forked from Modernizr/Modernizr
/
modernizr.js
767 lines (602 loc) · 31 KB
/
modernizr.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
/*!
* Modernizr JavaScript library 1.2pre
* http://modernizr.com/
*
* Copyright (c) 2009-2010 Faruk Ates - http://farukat.es/
* Licensed under the MIT license.
* http://modernizr.com/license/
*
* Featuring major contributions by
* Paul Irish - http://paulirish.com
*/
/*
* Modernizr is a script that will detect native CSS3 and HTML5 features
* available in the current UA and provide an object containing all
* features with a true/false value, depending on whether the UA has
* native support for it or not.
*
* In addition to that, Modernizr will add classes to the <html>
* element of the page, one for each cutting-edge feature. If the UA
* supports it, a class like "cssgradients" will be added. If not,
* the class name will be "no-cssgradients". This allows for simple
* if-conditionals in CSS styling, making it easily to have fine
* control over the look and feel of your website.
*
* @author Faruk Ates
* @copyright (2009-2010) Faruk Ates.
*
* @contributor Paul Irish
* @contributor Ben Alman
*/
window.Modernizr = (function(window,doc,undefined){
var version = '1.2pre',
ret = {},
/**
* enableHTML5 is a private property for advanced use only. If enabled,
* it will make Modernizr.init() run through a brief while() loop in
* which it will create all HTML5 elements in the DOM to allow for
* styling them in Internet Explorer, which does not recognize any
* non-HTML4 elements unless created in the DOM this way.
*
* enableHTML5 is ON by default.
*/
enableHTML5 = true,
/**
* fontfaceCheckDelay is the ms delay before the @font-face test is
* checked a second time. This is neccessary because both Gecko and
* WebKit do not load data: URI font data synchronously.
* https://bugzilla.mozilla.org/show_bug.cgi?id=512566
* The check will be done again at fontfaceCheckDelay*2 and then
* a fourth time at window's load event.
* If you need to query for @font-face support, send a callback to:
* Modernizr._fontfaceready(fn);
* The callback is passed the boolean value of Modernizr.fontface
*/
fontfaceCheckDelay = 75,
docElement = doc.documentElement,
/**
* Create our "modernizr" element that we do most feature tests on.
*/
mod = 'modernizr'
m = doc.createElement( mod ),
m_style = m.style,
/**
* Create the input element for various Web Forms feature tests.
*/
f = doc.createElement( 'input' ),
// Reused strings.
canvas = 'canvas',
canvastext = 'canvastext',
webgl = 'webgl',
rgba = 'rgba',
hsla = 'hsla',
multiplebgs = 'multiplebgs',
borderimage = 'borderimage',
borderradius = 'borderradius',
boxshadow = 'boxshadow',
opacity = 'opacity',
cssanimations = 'cssanimations',
csscolumns = 'csscolumns',
cssgradients = 'cssgradients',
cssreflections = 'cssreflections',
csstransforms = 'csstransforms',
csstransforms3d = 'csstransforms3d',
csstransitions = 'csstransitions',
fontface = 'fontface',
geolocation = 'geolocation',
video = 'video',
audio = 'audio',
input = 'input',
inputtypes = input + 'types',
// inputtypes is an object of its own containing individual tests for
// various new input types, such as search, range, datetime, etc.
svg = 'svg',
smil = 'smil',
svgclippaths = svg+'clippaths',
background = 'background',
backgroundColor = background + 'Color',
canPlayType = 'canPlayType',
// FF gets really angry if you name local variables as these, but camelCased.
localstorage = 'localStorage',
sessionstorage = 'sessionStorage',
applicationcache = 'applicationCache',
webWorkers = 'webworkers',
hashchange = 'hashchange',
crosswindowmessaging = 'crosswindowmessaging',
historymanagement = 'historymanagement',
draganddrop = 'draganddrop',
websqldatabase = 'websqldatabase',
websocket = 'websocket',
flash = 'flash',
smile = ':)',
touch = 'touch',
toString = Object.prototype.toString,
// list of property values to set for css tests. see ticket #21
setProperties = ' -o- -moz- -ms- -webkit- -khtml- '.split(' '),
tests = {},
inputs = {},
attrs = {},
classes = [],
/**
* 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'
},
cache = { };
function isEventSupported(eventName, element) {
var canCache = (arguments.length == 1);
// only return cached result when no element is given
if (canCache && cache[eventName]) {
return cache[eventName];
}
element = element || document.createElement(TAGNAMES[eventName] || 'div');
eventName = 'on' + eventName;
// When using `setAttribute`, IE skips "unload", WebKit skips "unload" and "resize"
// `in` "catches" those
var isSupported = (eventName in element);
if (!isSupported && element.setAttribute) {
element.setAttribute(eventName, 'return;');
isSupported = typeof element[eventName] == 'function';
}
element = null;
return canCache ? (cache[eventName] = isSupported) : isSupported;
}
return isEventSupported;
})();
/**
* set_css applies given styles to the Modernizr DOM node.
*/
function set_css( str ) {
m_style.cssText = str;
}
/**
* set_css_all extrapolates all vendor-specific css strings.
*/
function set_css_all( str1, str2 ) {
return set_css(setProperties.join(str1 + ';') + ( str2 || '' ));
}
/**
* contains returns a boolean for if substr is found within str.
*/
function contains( str, substr ) {
return (''+str).indexOf( substr ) !== -1;
}
/**
* test_props 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 test_props( props, callback ) {
for ( var i in props ) {
if ( m_style[ props[i] ] !== undefined && ( !callback || callback( props[i] ) ) ) {
return true;
}
}
}
/**
* test_props_all 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 test_props_all( prop, callback ) {
var uc_prop = prop.charAt(0).toUpperCase() + prop.substr(1),
props = [
prop,
'Webkit' + uc_prop,
'Moz' + uc_prop,
'O' + uc_prop,
'ms' + uc_prop,
'Khtml' + uc_prop
];
return !!test_props( props, callback );
}
// Tests
/**
* Canvas tests in Modernizr 1.x are still somewhat rudimentary. However,
* the added "canvastext" test allows for a slightly more reliable and
* usable setup.
*/
tests[canvas] = function() {
return !!doc.createElement( canvas ).getContext;
};
tests[canvastext] = function() {
return !!(tests[canvas]() && typeof doc.createElement( canvas ).getContext('2d').fillText == 'function');
};
tests[webgl] = function(){
var elem = doc.createElement( canvas ),
contexts = [webgl, "ms-"+webgl, "experimental-"+webgl, "moz-"+webgl, "opera-3d", "webkit-3d", "ms-3d", "3d"];
for (var b = -1, len = contexts.length; ++b < len; ) {
try {
if (elem.getContext(contexts[b])) return true;
} catch(e){ }
}
return false;
};
/**
* 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.
*/
tests[touch] = function() {
return !!('ontouchstart' in window);
};
/**
* 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/
*/
tests[geolocation] = function() {
return !!navigator.geolocation;
};
tests[crosswindowmessaging] = function() {
return !!window.postMessage;
};
tests[websqldatabase] = function() {
return !!window.openDatabase;
};
// 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 );
};
tests[historymanagement] = function() {
return !!(window.history && history.pushState && history.popState);
};
tests[draganddrop] = function() {
return isEventSupported('drag')
&& isEventSupported('dragstart')
&& isEventSupported('dragenter')
&& isEventSupported('dragover')
&& isEventSupported('dragleave')
&& isEventSupported('dragend')
&& isEventSupported('drop');
};
tests[websocket] = function(){
return ('WebSocket' in window);
};
// http://css-tricks.com/rgba-browser-support/
tests[rgba] = function() {
// Set an rgba() color and check the returned value
set_css( background + '-color:rgba(150,255,150,.5)' );
return contains( m_style[backgroundColor], rgba );
};
tests[hsla] = function() {
// Same as rgba(), in fact, browsers re-map hsla() to rgba() internally
set_css( background + '-color:hsla(120,40%,100%,.5)' );
return contains( m_style[backgroundColor], rgba );
};
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!
set_css( 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 elem_style.background
return /(url\s*\(.*?){3}/.test(m_style[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.
// The legacy set_css_all calls will remain in the source
// (however, commented) in for clarity, yet functionally they are
// no longer needed.
tests[borderimage] = function() {
// set_css_all( 'border-image:url(m.png) 1 1 stretch' );
return test_props_all( 'borderImage' );
};
// super comprehensive table about all the unique implementations of
// border-radius: http://muddledramblings.com/table-of-css3-border-radius-compliance
tests[borderradius] = function() {
// set_css_all( 'border-radius:10px' );
return test_props_all( 'borderRadius', '', function( prop ) {
return contains( prop, 'orderRadius' );
});
};
tests[boxshadow] = function() {
// set_css_all( 'box-shadow:#000 1px 1px 3px' );
return test_props_all( 'boxShadow' );
};
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.
set_css_all( 'opacity:.5' );
return contains( m_style[opacity], '0.5' );
};
tests[cssanimations] = function() {
// set_css_all( 'animation:"animate" 2s ease 2', 'position:relative' );
return test_props_all( 'animationName' );
};
tests[csscolumns] = function() {
// set_css_all( 'column-count:3' );
return test_props_all( '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);';
set_css(
(str1 + setProperties.join(str2 + str1) + setProperties.join(str3 + str1)).slice(0,-str1.length)
);
return contains( m_style.backgroundImage, 'gradient' );
};
tests[cssreflections] = function() {
// set_css_all( 'box-reflect:right 1px' );
return test_props_all( 'boxReflect' );
};
tests[csstransforms] = function() {
// set_css_all( 'transform:rotate(3deg)' );
return !!test_props([ 'transformProperty', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform' ]);
};
tests[csstransforms3d] = function() {
// set_css_all( 'perspective:500' );
var ret = !!test_props([ 'perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective' ]);
// webkit has 3d transforms disabled for chrome and safari, though
// it works fine in webkit nightly on (snow) leopard.
// as a result, it 'recognizes' the syntax and throws a false positive
// thus we must do a more thorough check:
if (ret){
var st = document.createElement('style'),
div = doc.createElement('div');
// 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){#modernizr{height:3px}}"
st.textContent = '@media ('+setProperties.join('transform-3d),(')+'modernizr){#modernizr{height:3px}}';
doc.getElementsByTagName('head')[0].appendChild(st);
div.id = 'modernizr';
docElement.appendChild(div);
ret = div.offsetHeight === 3;
st.parentNode.removeChild(st);
div.parentNode.removeChild(div);
}
return ret;
};
tests[csstransitions] = function() {
// set_css_all( 'transition:all .5s linear' );
return test_props_all( 'transitionProperty' );
};
// @font-face detection routine created by Paul Irish - paulirish.com
// Merged into Modernizr with approval. Read more about Paul's work here:
// http://paulirish.com/2009/font-face-feature-detection/
tests[fontface] = function(){
var fontret;
if (!(!/*@cc_on@if(@_jscript_version>=5)!@end@*/0)) fontret = true;
else {
// Create variables for dedicated @font-face test
var st = doc.createElement('style'),
spn = doc.createElement('span'),
size, isFakeBody = false, body = doc.body,
callback, isCallbackCalled;
// The following is a font-face + glyph definition for the . character:
st.textContent = "@font-face{font-family:testfont;src:url('data:font/ttf;base64,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')}";
doc.getElementsByTagName('head')[0].appendChild(st);
// we don't use `serif` and we don't use `monospace`
// http://github.com/Modernizr/Modernizr/issues/closed#issue/39
// http://neugierig.org/software/chromium/notes/2009/09/monospace-fonts-workaround.html
spn.setAttribute('style','font:99px _,arial,helvetica;position:absolute;visibility:hidden');
if (!body){
body = docElement.appendChild(doc.createElement(fontface));
isFakeBody = true;
}
// the data-uri'd font only has the . glyph; which is 3 pixels wide.
spn.innerHTML = '........';
spn.id = 'fonttest';
body.appendChild(spn);
size = spn.offsetWidth*spn.offsetHeight;
spn.style.font = '99px testfont,_,arial,helvetica';
// needed for the CSSFontFaceRule false positives (ff3, chrome, op9)
fontret = size !== spn.offsetWidth*spn.offsetHeight;
function delayedCheck(){
if (!body.parentNode) return;
fontret = ret[fontface] = size !== spn.offsetWidth*spn.offsetHeight;
docElement.className = docElement.className.replace(/(no-)?font.*?\b/,'') + (fontret ? ' ' : ' no-') + fontface;
}
setTimeout(delayedCheck,fontfaceCheckDelay);
setTimeout(delayedCheck,fontfaceCheckDelay*2);
addEventListener('load',function(){
delayedCheck();
callback && (isCallbackCalled = true) && callback(fontret);
setTimeout(function(){
if (!isFakeBody) body = spn;
body.parentNode.removeChild(body);
st.parentNode.removeChild(st);
}, 50);
},false);
}
// allow for a callback
ret._fontfaceready = function(fn){
(isCallbackCalled || fontret) ? fn(fontret) : (callback = fn);
}
return fontret || size !== spn.offsetWidth;
};
// 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://www.w3.org/TR/html5/video.html#the-source-element
// http://www.ietf.org/rfc/rfc4281.txt
tests[video] = function() {
var elem = doc.createElement(video),
bool = !!elem[canPlayType];
if (bool){
bool = new Boolean(bool);
bool.ogg = elem[canPlayType]('video/ogg; codecs="theora, vorbis"');
bool.h264 = elem[canPlayType]('video/mp4; codecs="avc1.42E01E, mp4a.40.2"');
}
return bool;
};
tests[audio] = function() {
var elem = doc.createElement(audio),
bool = !!elem[canPlayType];
if (bool){
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://developer.apple.com/safari/library/documentation/appleapplications/reference/SafariWebContent/CreatingContentforSafarioniPhone/CreatingContentforSafarioniPhone.html#//apple_ref/doc/uid/TP40006482-SW7
bool.wav = elem[canPlayType]('audio/wav; codecs="1"');
bool.m4a = elem[canPlayType]('audio/x-m4a;') || elem[canPlayType]('audio/aac;');
}
return bool;
};
// both localStorage and sessionStorage are
// tested in this method because otherwise Firefox will
// throw an error: https://bugzilla.mozilla.org/show_bug.cgi?id=365772
// if cookies are disabled
// FWIW miller device resolves to [object Storage] in all supporting browsers
// except for IE who does [object Object]
// IE8 Compat mode supports these features completely:
// http://www.quirksmode.org/dom/html5.html
tests[localstorage] = function() {
return ('localStorage' in window) && window[localstorage] !== null;
};
tests[sessionstorage] = function() {
// try/catch required for pissy FF behavior
try {
return ('sessionStorage' in window) && window[sessionstorage] !== null;
} catch(e){
return false;
}
};
tests[webWorkers] = function () {
return !!window.Worker;
};
tests[applicationcache] = function() {
var cache = window[applicationcache];
return !!(cache && (typeof cache.status != 'undefined') && (typeof cache.update == 'function') && (typeof cache.swapCache == 'function'));
};
// technique courtesy of Jonathan Neal
// in my testing if plugins are disabled this plugins entry isn't availble, so no need to check
// navigator.mimeTypes['application/x-shockwave-flash'].enabledPlugin
tests[flash] = function(){
var bool;
try {
bool = !!navigator.plugins['Shockwave Flash'] || !!(new ActiveXObject('ShockwaveFlash.ShockwaveFlash'));
}
catch(e) {
bool = false;
}
// mark pilgrims excellent test for flashblockers is asynchronous and rather large.
// it's not included now but we hope to add it later, somehow.
// http://code.google.com/p/flashblockdetector/
return bool;
};
// thanks to Erik Dahlstrom
tests[svg] = function(){
return doc.createElementNS && doc.createElementNS( "http://www.w3.org/2000/svg", "svg").createSVGRect;
//return (window.SVGAngle || doc.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure", "1.1"));
};
// thanks to F1lt3r and lucideer
// http://github.com/Modernizr/Modernizr/issues#issue/35
tests[smil] = function(){
return doc.createElementNS && /SVG/.test(toString.call(doc.createElementNS('http://www.w3.org/2000/svg','animate')));
};
tests[svgclippaths] = function(){
// returns a false positive in saf 3.2?
return doc.createElementNS && /SVG/.test(toString.call(doc.createElementNS('http://www.w3.org/2000/svg','clipPath')));
};
// 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(){
// 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:
// http://miketaylr.com/code/input-type-attr.html
// spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
ret[input] = (function(props) {
for (var i = 0,len=props.length;i<len;i++) {
attrs[ props[i] ] = !!(props[i] in f);
}
return attrs;
})('autocomplete autofocus list placeholder max min multiple pattern required step'.split(' '));
// 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
ret[inputtypes] = (function(props) {
for (var i = 0,bool,len=props.length;i<len;i++) {
f.setAttribute('type', props[i]);
bool = f.type !== 'text';
// chrome likes to claim support here so we feed it a textual value
// if that doesnt succeed then we know there's a custom UI
// TODO: not sure how we deal with search, tel, url here..
if (bool){
f.value = smile;
bool = f.value != smile;
}
inputs[ props[i] ] = bool;
}
return inputs;
})('search tel url email datetime date month week time datetime-local number range color'.split(' '));
}
// end of tests.
// 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 ( tests.hasOwnProperty( feature ) ) {
// run the test, then based on the boolean, define an appropriate className
classes.push( ( !( ret[ feature ] = tests[ feature ]() ) ? 'no-' : '' ) + feature );
}
}
// input tests need to run.
if (!ret[input]) 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
*/
ret.addTest = function (feature, test) {
if (ret[ feature ]) {
return; // quit if you're trying to overwrite an existing test
}
feature = feature.toLowerCase();
test = !!(test());
docElement.className += ' ' + (!test ? 'no-' : '') + feature;
ret[ feature ] = test;
return ret; // allow chaining.
};
/**
* Reset m.style.cssText to nothing to reduce memory footprint.
*/
set_css( '' );
m = f = null;
// Enable HTML 5 elements for styling in IE.
if ( enableHTML5 && !(!/*@cc_on@if(@_jscript_version<9)!@end@*/0) ) {
// iepp v1.5.1 MIT @jon_neal http://code.google.com/p/ie-print-protector/
(function(p,e){function q(a,b){if(g[a])g[a].styleSheet.cssText+=b;else{var c=r[l],d=e[j]("style");d.media=a;c.insertBefore(d,c[l]);g[a]=d;q(a,b)}}function s(a,b){for(var c=new RegExp("\\b("+m+")\\b(?!.*[;}])","gi"),d=function(k){return".iepp_"+k},h=-1;++h<a.length;){b=a[h].media||b;s(a[h].imports,b);q(b,a[h].cssText.replace(c,d))}}function t(){for(var a,b=e.getElementsByTagName("*"),c,d,h=new RegExp("^"+m+"$","i"),k=-1;++k<b.length;)if((a=b[k])&&(d=a.nodeName.match(h))){c=new RegExp("^\\s*<"+d+"(.*)\\/"+d+">\\s*$","i");i.innerHTML=a.outerHTML.replace(/\r|\n/g," ").replace(c,a.currentStyle.display=="block"?"<div$1/div>":"<span$1/span>");c=i.childNodes[0];c.className+=" iepp_"+d;c=f[f.length]=[a,c];a.parentNode.replaceChild(c[1],c[0])}s(e.styleSheets,"all")}function u(){for(var a=-1,b;++a<f.length;)f[a][1].parentNode.replaceChild(f[a][0],f[a][1]);for(b in g)r[l].removeChild(g[b]);g={};f=[]}for(var r=e.documentElement,i=e.createDocumentFragment(),g={},m="abbr|article|aside|audio|canvas|command|datalist|details|figure|figcaption|footer|header|hgroup|keygen|mark|meter|nav|output|progress|section|source|summary|time|video",n=m.split("|"),f=[],o=-1,l="firstChild",j="createElement";++o<n.length;){e[j](n[o]);i[j](n[o])}i=i.appendChild(e[j]("div"));p.attachEvent("onbeforeprint",t);p.attachEvent("onafterprint",u)})(this,doc);
}
// Assign private properties to the return object with prefix
ret._enableHTML5 = enableHTML5;
ret._version = version;
// Remove "no-js" class from <html> element, if it exists:
docElement.className=docElement.className.replace(/\bno-js\b/,'js');
// Add the new classes to the <html> element.
docElement.className += ' ' + classes.join( ' ' );
return ret;
})(this,this.document);