeBody) : div.parentNode.removeChild(div);
return !!ret;
},
/*>>teststyles*/
/*>>mq*/
// adapted from matchMedia polyfill
// by Scott Jehl and Paul Irish
// gist.github.com/786768
testMediaQuery = function( mq ) {
var matchMedia = window.matchMedia || window.msMatchMedia;
if ( 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;
},
/*>>mq*/
/*>>hasevent*/
//
// isEventSupported determines if a given element supports the given event
// kangax.github.com/iseventsupported/
//
// The following results are known incorrects:
// Modernizr.hasEvent("webkitTransitionEnd", elem) // false negative
// Modernizr.hasEvent("textInput") // in Webkit. github.com/Modernizr/Modernizr/issues/333
// ...
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;
})(),
/*>>hasevent*/
// TODO :: Add flag for hasownprop ? didn't last time
// hasOwnProperty shim by kangax needed for Safari 2.0 support
_hasOwnProperty = ({}).hasOwnProperty, hasOwnProp;
if ( !is(_hasOwnProperty, 'undefined') && !is(_hasOwnProperty.call, 'undefined') ) {
hasOwnProp = function (object, property) {
return _hasOwnProperty.call(object, property);
};
}
else {
hasOwnProp = 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'));
};
}
// Adapted from ES5-shim https://github.com/kriskowal/es5-shim/blob/master/es5-shim.js
// es5.github.com/#x15.3.4.5
if (!Function.prototype.bind) {
Function.prototype.bind = function bind(that) {
var target = this;
if (typeof target != "function") {
throw new TypeError();
}
var args = slice.call(arguments, 1),
bound = function () {
if (this instanceof bound) {
var F = function(){};
F.prototype = target.prototype;
var self = new F();
var result = target.apply(
self,
args.concat(slice.call(arguments))
);
if (Object(result) === result) {
return result;
}
return self;
} else {
return target.apply(
that,
args.concat(slice.call(arguments))
);
}
};
return bound;
};
}
/**
* 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);
}
/*>>testprop*/
// testProps is a generic CSS / DOM property test.
// 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.
// Because the testing of the CSS property names (with "-", as
// opposed to the camelCase DOM properties) is non-portable and
// non-standard but works in WebKit and IE (but not Gecko or Opera),
// we explicitly reject properties with dashes so that authors
// developing in WebKit or IE first don't end up with
// browser-specific content by accident.
function testProps( props, prefixed ) {
for ( var i in props ) {
var prop = props[i];
if ( prop.indexOf("-") == -1 && mStyle[prop] !== undefined ) {
return prefixed == 'pfx' ? prop : true;
}
}
return false;
}
/*>>testprop*/
// TODO :: add testDOMProps
/**
* testDOMProps is a generic DOM property test; if a browser supports
* a certain property, it won't return undefined for it.
*/
function testDOMProps( props, obj, elem ) {
for ( var i in props ) {
var item = obj[props[i]];
if ( item !== undefined) {
// return the property name as a string
if (elem === false) return props[i];
// let's bind a function
if (is(item, 'function')){
// default to autobind unless override
return item.bind(elem || obj);
}
// return the unbound function or obj or value
return item;
}
}
return false;
}
/*>>testallprops*/
/**
* 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, elem ) {
var ucProp = prop.charAt(0).toUpperCase() + prop.slice(1),
props = (prop + ' ' + cssomPrefixes.join(ucProp + ' ') + ucProp).split(' ');
// did they call .prefixed('boxSizing') or are we just testing a prop?
if(is(prefixed, "string") || is(prefixed, "undefined")) {
return testProps(props, prefixed);
// otherwise, they called .prefixed('requestAnimationFrame', window[, elem])
} else {
props = (prop + ' ' + (domPrefixes).join(ucProp + ' ') + ucProp).split(' ');
return testDOMProps(props, prefixed, elem);
}
}
/*>>testallprops*/
/**
* Tests
* -----
*/
// The *new* flexbox
// dev.w3.org/csswg/css3-flexbox
tests['flexbox'] = function() {
return testPropsAll('flexWrap');
};
// The *old* flexbox
// www.w3.org/TR/2009/WD-css3-flexbox-20090723/
tests['flexboxlegacy'] = function() {
return testPropsAll('boxDirection');
};
// On the S60 and BB Storm, getContext exists, but always returns undefined
// so we actually have to call getContext() to verify
// 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'));
};
// webk.it/70117 is tracking a legit WebGL feature detect proposal
// We do a soft detect which may false positive in order to avoid
// an expensive context creation: bugzil.la/732441
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: crbug.com/36415
*
* We also test for Firefox 4 Multitouch Support.
*
* For more info, see: modernizr.github.com/Modernizr/touch.html
*/
tests['touch'] = function() {
var bool;
if(('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch) {
bool = true;
} else {
injectElementWithStyles(['@media (',prefixes.join('touch-enabled),('),mod,')','{#modernizr{top:9px;position:absolute}}'].join(''), function( node ) {
bool = node.offsetTop === 9;
});
}
return bool;
};
// geolocation is often considered a trivial feature detect...
// Turns out, it's quite tricky to get right:
//
// Using !!navigator.geolocation does two things we don't want. It:
// 1. Leaks memory in IE9: github.com/Modernizr/Modernizr/issues/513
// 2. Disables page caching in WebKit: webk.it/43956
//
// Meanwhile, in Firefox < 8, an about:config setting could expose
// a false positive that would throw an exception: bugzil.la/688158
tests['geolocation'] = function() {
return 'geolocation' in navigator;
};
tests['postmessage'] = function() {
return !!window.postMessage;
};
// Chrome incognito mode used to throw an exception when using openDatabase
// It doesn't anymore.
tests['websqldatabase'] = function() {
return !!window.openDatabase;
};
// 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() {
return !!testPropsAll("indexedDB", window);
};
// 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() {
var div = document.createElement('div');
return ('draggable' in div) || ('ondragstart' in div && 'ondrop' in div);
};
// FF3.6 was EOL'ed on 4/24/12, but the ESR version of FF10
// will be supported until FF19 (2/12/13), at which time, ESR becomes FF17.
// FF10 still uses prefixes, so check for it until then.
// for more ESR info, see: mozilla.org/en-US/firefox/organizations/faq/
tests['websockets'] = function() {
return 'WebSocket' in window || 'MozWebSocket' in window;
};
// 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(https://),url(https://),red url(https://)');
// 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);
};
// this will false positive in Opera Mini
// github.com/Modernizr/Modernizr/issues/396
tests['backgroundsize'] = function() {
return testPropsAll('backgroundSize');
};
tests['borderimage'] = function() {
return testPropsAll('borderImage');
};
// Super comprehensive table about all the unique implementations of
// border-radius: 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
// github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632
return (/^0.55$/).test(mStyle.opacity);
};
// Note, Android < 4 will pass this test, but can only animate
// a single property at a time
// daneden.me/2011/12/putting-up-with-androids-bullshit/
tests['cssanimations'] = function() {
return testPropsAll('animationName');
};
tests['csscolumns'] = function() {
return testPropsAll('columnCount');
};
tests['cssgradients'] = function() {
/**
* For CSS Gradients syntax, please see:
* webkit.org/blog/175/introducing-css-gradients/
* developer.mozilla.org/en/CSS/-moz-linear-gradient
* developer.mozilla.org/en/CSS/-moz-radial-gradient
* 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(
// legacy webkit syntax (FIXME: remove when syntax not in use anymore)
(str1 + '-webkit- '.split(' ').join(str2 + str1) +
// standard syntax // trailing 'background-image:'
prefixes.join(str3 + str1)).slice(0, -str1.length)
);
return contains(mStyle.backgroundImage, 'gradient');
};
tests['cssreflections'] = function() {
return testPropsAll('boxReflect');
};
tests['csstransforms'] = function() {
return !!testPropsAll('transform');
};
tests['csstransforms3d'] = function() {
var ret = !!testPropsAll('perspective');
// 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),(-webkit-transform-3d){ ... }`
injectElementWithStyles('@media (transform-3d),(-webkit-transform-3d){#modernizr{left:9px;position:absolute;height:3px;}}', function( node, rule ) {
ret = node.offsetLeft === 9 && node.offsetHeight === 3;
});
}
return ret;
};
tests['csstransitions'] = function() {
return testPropsAll('transition');
};
/*>>fontface*/
// @font-face detection routine by Diego Perini
// javascript.nwbox.com/CSSSupport/
// false positives:
// WebOS github.com/Modernizr/Modernizr/issues/342
// WP7 github.com/Modernizr/Modernizr/issues/538
tests['fontface'] = function() {
var bool;
injectElementWithStyles('@font-face {font-family:"font";src:url("https://")}', function( node, rule ) {
var style = document.getElementById('smodernizr'),
sheet = style.sheet || style.styleSheet,
cssText = sheet ? (sheet.cssRules && sheet.cssRules[0] ? sheet.cssRules[0].cssText : sheet.cssText || '') : '';
bool = /src/i.test(cssText) && cssText.indexOf(rule.split(' ')[0]) === 0;
});
return bool;
};
/*>>fontface*/
// CSS generated content detection
tests['generatedcontent'] = function() {
var bool;
injectElementWithStyles(['#modernizr:after{content:"',smile,'";visibility:hidden}'].join(''), function( node ) {
bool = node.offsetHeight >= 1;
});
return bool;
};
// 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 : github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845
// thx to NielsLeenheer and zcorpan
// Note: in some older browsers, "no" was a return value instead of empty string.
// It was live in FF3.5.0 and 3.5.1, but fixed in 3.5.2
// It was also live in Safari 4.0.0 - 4.0.4, but fixed in 4.0.5
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"') .replace(/^no$/,'');
// Without QuickTime, this value will be `undefined`. github.com/Modernizr/Modernizr/issues/546
bool.h264 = elem.canPlayType('video/mp4; codecs="avc1.42E01E"') .replace(/^no$/,'');
bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"').replace(/^no$/,'');
}
} 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"').replace(/^no$/,'');
bool.mp3 = elem.canPlayType('audio/mpeg;') .replace(/^no$/,'');
// Mimetypes accepted:
// developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements
// bit.ly/iphoneoscodecs
bool.wav = elem.canPlayType('audio/wav; codecs="1"') .replace(/^no$/,'');
bool.m4a = ( elem.canPlayType('audio/x-m4a;') ||
elem.canPlayType('audio/aac;')) .replace(/^no$/,'');
}
} catch(e) { }
return bool;
};
// 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 bugzil.la/365772 if cookies are disabled
// Also in iOS5 Private Browsing mode, attempting to use localStorage.setItem
// will throw the exception:
// QUOTA_EXCEEDED_ERRROR DOM Exception 22.
// Peculiarly, getItem and removeItem calls do not throw.
// Because we are forced to try/catch this, we'll go aggressive.
// Just FWIW: IE8 Compat mode supports these features completely:
// www.quirksmode.org/dom/html5.html
// But IE8 doesn't support either with local files
tests['localstorage'] = function() {
try {
localStorage.setItem(mod, mod);
localStorage.removeItem(mod);
return true;
} catch(e) {
return false;
}
};
tests['sessionstorage'] = function() {
try {
sessionStorage.setItem(mod, mod);
sessionStorage.removeItem(mod);
return true;
} 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 = '<svg/>';
return (div.firstChild && div.firstChild.namespaceURI) == ns.svg;
};
// SVG SMIL animation
tests['smil'] = function() {
return !!document.createElementNS && /SVGAnimate/.test(toString.call(document.createElementNS(ns.svg, 'animate')));
};
// This test is only for clip paths in SVG proper, not clip paths on HTML content
// demo: srufaculty.sru.edu/david.dailey/svg/newstuff/clipPath4.svg
// However read the comments to dig into applying SVG clippaths to HTML content here:
// github.com/Modernizr/Modernizr/issues/213#issuecomment-1149491
tests['svgclippaths'] = function() {
return !!document.createElementNS && /SVGClipPath/.test(toString.call(document.createElementNS(ns.svg, 'clipPath')));
};
/*>>webforms*/
// input features and input types go directly onto the ret object, bypassing the tests loop.
// Hold this guy to execute in a moment.
function webforms() {
/*>>input*/
// Run through HTML5's new input attributes to see if the UA understands any.
// We're using f which is the <input> element created early on
// Mike Taylr has created a comprehensive resource for testing these attributes
// when applied to all input types:
// miketaylr.com/code/input-type-attr.html
// spec: www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
// Only input placeholder is tested while textarea's placeholder is not.
// Currently Safari 4 and Opera 11 have support only for the input placeholder
// Both tests are available in feature-detects/forms-placeholder.js
Modernizr['input'] = (function( props ) {
for ( var i = 0, len = props.length; i < len; i++ ) {
attrs[ props[i] ] = !!(props[i] in inputElem);
}
if (attrs.list){
// safari false positive's on datalist: webk.it/74252
// see also github.com/Modernizr/Modernizr/issues/146
attrs.list = !!(document.createElement('datalist') && window.HTMLDataListElement);
}
return attrs;
})('autocomplete autofocus list placeholder max min multiple pattern required step'.split(' '));
/*>>input*/
/*>>inputtypes*/
// Run through HTML5's new input types to see if the UA understands any.
// This is put behind the tests runloop because it doesn't return a
// true/false like all the other tests; instead, it returns an object
// containing each input type with its corresponding true/false value
// Big thanks to @miketaylr for the html5 forms expertise. miketaylr.com/
Modernizr['inputtypes'] = (function(props) {
for ( var i = 0, bool, inputElemType, defaultView, len = props.length; i < len; i++ ) {
inputElem.setAttribute('type', inputElemType = props[i]);
bool = inputElem.type !== 'text';
// We first check to see if the type we give it sticks..
// If the type does, we feed it a textual value, which shouldn't be valid.
// If the value doesn't stick, we know there's input sanitization which infers a custom UI
if ( bool ) {
inputElem.value = smile;
inputElem.style.cssText = 'position:absolute;visibility:hidden;';
if ( /^range$/.test(inputElemType) && inputElem.style.WebkitAppearance !== undefined ) {
docElement.appendChild(inputElem);
defaultView = document.defaultView;
// Safari 2-4 allows the smiley as a value, despite making a slider
bool = defaultView.getComputedStyle &&
defaultView.getComputedStyle(inputElem, null).WebkitAppearance !== 'textfield' &&
// Mobile android web browser has false positive, so must
// check the height to see if the widget is actually there.
(inputElem.offsetHeight !== 0);
docElement.removeChild(inputElem);
} else if ( /^(search|tel)$/.test(inputElemType) ){
// Spec doesn't define any special parsing or detectable UI
// behaviors so we pass these through as true
// Interestingly, opera fails the earlier test, so it doesn't
// even make it here.
} else if ( /^(url|email)$/.test(inputElemType) ) {
// Real url and email support comes with prebaked validation.
bool = inputElem.checkValidity && inputElem.checkValidity() === false;
} else {
// If the upgraded input compontent rejects the :) text, we got a winner
bool = inputElem.value != smile;
}
}
inputs[ props[i] ] = !!bool;
}
return inputs;
})('search tel url email datetime date month week time datetime-local number range color'.split(' '));
/*>>inputtypes*/
}
/*>>webforms*/
// End of test definitions
// -----------------------
// Run through all tests and detect their support in the current UA.
// todo: hypothetically we could be doing an array of tests and use a basic loop here.
for ( var feature in tests ) {
if ( hasOwnProp(tests, feature) ) {
// run the test, throw the return value into the Modernizr,
// then based on that boolean, define an appropriate className
// and push it into an array of classes we'll join later.
featureName = feature.toLowerCase();
Modernizr[featureName] = tests[feature]();
classes.push((Modernizr[featureName] ? '' : 'no-') + featureName);
}
}
/*>>webforms*/
// input tests need to run.
Modernizr.input || webforms();
/*>>webforms*/
/**
* addTest allows the user to define their own feature tests
* the result will be added onto the Modernizr object,
* as well as an appropriate className set on the html element
*
* @param feature - String naming the feature
* @param test - Function returning true if feature is supported, false if not
*/
Modernizr.addTest = function ( feature, test ) {
if ( typeof feature == 'object' ) {
for ( var key in feature ) {
if ( hasOwnProp( feature, key ) ) {
Modernizr.addTest( key, feature[ key ] );
}
}
} else {
feature = feature.toLowerCase();
if ( Modernizr[feature] !== undefined ) {
// we're going to quit if you're trying to overwrite an existing test
// if we were to allow it, we'd do this:
// var re = new RegExp("\\b(no-)?" + feature + "\\b");
// docElement.className = docElement.className.replace( re, '' );
// but, no rly, stuff 'em.
return Modernizr;
}
test = typeof test == 'function' ? test() : test;
if (enableClasses) {
docElement.className += ' ' + (test ? '' : 'no-') + feature;
}
Modernizr[feature] = test;
}
return Modernizr; // allow chaining.
};
// Reset modElem.cssText to nothing to reduce memory footprint.
setCss('');
modElem = inputElem = null;
/*>>shiv*/
/*! HTML5 Shiv v3.6 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed */
;(function(window, document) {
/*jshint evil:true */