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{
"name": "modernizr",
"homepage": "https://github.com/Modernizr/Modernizr",
"version": "2.8.3",
"_release": "2.8.3",
"_resolution": {
"type": "version",
"tag": "v2.8.3",
"commit": "d6bb30c0f12ebb3ddd01e90b0bf435e1c34e6f11"
},
"_source": "https://github.com/Modernizr/Modernizr.git",
"_target": "~2.8.1",
"_originalSource": "modernizr"
}

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# editorconfig.org
root = true
[*]
indent_style = space
indent_size = 2
end_of_line = lf
charset = utf-8
trim_trailing_whitespace = true
insert_final_newline = true

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// a[download] attribute
// When used on an <a>, this attribute signifies that the resource it
// points to should be downloaded by the browser rather than navigating to it.
// http://developers.whatwg.org/links.html#downloading-resources
// By Addy Osmani
Modernizr.addTest('adownload', 'download' in document.createElement('a'));

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// Mozilla Audio Data API
// https://wiki.mozilla.org/Audio_Data_API
// by Addy Osmani
Modernizr.addTest('audiodata', !!(window.Audio));

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// Web Audio API
// https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html
// By Addy Osmani
Modernizr.addTest('webaudio', !!(window.webkitAudioContext || window.AudioContext));

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// Battery API
// https://developer.mozilla.org/en/DOM/window.navigator.mozBattery
// By: Paul Sayre
Modernizr.addTest('battery',
!!Modernizr.prefixed('battery', navigator)
);

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// Low Battery Level
// Enable a developer to remove CPU intensive CSS/JS when battery is low
// developer.mozilla.org/en/DOM/window.navigator.mozBattery
// By: Paul Sayre
Modernizr.addTest('lowbattery', function () {
var minLevel = 0.20,
battery = Modernizr.prefixed('battery', navigator);
return !!(battery && !battery.charging && battery.level <= minLevel);
});

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// Blob constructor
// http://dev.w3.org/2006/webapi/FileAPI/#constructorBlob
Modernizr.addTest('blobconstructor', function () {
try {
return !!new Blob();
} catch (e) {
return false;
}
});

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// canvas.toDataURL type support
// http://www.w3.org/TR/html5/the-canvas-element.html#dom-canvas-todataurl
// This test is asynchronous. Watch out.
(function () {
if (!Modernizr.canvas) {
return false;
}
var image = new Image(),
canvas = document.createElement('canvas'),
ctx = canvas.getContext('2d');
image.onload = function() {
ctx.drawImage(image, 0, 0);
Modernizr.addTest('todataurljpeg', function() {
return canvas.toDataURL('image/jpeg').indexOf('data:image/jpeg') === 0;
});
Modernizr.addTest('todataurlwebp', function() {
return canvas.toDataURL('image/webp').indexOf('data:image/webp') === 0;
});
};
image.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACklEQVR4nGMAAQAABQABDQottAAAAABJRU5ErkJggg==';
}());

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// contentEditable
// http://www.whatwg.org/specs/web-apps/current-work/multipage/editing.html#contenteditable
// this is known to false positive in some mobile browsers
// here is a whitelist of verified working browsers:
// https://github.com/NielsLeenheer/html5test/blob/549f6eac866aa861d9649a0707ff2c0157895706/scripts/engine.js#L2083
Modernizr.addTest('contenteditable',
'contentEditable' in document.documentElement);

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// Test for (experimental) Content Security Policy 1.1 support.
//
// This feature is still quite experimental, but is available now in Chrome 22.
// If the `SecurityPolicy` property is available, you can be sure the browser
// supports CSP. If it's not available, the browser still might support an
// earlier version of the CSP spec.
//
// Editor's Draft: https://dvcs.w3.org/hg/content-security-policy/raw-file/tip/csp-specification.dev.html
Modernizr.addTest('contentsecuritypolicy', ('securityPolicy' in document || 'SecurityPolicy' in document));

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// http://www.w3.org/TR/html5/interactive-elements.html#context-menus
// Demo at http://thewebrocks.com/demos/context-menu/
Modernizr.addTest(
'contextmenu',
('contextMenu' in document.documentElement && 'HTMLMenuItemElement' in window)
);

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// by tauren
// https://github.com/Modernizr/Modernizr/issues/191
Modernizr.addTest('cookies', function () {
// Quick test if browser has cookieEnabled host property
if (navigator.cookieEnabled) return true;
// Create cookie
document.cookie = "cookietest=1";
var ret = document.cookie.indexOf("cookietest=") != -1;
// Delete cookie
document.cookie = "cookietest=1; expires=Thu, 01-Jan-1970 00:00:01 GMT";
return ret;
});

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// cors
// By Theodoor van Donge
Modernizr.addTest('cors', !!(window.XMLHttpRequest && 'withCredentials' in new XMLHttpRequest()));

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/*
https://developer.mozilla.org/en/CSS/background-position
http://www.w3.org/TR/css3-background/#background-position
Example: http://jsfiddle.net/Blink/bBXvt/
*/
(function() {
var elem = document.createElement('a'),
eStyle = elem.style,
val = "right 10px bottom 10px";
Modernizr.addTest('bgpositionshorthand', function(){
eStyle.cssText = "background-position: " + val + ";";
return (eStyle.backgroundPosition === val);
});
}());

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/*
Allan Lei https://github.com/allanlei
Check adapted from https://github.com/brandonaaron/jquery-cssHooks/blob/master/bgpos.js
Test: http://jsfiddle.net/allanlei/R8AYS/
*/
Modernizr.addTest('bgpositionxy', function() {
return Modernizr.testStyles('#modernizr {background-position: 3px 5px;}', function(elem) {
var cssStyleDeclaration = window.getComputedStyle ? getComputedStyle(elem, null) : elem.currentStyle;
var xSupport = (cssStyleDeclaration.backgroundPositionX == '3px') || (cssStyleDeclaration['background-position-x'] == '3px');
var ySupport = (cssStyleDeclaration.backgroundPositionY == '5px') || (cssStyleDeclaration['background-position-y'] == '5px');
return xSupport && ySupport;
});
});

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// developer.mozilla.org/en/CSS/background-repeat
// test page: jsbin.com/uzesun/
// http://jsfiddle.net/ryanseddon/yMLTQ/6/
(function(){
function getBgRepeatValue(elem){
return (window.getComputedStyle ?
getComputedStyle(elem, null).getPropertyValue('background') :
elem.currentStyle['background']);
}
Modernizr.testStyles(' #modernizr { background-repeat: round; } ', function(elem, rule){
Modernizr.addTest('bgrepeatround', getBgRepeatValue(elem) == 'round');
});
Modernizr.testStyles(' #modernizr { background-repeat: space; } ', function(elem, rule){
Modernizr.addTest('bgrepeatspace', getBgRepeatValue(elem) == 'space');
});
})();

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// developer.mozilla.org/en/CSS/background-size
Modernizr.testStyles( '#modernizr{background-size:cover}', function( elem ) {
var style = window.getComputedStyle ?
window.getComputedStyle( elem, null )
: elem.currentStyle;
Modernizr.addTest( 'bgsizecover', style.backgroundSize == 'cover' );
});

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// developer.mozilla.org/en/CSS/box-sizing
// github.com/Modernizr/Modernizr/issues/248
Modernizr.addTest("boxsizing",function(){
return Modernizr.testAllProps("boxSizing") && (document.documentMode === undefined || document.documentMode > 7);
});

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// Method of allowing calculated values for length units, i.e. width: calc(100%-3em) http://caniuse.com/#search=calc
// By @calvein
Modernizr.addTest('csscalc', function() {
var prop = 'width:';
var value = 'calc(10px);';
var el = document.createElement('div');
el.style.cssText = prop + Modernizr._prefixes.join(value + prop);
return !!el.style.length;
});

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// cubic-bezier values can't be > 1 for Webkit until bug #45761 (https://bugs.webkit.org/show_bug.cgi?id=45761) is fixed
// By @calvein
Modernizr.addTest('cubicbezierrange', function() {
var el = document.createElement('div');
el.style.cssText = Modernizr._prefixes.join('transition-timing-function' + ':cubic-bezier(1,0,0,1.1); ');
return !!el.style.length;
});

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// by alanhogan
// https://github.com/Modernizr/Modernizr/issues/198
// http://css-tricks.com/596-run-in/
Modernizr.testStyles(' #modernizr { display: run-in; } ', function(elem, rule){
var ret = (window.getComputedStyle ?
getComputedStyle(elem, null).getPropertyValue('display') :
elem.currentStyle['display']);
Modernizr.addTest('display-runin', ret == 'run-in');
});

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// display: table and table-cell test. (both are tested under one name "table-cell" )
// By @scottjehl
// all additional table display values are here: http://pastebin.com/Gk9PeVaQ though Scott has seen some IE false positives with that sort of weak detection.
// more testing neccessary perhaps.
Modernizr.addTest( "display-table",function(){
var doc = window.document,
docElem = doc.documentElement,
parent = doc.createElement( "div" ),
child = doc.createElement( "div" ),
childb = doc.createElement( "div" ),
ret;
parent.style.cssText = "display: table";
child.style.cssText = childb.style.cssText = "display: table-cell; padding: 10px";
parent.appendChild( child );
parent.appendChild( childb );
docElem.insertBefore( parent, docElem.firstChild );
ret = child.offsetLeft < childb.offsetLeft;
docElem.removeChild(parent);
return ret;
});

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// https://github.com/Modernizr/Modernizr/issues/615
// documentMode is needed for false positives in oldIE, please see issue above
Modernizr.addTest('cssfilters', function() {
var el = document.createElement('div');
el.style.cssText = Modernizr._prefixes.join('filter' + ':blur(2px); ');
return !!el.style.length && ((document.documentMode === undefined || document.documentMode > 9));
});

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/* see http://davidnewton.ca/the-current-state-of-hyphenation-on-the-web
http://davidnewton.ca/demos/hyphenation/test.html
There are three tests:
1. csshyphens - tests hyphens:auto actually adds hyphens to text
2. softhyphens - tests that &shy; does its job
3. softhyphensfind - tests that in-browser Find functionality still works correctly with &shy;
These tests currently require document.body to be present
Hyphenation is language specific, sometimes.
See for more details: http://code.google.com/p/hyphenator/source/diff?spec=svn975&r=975&format=side&path=/trunk/Hyphenator.js#sc_svn975_313
If loading Hyphenator.js via Modernizr.load, be cautious of issue 158: http://code.google.com/p/hyphenator/issues/detail?id=158
More details at https://github.com/Modernizr/Modernizr/issues/312
*/
(function() {
if (!document.body){
window.console && console.warn('document.body doesn\'t exist. Modernizr hyphens test needs it.');
return;
}
// functional test of adding hyphens:auto
function test_hyphens_css() {
try {
/* create a div container and a span within that
* these have to be appended to document.body, otherwise some browsers can give false negative */
var div = document.createElement('div'),
span = document.createElement('span'),
divStyle = div.style,
spanHeight = 0,
spanWidth = 0,
result = false,
firstChild = document.body.firstElementChild || document.body.firstChild;
div.appendChild(span);
span.innerHTML = 'Bacon ipsum dolor sit amet jerky velit in culpa hamburger et. Laborum dolor proident, enim dolore duis commodo et strip steak. Salami anim et, veniam consectetur dolore qui tenderloin jowl velit sirloin. Et ad culpa, fatback cillum jowl ball tip ham hock nulla short ribs pariatur aute. Pig pancetta ham bresaola, ut boudin nostrud commodo flank esse cow tongue culpa. Pork belly bresaola enim pig, ea consectetur nisi. Fugiat officia turkey, ea cow jowl pariatur ullamco proident do laborum velit sausage. Magna biltong sint tri-tip commodo sed bacon, esse proident aliquip. Ullamco ham sint fugiat, velit in enim sed mollit nulla cow ut adipisicing nostrud consectetur. Proident dolore beef ribs, laborum nostrud meatball ea laboris rump cupidatat labore culpa. Shankle minim beef, velit sint cupidatat fugiat tenderloin pig et ball tip. Ut cow fatback salami, bacon ball tip et in shank strip steak bresaola. In ut pork belly sed mollit tri-tip magna culpa veniam, short ribs qui in andouille ham consequat. Dolore bacon t-bone, velit short ribs enim strip steak nulla. Voluptate labore ut, biltong swine irure jerky. Cupidatat excepteur aliquip salami dolore. Ball tip strip steak in pork dolor. Ad in esse biltong. Dolore tenderloin exercitation ad pork loin t-bone, dolore in chicken ball tip qui pig. Ut culpa tongue, sint ribeye dolore ex shank voluptate hamburger. Jowl et tempor, boudin pork chop labore ham hock drumstick consectetur tri-tip elit swine meatball chicken ground round. Proident shankle mollit dolore. Shoulder ut duis t-bone quis reprehenderit. Meatloaf dolore minim strip steak, laboris ea aute bacon beef ribs elit shank in veniam drumstick qui. Ex laboris meatball cow tongue pork belly. Ea ball tip reprehenderit pig, sed fatback boudin dolore flank aliquip laboris eu quis. Beef ribs duis beef, cow corned beef adipisicing commodo nisi deserunt exercitation. Cillum dolor t-bone spare ribs, ham hock est sirloin. Brisket irure meatloaf in, boudin pork belly sirloin ball tip. Sirloin sint irure nisi nostrud aliqua. Nostrud nulla aute, enim officia culpa ham hock. Aliqua reprehenderit dolore sunt nostrud sausage, ea boudin pork loin ut t-bone ham tempor. Tri-tip et pancetta drumstick laborum. Ham hock magna do nostrud in proident. Ex ground round fatback, venison non ribeye in.';
document.body.insertBefore(div, firstChild);
/* get size of unhyphenated text */
divStyle.cssText = 'position:absolute;top:0;left:0;width:5em;text-align:justify;text-justification:newspaper;';
spanHeight = span.offsetHeight;
spanWidth = span.offsetWidth;
/* compare size with hyphenated text */
divStyle.cssText = 'position:absolute;top:0;left:0;width:5em;text-align:justify;'+
'text-justification:newspaper;'+
Modernizr._prefixes.join('hyphens:auto; ');
result = (span.offsetHeight != spanHeight || span.offsetWidth != spanWidth);
/* results and cleanup */
document.body.removeChild(div);
div.removeChild(span);
return result;
} catch(e) {
return false;
}
}
// for the softhyphens test
function test_hyphens(delimiter, testWidth) {
try {
/* create a div container and a span within that
* these have to be appended to document.body, otherwise some browsers can give false negative */
var div = document.createElement('div'),
span = document.createElement('span'),
divStyle = div.style,
spanSize = 0,
result = false,
result1 = false,
result2 = false,
firstChild = document.body.firstElementChild || document.body.firstChild;
divStyle.cssText = 'position:absolute;top:0;left:0;overflow:visible;width:1.25em;';
div.appendChild(span);
document.body.insertBefore(div, firstChild);
/* get height of unwrapped text */
span.innerHTML = 'mm';
spanSize = span.offsetHeight;
/* compare height w/ delimiter, to see if it wraps to new line */
span.innerHTML = 'm' + delimiter + 'm';
result1 = (span.offsetHeight > spanSize);
/* if we're testing the width too (i.e. for soft-hyphen, not zws),
* this is because tested Blackberry devices will wrap the text but not display the hyphen */
if (testWidth) {
/* get width of wrapped, non-hyphenated text */
span.innerHTML = 'm<br />m';
spanSize = span.offsetWidth;
/* compare width w/ wrapped w/ delimiter to see if hyphen is present */
span.innerHTML = 'm' + delimiter + 'm';
result2 = (span.offsetWidth > spanSize);
} else {
result2 = true;
}
/* results and cleanup */
if (result1 === true && result2 === true) { result = true; }
document.body.removeChild(div);
div.removeChild(span);
return result;
} catch(e) {
return false;
}
}
// testing if in-browser Find functionality will work on hyphenated text
function test_hyphens_find(delimiter) {
try {
/* create a dummy input for resetting selection location, and a div container
* these have to be appended to document.body, otherwise some browsers can give false negative
* div container gets the doubled testword, separated by the delimiter
* Note: giving a width to div gives false positive in iOS Safari */
var dummy = document.createElement('input'),
div = document.createElement('div'),
testword = 'lebowski',
result = false,
textrange,
firstChild = document.body.firstElementChild || document.body.firstChild;
div.innerHTML = testword + delimiter + testword;
document.body.insertBefore(div, firstChild);
document.body.insertBefore(dummy, div);
/* reset the selection to the dummy input element, i.e. BEFORE the div container
* stackoverflow.com/questions/499126/jquery-set-cursor-position-in-text-area */
if (dummy.setSelectionRange) {
dummy.focus();
dummy.setSelectionRange(0,0);
} else if (dummy.createTextRange) {
textrange = dummy.createTextRange();
textrange.collapse(true);
textrange.moveEnd('character', 0);
textrange.moveStart('character', 0);
textrange.select();
}
/* try to find the doubled testword, without the delimiter */
if (window.find) {
result = window.find(testword + testword);
} else {
try {
textrange = window.self.document.body.createTextRange();
result = textrange.findText(testword + testword);
} catch(e) {
result = false;
}
}
document.body.removeChild(div);
document.body.removeChild(dummy);
return result;
} catch(e) {
return false;
}
}
Modernizr.addTest("csshyphens", function() {
if (!Modernizr.testAllProps('hyphens')) return false;
/* Chrome lies about its hyphens support so we need a more robust test
crbug.com/107111
*/
try {
return test_hyphens_css();
} catch(e) {
return false;
}
});
Modernizr.addTest("softhyphens", function() {
try {
// use numeric entity instead of &shy; in case it's XHTML
return test_hyphens('&#173;', true) && test_hyphens('&#8203;', false);
} catch(e) {
return false;
}
});
Modernizr.addTest("softhyphensfind", function() {
try {
return test_hyphens_find('&#173;') && test_hyphens_find('&#8203;');
} catch(e) {
return false;
}
});
})();

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// last-child pseudo selector
// https://github.com/Modernizr/Modernizr/pull/304
Modernizr.addTest('lastchild', function(){
return Modernizr.testStyles("#modernizr div {width:100px} #modernizr :last-child{width:200px;display:block}", function (elem) {
return elem.lastChild.offsetWidth > elem.firstChild.offsetWidth;
}, 2);
});

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// this tests passes for webkit's proprietary `-webkit-mask` feature
// www.webkit.org/blog/181/css-masks/
// developer.apple.com/library/safari/#documentation/InternetWeb/Conceptual/SafariVisualEffectsProgGuide/Masks/Masks.html
// it does not pass mozilla's implementation of `mask` for SVG
// developer.mozilla.org/en/CSS/mask
// developer.mozilla.org/En/Applying_SVG_effects_to_HTML_content
// Can combine with clippaths for awesomeness: http://generic.cx/for/webkit/test.html
Modernizr.addTest('cssmask', Modernizr.testAllProps('maskRepeat'));

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Modernizr.addTest('mediaqueries', Modernizr.mq('only all'));

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// dev.opera.com/articles/view/css3-object-fit-object-position/
Modernizr.addTest('object-fit',
!!Modernizr.prefixed('objectFit')
);

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// johanbrook.com/browsers/native-momentum-scrolling-ios-5/
// introduced in iOS5b2. Possible API may change...
Modernizr.addTest("overflowscrolling",function(){
return Modernizr.testAllProps("overflowScrolling");
});

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// developer.mozilla.org/en/CSS/pointer-events
// Test and project pages:
// ausi.github.com/Feature-detection-technique-for-pointer-events/
// github.com/ausi/Feature-detection-technique-for-pointer-events/wiki
// github.com/Modernizr/Modernizr/issues/80
Modernizr.addTest('pointerevents', function(){
var element = document.createElement('x'),
documentElement = document.documentElement,
getComputedStyle = window.getComputedStyle,
supports;
if(!('pointerEvents' in element.style)){
return false;
}
element.style.pointerEvents = 'auto';
element.style.pointerEvents = 'x';
documentElement.appendChild(element);
supports = getComputedStyle &&
getComputedStyle(element, '').pointerEvents === 'auto';
documentElement.removeChild(element);
return !!supports;
});

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// Sticky positioning - constrains an element to be positioned inside the
// intersection of its container box, and the viewport.
Modernizr.addTest('csspositionsticky', function () {
var prop = 'position:';
var value = 'sticky';
var el = document.createElement('modernizr');
var mStyle = el.style;
mStyle.cssText = prop + Modernizr._prefixes.join(value + ';' + prop).slice(0, -prop.length);
return mStyle.position.indexOf(value) !== -1;
});

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// CSS Regions
// http://www.w3.org/TR/css3-regions/
// By: Mihai Balan
// We start with a CSS parser test then we check page geometry to see if it's affected by regions
// Later we might be able to retire the second part, as WebKit builds with the false positives die out
Modernizr.addTest('regions', function() {
/* Get the 'flowFrom' property name available in the browser. Either default or vendor prefixed.
If the property name can't be found we'll get Boolean 'false' and fail quickly */
var flowFromProperty = Modernizr.prefixed("flowFrom"),
flowIntoProperty = Modernizr.prefixed("flowInto");
if (!flowFromProperty || !flowIntoProperty){
return false;
}
/* If CSS parsing is there, try to determine if regions actually work. */
var container = document.createElement('div'),
content = document.createElement('div'),
region = document.createElement('div'),
/* we create a random, unlikely to be generated flow number to make sure we don't
clash with anything more vanilla, like 'flow', or 'article', or 'f1' */
flowName = 'modernizr_flow_for_regions_check';
/* First create a div with two adjacent divs inside it. The first will be the
content, the second will be the region. To be able to distinguish between the two,
we'll give the region a particular padding */
content.innerText = 'M';
container.style.cssText = 'top: 150px; left: 150px; padding: 0px;';
region.style.cssText = 'width: 50px; height: 50px; padding: 42px;';
region.style[flowFromProperty] = flowName;
container.appendChild(content);
container.appendChild(region);
document.documentElement.appendChild(container);
/* Now compute the bounding client rect, before and after attempting to flow the
content div in the region div. If regions are enabled, the after bounding rect
should reflect the padding of the region div.*/
var flowedRect, delta,
plainRect = content.getBoundingClientRect();
content.style[flowIntoProperty] = flowName;
flowedRect = content.getBoundingClientRect();
delta = flowedRect.left - plainRect.left;
document.documentElement.removeChild(container);
content = region = container = undefined;
return (delta == 42);
});

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// test by github.com/nsfmc
// "The 'rem' unit ('root em') is relative to the computed
// value of the 'font-size' value of the root element."
// http://www.w3.org/TR/css3-values/#relative0
// you can test by checking if the prop was ditched
// http://snook.ca/archives/html_and_css/font-size-with-rem
Modernizr.addTest('cssremunit', function(){
var div = document.createElement('div');
try {
div.style.fontSize = '3rem';
} catch(er){}
return (/rem/).test(div.style.fontSize);
});

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// Test for CSS 3 UI "resize" property
// http://www.w3.org/TR/css3-ui/#resize
// https://developer.mozilla.org/en/CSS/resize
Modernizr.addTest('cssresize', Modernizr.testAllProps('resize'));

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// Stylable scrollbars detection
Modernizr.addTest('cssscrollbar', function() {
var bool,
styles = "#modernizr{overflow: scroll; width: 40px }#" +
Modernizr._prefixes
.join("scrollbar{width:0px}"+' #modernizr::')
.split('#')
.slice(1)
.join('#') + "scrollbar{width:0px}";
Modernizr.testStyles(styles, function(node) {
bool = 'scrollWidth' in node && node.scrollWidth == 40;
});
return bool;
});

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// http://html.adobe.com/webplatform/layout/shapes
Modernizr.addTest('shapes', Modernizr.testAllProps('shapeOutside', 'content-box', true));

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/*
* Test for SubPixel Font Rendering
* (to infer if GDI or DirectWrite is used on Windows)
* Authors: @derSchepp, @gerritvanaaken, @rodneyrehm, @yatil, @ryanseddon
* Web: https://github.com/gerritvanaaken/subpixeldetect
*/
Modernizr.addTest('subpixelfont', function() {
var bool,
styles = "#modernizr{position: absolute; top: -10em; visibility:hidden; font: normal 10px arial;}#subpixel{float: left; font-size: 33.3333%;}";
// see https://github.com/Modernizr/Modernizr/blob/master/modernizr.js#L97
Modernizr.testStyles(styles, function(elem) {
var subpixel = elem.firstChild;
subpixel.innerHTML = 'This is a text written in Arial';
bool = window.getComputedStyle ?
window.getComputedStyle(subpixel, null).getPropertyValue("width") !== '44px'
: false;
}, 1, ['subpixel']);
return bool;
});

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// http://dev.w3.org/csswg/css3-conditional/#at-supports
// github.com/Modernizr/Modernizr/issues/648
// Relies on the fact that a browser vendor should expose the CSSSupportsRule interface
// http://dev.w3.org/csswg/css3-conditional/#the-csssupportsrule-interface
Modernizr.addTest("supports","CSSSupportsRule" in window);

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// -moz-user-select:none test.
// by ryan seddon
//https://github.com/Modernizr/Modernizr/issues/250
Modernizr.addTest("userselect",function(){
return Modernizr.testAllProps("user-select");
});

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// https://github.com/Modernizr/Modernizr/issues/572
// Similar to http://jsfiddle.net/FWeinb/etnYC/
Modernizr.addTest('cssvhunit', function() {
var bool;
Modernizr.testStyles("#modernizr { height: 50vh; }", function(elem, rule) {
var height = parseInt(window.innerHeight/2,10),
compStyle = parseInt((window.getComputedStyle ?
getComputedStyle(elem, null) :
elem.currentStyle)["height"],10);
bool= (compStyle == height);
});
return bool;
});

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// https://github.com/Modernizr/Modernizr/issues/572
// http://jsfiddle.net/glsee/JDsWQ/4/
Modernizr.addTest('cssvmaxunit', function(){
var bool;
Modernizr.testStyles("#modernizr { width: 50vmax; }", function(elem, rule) {
var one_vw = window.innerWidth/100,
one_vh = window.innerHeight/100,
compWidth = parseInt((window.getComputedStyle ?
getComputedStyle(elem, null) :
elem.currentStyle)['width'],10);
bool = ( parseInt(Math.max(one_vw, one_vh)*50,10) == compWidth );
});
return bool;
});

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// https://github.com/Modernizr/Modernizr/issues/572
// http://jsfiddle.net/glsee/JRmdq/8/
Modernizr.addTest('cssvminunit', function(){
var bool;
Modernizr.testStyles("#modernizr { width: 50vmin; }", function(elem, rule) {
var one_vw = window.innerWidth/100,
one_vh = window.innerHeight/100,
compWidth = parseInt((window.getComputedStyle ?
getComputedStyle(elem, null) :
elem.currentStyle)['width'],10);
bool = ( parseInt(Math.min(one_vw, one_vh)*50,10) == compWidth );
});
return bool;
});

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// https://github.com/Modernizr/Modernizr/issues/572
// http://jsfiddle.net/FWeinb/etnYC/
Modernizr.addTest('cssvwunit', function(){
var bool;
Modernizr.testStyles("#modernizr { width: 50vw; }", function(elem, rule) {
var width = parseInt(window.innerWidth/2,10),
compStyle = parseInt((window.getComputedStyle ?
getComputedStyle(elem, null) :
elem.currentStyle)["width"],10);
bool= (compStyle == width);
});
return bool;
});

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/*
Custom protocol handler support
http://developers.whatwg.org/timers.html#custom-handlers
Added by @benschwarz
*/
Modernizr.addTest('customprotocolhandler', function () {
return !!navigator.registerProtocolHandler;
});

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// Dart
// By Theodoor van Donge
// https://chromiumcodereview.appspot.com/9232049/
Modernizr.addTest('dart', !!Modernizr.prefixed('startDart', navigator));

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// DataView
// https://developer.mozilla.org/en/JavaScript_typed_arrays/DataView
// By Addy Osmani
Modernizr.addTest('dataview', (typeof DataView !== 'undefined' && 'getFloat64' in DataView.prototype));

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// classList
// https://developer.mozilla.org/en/DOM/element.classList
// By Addy Osmani
Modernizr.addTest('classlist', 'classList' in document.documentElement);

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// by james a rosen.
// https://github.com/Modernizr/Modernizr/issues/258
Modernizr.addTest('createelement-attrs', function() {
try {
return document.createElement("<input name='test' />").getAttribute('name') == 'test';
} catch(e) {
return false;
}
});

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// dataset API for data-* attributes
// test by @phiggins42
Modernizr.addTest('dataset', function(){
var n = document.createElement("div");
n.setAttribute("data-a-b", "c");
return !!(n.dataset && n.dataset.aB === "c");
});

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// Microdata support
// http://www.w3.org/TR/html5/microdata.html
// By Addy Osmani
Modernizr.addTest('microdata', !!(document['getItems']));

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// lol. we already have a test for datalist built in! silly you.
// Helpful links while you're here, though..
// http://css-tricks.com/15346-relevant-dropdowns-polyfill-for-datalist/
// http://miketaylr.com/test/datalist.html
// http://miketaylr.com/code/datalist.html
Modernizr.addTest('datalistelem', Modernizr.input.list );

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// By @mathias, based on http://mths.be/axh
Modernizr.addTest('details', function() {
var doc = document,
el = doc.createElement('details'),
fake,
root,
diff;
if (!('open' in el)) { // return early if possible; thanks @aFarkas!
return false;
}
root = doc.body || (function() {
var de = doc.documentElement;
fake = true;
return de.insertBefore(doc.createElement('body'), de.firstElementChild || de.firstChild);
}());
el.innerHTML = '<summary>a</summary>b';
el.style.display = 'block';
root.appendChild(el);
diff = el.offsetHeight;
el.open = true;
diff = diff != el.offsetHeight;
root.removeChild(el);
fake && root.parentNode.removeChild(root);
return diff;
});

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// <output>
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-button-element.html#the-output-element
// by Addy Osmani
Modernizr.addTest('outputelem', 'value' in document.createElement('output'));

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//By Stefan Wallin
//tests for progressbar-support. All browsers that don't support progressbar returns undefined =)
Modernizr.addTest("progressbar",function(){
return document.createElement('progress').max !== undefined;
});
//tests for meter-support. All browsers that don't support meters returns undefined =)
Modernizr.addTest("meter",function(){
return document.createElement('meter').max !== undefined;
});

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// Browser support test for the HTML5 <ruby>, <rt> and <rp> elements
// http://www.whatwg.org/specs/web-apps/current-work/multipage/text-level-semantics.html#the-ruby-element
//
// by @alrra
Modernizr.addTest('ruby', function () {
var ruby = document.createElement('ruby'),
rt = document.createElement('rt'),
rp = document.createElement('rp'),
docElement = document.documentElement,
displayStyleProperty = 'display',
fontSizeStyleProperty = 'fontSize'; // 'fontSize' - because it`s only used for IE6 and IE7
ruby.appendChild(rp);
ruby.appendChild(rt);
docElement.appendChild(ruby);
// browsers that support <ruby> hide the <rp> via "display:none"
if ( getStyle(rp, displayStyleProperty) == 'none' || // for non-IE browsers
// but in IE browsers <rp> has "display:inline" so, the test needs other conditions:
getStyle(ruby, displayStyleProperty) == 'ruby' && getStyle(rt, displayStyleProperty) == 'ruby-text' || // for IE8 & IE9
getStyle(rp, fontSizeStyleProperty) == '6pt' && getStyle(rt, fontSizeStyleProperty) == '6pt' ) { // for IE6 & IE7
cleanUp();
return true;
} else {
cleanUp();
return false;
}
function getStyle( element, styleProperty ) {
var result;
if ( window.getComputedStyle ) { // for non-IE browsers
result = document.defaultView.getComputedStyle(element,null).getPropertyValue(styleProperty);
} else if ( element.currentStyle ) { // for IE
result = element.currentStyle[styleProperty];
}
return result;
}
function cleanUp() {
docElement.removeChild(ruby);
// the removed child node still exists in memory, so ...
ruby = null;
rt = null;
rp = null;
}
});

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// <time> element
// http://www.whatwg.org/specs/web-apps/current-work/multipage/rendering.html#the-time-element-0
// by Addy Osmani
Modernizr.addTest('time', 'valueAsDate' in document.createElement('time'));

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// Track element + Timed Text Track API
// http://www.w3.org/TR/html5/video.html#the-track-element
// http://www.w3.org/TR/html5/media-elements.html#text-track-api
//
// While IE10 has implemented the track element, IE10 does not expose the underlying APIs to create timed text tracks by JS (really sad)
// By Addy Osmani
Modernizr.addTest({
texttrackapi: (typeof (document.createElement('video').addTextTrack) === 'function'),
// a more strict test for track including UI support: document.createElement('track').kind === 'subtitles'
track: ('kind' in document.createElement('track'))
});

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// Requires a Modernizr build with `canvastext` included
// http://www.modernizr.com/download/#-canvas-canvastext
Modernizr.addTest('emoji', function() {
if (!Modernizr.canvastext) return false;
var node = document.createElement('canvas'),
ctx = node.getContext('2d');
ctx.textBaseline = 'top';
ctx.font = '32px Arial';
ctx.fillText('\ud83d\ude03', 0, 0); // "smiling face with open mouth" emoji
return ctx.getImageData(16, 16, 1, 1).data[0] !== 0;
});

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// strict mode
// test by @kangax
Modernizr.addTest('strictmode', function(){
return (function(){ "use strict"; return !this; })();
});

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//By Shi Chuan
//Part of Device Access aspect of HTML5, same category as geolocation
//W3C Editor's Draft at http://dev.w3.org/geo/api/spec-source-orientation.html
//Implementation by iOS Safari at http://goo.gl/fhce3 and http://goo.gl/rLKz8
//test for Device Motion Event support, returns boolean value true/false
Modernizr.addTest('devicemotion', ('DeviceMotionEvent' in window) );
//test for Device Orientation Event support, returns boolean value true/false
Modernizr.addTest('deviceorientation', ('DeviceOrientationEvent' in window) );

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// EXIF Orientation test
// iOS looks at the EXIF Orientation flag in jpgs and rotates the image
// accordingly. Looks like most desktop browsers just ignore this data.
// description: www.impulseadventure.com/photo/exif-orientation.html
// Bug trackers:
// bugzil.la/298619 (unimplemented)
// crbug.com/56845 (looks incomplete)
// webk.it/19688 (available upstream but its up all ports to turn on individually)
//
// detect by Paul Sayre
(function(){
var img = new Image();
img.onerror = function() {
Modernizr.addTest('exif-orientation', function () { return false; });
};
img.onload = function() {
Modernizr.addTest('exif-orientation', function () { return img.width !== 2; });
};
// There may be a way to shrink this more, it's a 1x2 white jpg with the orientation flag set to 6
img.src = "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQEAYABgAAD/4QAiRXhpZgAASUkqAAgAAAABABIBAwABAAAABgASAAAAAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAARCAABAAIDASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD+/iiiigD/2Q==";
})();

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/**
* file tests for the File API specification
* Tests for objects specific to the File API W3C specification without
* being redundant (don't bother testing for Blob since it is assumed
* to be the File object's prototype.
*
* Will fail in Safari 5 due to its lack of support for the standards
* defined FileReader object
*/
Modernizr.addTest('filereader', function () {
return !!(window.File && window.FileList && window.FileReader);
});

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// Filesystem API
// dev.w3.org/2009/dap/file-system/file-dir-sys.html
// The API will be present in Chrome incognito, but will throw an exception.
// See crbug.com/93417
//
// By Eric Bidelman (@ebidel)
Modernizr.addTest('filesystem', !!Modernizr.prefixed('requestFileSystem', window));

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// Detects whether input type="file" is available on the platform
// E.g. iOS < 6 and some android version don't support this
// It's useful if you want to hide the upload feature of your app on devices that
// don't support it (iphone, ipad, etc).
Modernizr.addTest('fileinput', function() {
var elem = document.createElement('input');
elem.type = 'file';
return !elem.disabled;
});

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// Detects whether input form="form_id" is available on the platform
// E.g. IE 10 (and below), don't support this
Modernizr.addTest("formattribute", function() {
var form = document.createElement("form"),
input = document.createElement("input"),
div = document.createElement("div"),
id = "formtest"+(new Date().getTime()),
attr,
bool = false;
form.id = id;
//IE6/7 confuses the form idl attribute and the form content attribute
if(document.createAttribute){
attr = document.createAttribute("form");
attr.nodeValue = id;
input.setAttributeNode(attr);
div.appendChild(form);
div.appendChild(input);
document.documentElement.appendChild(div);
bool = form.elements.length === 1 && input.form == form;
div.parentNode.removeChild(div);
}
return bool;
});

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// input[type="number"] localized input/output
// // Detects whether input type="number" is capable of receiving and
// // displaying localized numbers, e.g. with comma separator
// // https://bugs.webkit.org/show_bug.cgi?id=42484
// // Based on http://trac.webkit.org/browser/trunk/LayoutTests/fast/forms/script-tests/input-number-keyoperation.js?rev=80096#L9
// // By Peter Janes
Modernizr.addTest('localizedNumber', function() {
var doc = document,
el = document.createElement('div'),
fake,
root,
input,
diff;
root = doc.body || (function() {
var de = doc.documentElement;
fake = true;
return de.insertBefore(doc.createElement('body'), de.firstElementChild || de.firstChild);
}());
el.innerHTML = '<input type="number" value="1.0" step="0.1"/>';
input = el.childNodes[0];
root.appendChild(el);
input.focus();
try {
doc.execCommand('InsertText', false, '1,1');
} catch(e) { // prevent warnings in IE
}
diff = input.type === 'number' && input.valueAsNumber === 1.1 && input.checkValidity();
root.removeChild(el);
fake && root.parentNode.removeChild(root);
return diff;
});

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// testing for placeholder attribute in inputs and textareas
// re-using Modernizr.input if available
Modernizr.addTest('placeholder', function(){
return !!( 'placeholder' in ( Modernizr.input || document.createElement('input') ) &&
'placeholder' in ( Modernizr.textarea || document.createElement('textarea') )
);
});

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// speech input for inputs
// by @alrra
// `webkitSpeech` in elem
// doesn`t work correctly in all versions of Chromium based browsers.
// It can return false even if they have support for speech i.imgur.com/2Y40n.png
// Testing with 'onwebkitspeechchange' seems to fix this problem
// this detect only checks the webkit version because
// the speech attribute is likely to be deprecated in favor of a JavaScript API.
// http://lists.w3.org/Archives/Public/public-webapps/2011OctDec/att-1696/speechapi.html
// FIXME: add support for detecting the new spec'd behavior
Modernizr.addTest('speechinput', function(){
var elem = document.createElement('input');
return 'speech' in elem || 'onwebkitspeechchange' in elem;
});

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// This implementation only tests support for interactive form validation.
// To check validation for a specific type or a specific other constraint,
// the test can be combined:
// - Modernizr.inputtypes.numer && Modernizr.formvalidation (browser supports rangeOverflow, typeMismatch etc. for type=number)
// - Modernizr.input.required && Modernizr.formvalidation (browser supports valueMissing)
//
(function(document, Modernizr){
Modernizr.formvalidationapi = false;
Modernizr.formvalidationmessage = false;
Modernizr.addTest('formvalidation', function() {
var form = document.createElement('form');
if ( !('checkValidity' in form) || !('addEventListener' in form) ) {
return false;
}
if ('reportValidity' in form) {
return true;
}
var invalidFired = false;
var input;
Modernizr.formvalidationapi = true;
// Prevent form from being submitted
form.addEventListener('submit', function(e) {
//Opera does not validate form, if submit is prevented
if ( !window.opera ) {
e.preventDefault();
}
e.stopPropagation();
}, false);
// Calling form.submit() doesn't trigger interactive validation,
// use a submit button instead
//older opera browsers need a name attribute
form.innerHTML = '<input name="modTest" required><button></button>';
Modernizr.testStyles('#modernizr form{position:absolute;top:-99999em}', function( node ) {
node.appendChild(form);
input = form.getElementsByTagName('input')[0];
// Record whether "invalid" event is fired
input.addEventListener('invalid', function(e) {
invalidFired = true;
e.preventDefault();
e.stopPropagation();
}, false);
//Opera does not fully support the validationMessage property
Modernizr.formvalidationmessage = !!input.validationMessage;
// Submit form by clicking submit button
form.getElementsByTagName('button')[0].click();
});
return invalidFired;
});
})(document, window.Modernizr);

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Modernizr.addTest('fullscreen',function(){
for(var i = 0; i < Modernizr._domPrefixes.length; i++) {
if( document[Modernizr._domPrefixes[i].toLowerCase() + 'CancelFullScreen'])
return true;
}
return !!document['cancelFullScreen'] || false;
});
// http://developer.apple.com/library/safari/documentation/AudioVideo/Conceptual/Using_HTML5_Audio_Video/ControllingMediaWithJavaScript/ControllingMediaWithJavaScript.html#//apple_ref/doc/uid/TP40009523-CH3-SW20
// https://developer.mozilla.org/en/API/Fullscreen

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// GamePad API
// https://dvcs.w3.org/hg/gamepad/raw-file/default/gamepad.html
// By Eric Bidelman
// FF has Gamepad API support only in special builds, but not in any release (even behind a flag)
// Their current implementation has no way to feature detect, only events to bind to.
// http://www.html5rocks.com/en/tutorials/doodles/gamepad/#toc-featuredetect
// but a patch will bring them up to date with the spec when it lands (and they'll pass this test)
// https://bugzilla.mozilla.org/show_bug.cgi?id=690935
Modernizr.addTest('gamepads', !!Modernizr.prefixed('getGamepads', navigator));

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// getUserMedia
// http://www.whatwg.org/specs/web-apps/current-work/multipage/video-conferencing-and-peer-to-peer-communication.html
// By Eric Bidelman
Modernizr.addTest('getusermedia', !!Modernizr.prefixed('getUserMedia', navigator));

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// IE8 compat mode aka Fake IE7
// by Erich Ocean
// In this case, IE8 will be acting as IE7. You may choose to remove features in this case.
// related:
// james.padolsey.com/javascript/detect-ie-in-js-using-conditional-comments/
Modernizr.addTest('ie8compat',function(){
return (!window.addEventListener && document.documentMode && document.documentMode === 7);
});

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// Test for `sandbox` attribute in iframes.
//
// Spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#attr-iframe-sandbox
Modernizr.addTest('sandbox', 'sandbox' in document.createElement('iframe'));

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// Test for `seamless` attribute in iframes.
//
// Spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#attr-iframe-seamless
Modernizr.addTest('seamless', 'seamless' in document.createElement('iframe'));

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// Test for `srcdoc` attribute in iframes.
//
// Spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-iframe-element.html#attr-iframe-srcdoc
Modernizr.addTest('srcdoc', 'srcdoc' in document.createElement('iframe'));

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// Animated PNG
// http://en.wikipedia.org/wiki/APNG
// By Addy Osmani
(function () {
if (!Modernizr.canvas) return false;
var image = new Image(),
canvas = document.createElement('canvas'),
ctx = canvas.getContext('2d');
image.onload = function () {
Modernizr.addTest('apng', function () {
if (typeof canvas.getContext == 'undefined') {
return false;
} else {
ctx.drawImage(image, 0, 0);
return ctx.getImageData(0, 0, 1, 1).data[3] === 0;
}
});
};
image.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANSURBVAiZY2BgYPgPAAEEAQB9ssjfAAAAGmZjVEwAAAAAAAAAAQAAAAEAAAAAAAAAAAD6A+gBAbNU+2sAAAARZmRBVAAAAAEImWNgYGBgAAAABQAB6MzFdgAAAABJRU5ErkJggg==";
}());

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// code.google.com/speed/webp/
// by rich bradshaw, ryan seddon, and paul irish
// This test is asynchronous. Watch out.
(function(){
var image = new Image();
image.onerror = function() {
Modernizr.addTest('webp', false);
};
image.onload = function() {
Modernizr.addTest('webp', function() { return image.width == 1; });
};
image.src = 'data:image/webp;base64,UklGRiwAAABXRUJQVlA4ICAAAAAUAgCdASoBAAEAL/3+/3+CAB/AAAFzrNsAAP5QAAAAAA==';
}());

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// native JSON support.
// developer.mozilla.org/en/JSON
// this will also succeed if you've loaded the JSON2.js polyfill ahead of time
// ... but that should be obvious. :)
Modernizr.addTest('json', !!window.JSON && !!JSON.parse);

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// impressivewebs.com/reverse-ordered-lists-html5
// polyfill: github.com/impressivewebs/HTML5-Reverse-Ordered-Lists
Modernizr.addTest('olreversed', 'reversed' in document.createElement('ol'));

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// MathML
// http://www.w3.org/Math/
// By Addy Osmani
// Based on work by Davide (@dpvc) and David (@davidcarlisle)
// in https://github.com/mathjax/MathJax/issues/182
Modernizr.addTest('mathml', function(){
var hasMathML = false;
if ( document.createElementNS ) {
var ns = "http://www.w3.org/1998/Math/MathML",
div = document.createElement("div");
div.style.position = "absolute";
var mfrac = div.appendChild(document.createElementNS(ns,"math"))
.appendChild(document.createElementNS(ns,"mfrac"));
mfrac.appendChild(document.createElementNS(ns,"mi"))
.appendChild(document.createTextNode("xx"));
mfrac.appendChild(document.createElementNS(ns,"mi"))
.appendChild(document.createTextNode("yy"));
document.body.appendChild(div);
hasMathML = div.offsetHeight > div.offsetWidth;
}
return hasMathML;
});

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// determining low-bandwidth via navigator.connection
// There are two iterations of the navigator.connection interface:
// The first is present in Android 2.2+ and only in the Browser (not WebView)
// : docs.phonegap.com/en/1.2.0/phonegap_connection_connection.md.html#connection.type
// : davidbcalhoun.com/2010/using-navigator-connection-android
// The second is specced at dev.w3.org/2009/dap/netinfo/ and perhaps landing in WebKit
// : bugs.webkit.org/show_bug.cgi?id=73528
// unknown devices are assumed as fast
// for more rigorous network testing, consider boomerang.js: github.com/bluesmoon/boomerang/
Modernizr.addTest('lowbandwidth', function() {
var connection = navigator.connection || { type: 0 }; // polyfill
return connection.type == 3 || // connection.CELL_2G
connection.type == 4 || // connection.CELL_3G
/^[23]g$/.test(connection.type); // string value in new spec
});

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// server sent events aka eventsource
// dev.w3.org/html5/eventsource/
Modernizr.addTest('eventsource', !!window.EventSource);

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// XML HTTP Request Level 2
// www.w3.org/TR/XMLHttpRequest2/
// Much more details at github.com/Modernizr/Modernizr/issues/385
// all three of these details report consistently across all target browsers:
// !!(window.ProgressEvent);
// !!(window.FormData);
// window.XMLHttpRequest && "withCredentials" in new XMLHttpRequest;
Modernizr.addTest('xhr2', 'FormData' in window);

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// Notifications
// By Theodoor van Donge
// window.webkitNotifications is only used by Chrome
// http://www.html5rocks.com/en/tutorials/notifications/quick/
// window.Notification only exist in the draft specs
// http://dev.w3.org/2006/webapi/WebNotifications/publish/Notifications.html#idl-if-Notification
Modernizr.addTest('notification', 'Notification' in window && 'permission' in window.Notification && 'requestPermission' in window.Notification);

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// Navigation Timing (Performance)
// https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/NavigationTiming/
// http://www.html5rocks.com/en/tutorials/webperformance/basics/
// By Scott Murphy (uxder)
Modernizr.addTest('performance', !!Modernizr.prefixed('performance', window));

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// https://developer.mozilla.org/en-US/docs/API/Pointer_Lock_API
Modernizr.addTest('pointerlock',!!Modernizr.prefixed('pointerLockElement', document));

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// Quota Storage Management API
// This API can be used to check how much quota an origin is using and request more
// Currently only implemented in Chrome.
// https://developers.google.com/chrome/whitepapers/storage
// By Addy Osmani
Modernizr.addTest('quotamanagement', function(){
var storage = Modernizr.prefixed('StorageInfo', window);
return !!(storage && 'TEMPORARY' in storage && 'PERSISTENT' in storage);
});

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// requestAnimationFrame
// Offload animation repainting to browser for optimized performance.
// http://dvcs.w3.org/hg/webperf/raw-file/tip/specs/RequestAnimationFrame/Overview.html
// By Addy Osmani
Modernizr.addTest('raf', !!Modernizr.prefixed('requestAnimationFrame', window));

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// async script
// By Theodoor van Donge
Modernizr.addTest('scriptasync', 'async' in document.createElement('script'));

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// defer script
// By Theodoor van Donge
Modernizr.addTest('scriptdefer', 'defer' in document.createElement('script'));

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// Browser support test for <style scoped>
// http://www.w3.org/TR/html5/the-style-element.html#attr-style-scoped
//
// by @alrra
Modernizr.addTest( 'stylescoped', 'scoped' in document.createElement('style') );

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// Detect support for svg filters - http://www.w3.org/TR/SVG11/filters.html.
// Should fail in Safari: http://stackoverflow.com/questions/9739955/feature-detecting-support-for-svg-filters.
// detect by erik dahlstrom
Modernizr.addTest('svgfilters', function(){
var result = false;
try {
result = typeof SVGFEColorMatrixElement !== undefined &&
SVGFEColorMatrixElement.SVG_FECOLORMATRIX_TYPE_SATURATE == 2;
}
catch(e) {}
return result;
});

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/**
* Unicode special character support
*
* Detection is made by testing missing glyph box rendering against star character
* If widths are the same, this "probably" means the browser didn't support the star character and rendered a glyph box instead
* Just need to ensure the font characters have different widths
*
* Warning : positive Unicode support doesn't mean you can use it inside <title>, this seams more related to OS & Language packs
*/
Modernizr.addTest('unicode', function() {
var bool,
missingGlyph = document.createElement('span'),
star = document.createElement('span');
Modernizr.testStyles('#modernizr{font-family:Arial,sans;font-size:300em;}', function(node) {
missingGlyph.innerHTML = '&#5987';
star.innerHTML = '&#9734';
node.appendChild(missingGlyph);
node.appendChild(star);
bool = 'offsetWidth' in missingGlyph && missingGlyph.offsetWidth !== star.offsetWidth;
});
return bool;
});

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// data uri test.
// https://github.com/Modernizr/Modernizr/issues/14
// This test is asynchronous. Watch out.
// in IE7 in HTTPS this can cause a Mixed Content security popup.
// github.com/Modernizr/Modernizr/issues/362
// To avoid that you can create a new iframe and inject this.. perhaps..
(function(){
var datauri = new Image();
datauri.onerror = function() {
Modernizr.addTest('datauri', function () { return false; });
};
datauri.onload = function() {
Modernizr.addTest('datauri', function () { return (datauri.width == 1 && datauri.height == 1); });
};
datauri.src = "data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==";
})();

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// test if IE userdata supported
// msdn.microsoft.com/en-us/library/ms531424(v=vs.85).aspx
// test by @stereobooster
Modernizr.addTest('userdata', function(){
return !!document.createElement('div').addBehavior;
});

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// Vibration API
// http://www.w3.org/TR/vibration/
// https://developer.mozilla.org/en/DOM/window.navigator.mozVibrate
Modernizr.addTest('vibrate', !!Modernizr.prefixed('vibrate', navigator));

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// Tests for the ability to use Web Intents (http://webintents.org).
// By Eric Bidelman
Modernizr.addTest('webintents', function() {
return !!Modernizr.prefixed('startActivity', navigator);
});

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// Grab the WebGL extensions currently supported and add to the Modernizr.webgl object
// spec: www.khronos.org/registry/webgl/specs/latest/#5.13.14
// based on code from ilmari heikkinen
// code.google.com/p/graphics-detect/source/browse/js/detect.js
(function(){
if (!Modernizr.webgl) return;
var canvas, ctx, exts;
try {
canvas = document.createElement('canvas');
ctx = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
exts = ctx.getSupportedExtensions();
}
catch (e) {
return;
}
if (ctx === undefined) {
Modernizr.webgl = new Boolean(false);
}
else {
Modernizr.webgl = new Boolean(true);
}
for (var i = -1, len = exts.length; ++i < len; ){
Modernizr.webgl[exts[i]] = true;
}
// hack for addressing modernizr testsuite failures. sorry.
if (window.TEST && TEST.audvid){
TEST.audvid.push('webgl');
}
canvas = undefined;
})();

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