modernizr.js | |
|---|---|
| Modernizr v1.6 http://www.modernizr.com | |
| |
| Copyright (c) 2009-2010 Dual-licensed under the BSD or MIT licenses. http://www.modernizr.com/license/ | |
| Modernizr is a script that detects native CSS3 and HTML5 features available in the current UA and provides an object containing all features with a true/false value, depending on whether the UA has native support for it or not. Modernizr will also add classes to the element of the page, one for each feature it detects. 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 your CSS, giving you fine control over the look & feel of your website. | window.Modernizr = (function(window,document,undefined){
var version = '1.6',
ret = {},
docElement = document.documentElement,
docHead = document.head || document.getElementsByTagName('head')[0], |
| Create our "modernizr" element that we do most feature tests on. | mod = 'modernizr',
modElem = document.createElement( mod ),
m_style = modElem.style, |
| Create the input element for various Web Forms feature tests. | inputElem = document.createElement( 'input' ),
smile = ':)',
tostring = Object.prototype.toString,
|
| List of property values to set for css tests. See ticket #21 | prefixes = ' -webkit- -moz- -o- -ms- -khtml- '.split(' '), |
| Following spec is to expose vendor-specific style properties as: elem.style.WebkitBorderRadius and the following would be incorrect: elem.style.webkitBorderRadius | |
| Webkit ghosts their properties in lowercase but Opera & Moz do not.
Microsoft foregoes prefixes entirely <= IE8, but appears to
use a lowercase | |
| More here: http://github.com/Modernizr/Modernizr/issues/issue/21 | domPrefixes = 'Webkit Moz O ms Khtml'.split(' '),
ns = {'svg': 'http://www.w3.org/2000/svg'},
tests = {},
inputs = {},
attrs = {},
classes = [],
featurename, // used in testing loop
|
| todo: consider using http://javascript.nwbox.com/CSSSupport/css-support.js instead | testMediaQuery = function(mq){
var st = document.createElement('style'),
div = document.createElement('div'),
ret;
st.textContent = mq + '{#modernizr{height:3px}}';
docHead.appendChild(st);
div.id = 'modernizr';
docElement.appendChild(div);
ret = div.offsetHeight === 3;
st.parentNode.removeChild(st);
div.parentNode.removeChild(div);
return !!ret;
},
|
| isEventSupported determines if a given element supports the given event function from http://yura.thinkweb2.com/isEventSupported/ | isEventSupported = (function(){
var TAGNAMES = {
'select':'input','change':'input',
'submit':'form','reset':'form',
'error':'img','load':'img','abort':'img'
};
function isEventSupported(eventName, element) {
element = element || document.createElement(TAGNAMES[eventName] || 'div');
eventName = 'on' + eventName; |
| When using | var isSupported = (eventName in element);
if (!isSupported) { |
| If it has no | 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 | if (!is(element[eventName], undefined)) {
element[eventName] = undefined;
}
element.removeAttribute(eventName);
}
}
element = null;
return isSupported;
}
return isEventSupported;
})();
|
| hasOwnProperty shim by kangax needed for Safari 2.0 support | var _hasOwnProperty = ({}).hasOwnProperty, hasOwnProperty;
if (!is(_hasOwnProperty, undefined) && !is(_hasOwnProperty.call, undefined)) {
hasOwnProperty = function (object, property) {
return _hasOwnProperty.call(object, property);
};
}
else {
hasOwnProperty = function (object, property) { // yes, this can give false positives/negatives, but most of the time we don't care about those //
return ((property in object) && is(object.constructor.prototype[property], undefined));
};
}
|
| set_css applies given styles to the Modernizr DOM node. | function set_css( str ) {
m_style.cssText = str;
} |
| setcssall extrapolates all vendor-specific css strings. | function set_css_all( str1, str2 ) {
return set_css(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 ) !== -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], modElem ) ) ) {
return true;
}
}
} |
| 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 test_props_all( prop, callback ) {
var uc_prop = prop.charAt(0).toUpperCase() + prop.substr(1),
props = (prop + ' ' + domPrefixes.join(uc_prop + ' ') + uc_prop).split(' ');
return !!test_props( props, callback );
}
|
Tests | tests['flexbox'] = function() { |
| setprefixedvalue_css sets the property of a specified element adding vendor prefixes to the VALUE of the property. | |
function set_prefixed_value_css(element, property, value, extra) {
property += ':';
element.style.cssText = (property + prefixes.join(value + ';' + property)).slice(0, -property.length) + (extra || '');
} | |
| setprefixedproperty_css sets the property of a specified element adding vendor prefixes to the NAME of the property. | |
function set_prefixed_property_css(element, property, value, extra) {
element.style.cssText = prefixes.join(property + ':' + value + ';') + (extra || '');
}
var c = document.createElement('div'),
elem = document.createElement('div');
set_prefixed_value_css(c, 'display', 'box', 'width:42px;padding:0;');
set_prefixed_property_css(elem, 'box-flex', '1', 'width:10px;');
c.appendChild(elem);
docElement.appendChild(c);
var ret = elem.offsetWidth === 42;
c.removeChild(elem);
docElement.removeChild(c);
return ret;
};
| |
| On the S60 and BB Storm, getContext exists, but always returns undefined http://github.com/Modernizr/Modernizr/issues/issue/97/ |
tests['canvas'] = function() {
var elem = document.createElement( 'canvas' );
return !!(elem.getContext && elem.getContext('2d'));
};
tests['canvastext'] = function() {
return !!(ret['canvas'] && is(document.createElement( 'canvas' ).getContext('2d').fillText, 'function'));
};
tests['webgl'] = function(){
var elem = document.createElement( 'canvas' );
try {
if (elem.getContext('webgl')){ return true; }
} catch(e){ }
try {
if (elem.getContext('experimental-webgl')){ 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. Additionally, Chrome (desktop) used to lie about its support on this, but that has since been rectified: http://crbug.com/36415 We also test for Firefox 4 Multitouch Support. | |
| For more info, see: http://modernizr.github.com/Modernizr/touch.html |
tests['touch'] = function() {
return ('ontouchstart' in window) || testMediaQuery('@media ('+prefixes.join('touch-enabled),(')+'modernizr)');
}; |
| geolocation tests for the new Geolocation API specification. This test is a standards compliant-only test; for more complete testing, including a Google Gears fallback, please see: http://code.google.com/p/geo-location-javascript/ or view a fallback solution using google's geo API: http://gist.github.com/366184 | tests['geolocation'] = function() {
return !!navigator.geolocation;
}; |
| Per 1.6: This used to be Modernizr.crosswindowmessaging but the longer name has been deprecated in favor of a shorter and property-matching one. The old API is still available in 1.6, but as of 2.0 will throw a warning, and in the first release thereafter disappear entirely. | tests['postmessage'] = function() {
return !!window.postMessage;
}; |
| Web SQL database detection is tricky: | |
| In chrome incognito mode, openDatabase is truthy, but using it will throw an exception: http://crbug.com/42380 We can create a dummy database, but there is no way to delete it afterwards. | |
| Meanwhile, Safari users can get prompted on any database creation. If they do, any page with Modernizr will give them a prompt: http://github.com/Modernizr/Modernizr/issues/closed#issue/113 | |
| We have chosen to allow the Chrome incognito false positive, so that Modernizr doesn't litter the web with these test databases. As a developer, you'll have to account for this gotcha yourself. | tests['websqldatabase'] = function() {
var result = !!window.openDatabase;
/* if (result){
try {
result = !!openDatabase( mod + "testdb", "1.0", mod + "testdb", 2e4);
} catch(e) {
}
} */
return result;
};
|
| Vendors have inconsistent prefixing with the experimental Indexed DB: | |
| Firefox is shipping indexedDB in FF4 as moz_indexedDB * Webkit's implementation is accessible through webkitIndexedDB | |
| We test both styles. | tests['indexedDB'] = function(){
for (var i = -1, len = domPrefixes.length; ++i < len; ){
var prefix = domPrefixes[i].toLowerCase();
if (window[prefix + '_indexedDB'] || window[prefix + 'IndexedDB']){
return true;
}
}
return false;
}; |
| documentMode logic from YUI to filter out IE8 Compat Mode which false positives. | tests['hashchange'] = function() {
return isEventSupported('hashchange', window) && ( document.documentMode === undefined || document.documentMode > 7 );
}; |
| Per 1.6: This used to be Modernizr.historymanagement but the longer name has been deprecated in favor of a shorter and property-matching one. The old API is still available in 1.6, but as of 2.0 will throw a warning, and in the first release thereafter disappear entirely. | tests['history'] = function() {
return !!(window.history && history.pushState);
};
tests['draganddrop'] = function() {
return isEventSupported('dragstart') && isEventSupported('drop');
};
tests['websockets'] = 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, except IE9 who retains it as hsla |
set_css('background-color:hsla(120,40%,100%,.5)' );
return contains( m_style.backgroundColor, 'rgba' ) || contains( m_style.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! |
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 new RegExp("(url\\s*\\(.*?){3}").test(m_style.background);
};
|
| In testing support for a given CSS property, it's legit to test:
| |
| We'll take advantage of this quick test and skip setting a style on our modernizr element, but instead just testing undefined vs empty string. |
tests['backgroundsize'] = function() {
return test_props_all( 'backgroundSize' );
};
tests['borderimage'] = function() {
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() {
return test_props_all( 'borderRadius', '', function( prop ) {
return contains( prop, 'orderRadius' );
});
};
|
| WebOS unfortunately false positives on this test. | tests['boxshadow'] = function() {
return test_props_all( '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. |
set_css_all( 'opacity:.55' );
|
| The non-literal . in this regex is intentional: German Chrome returns this value as 0,55 https://github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632 | return /^0.55$/.test(m_style.opacity);
};
tests['cssanimations'] = function() {
return test_props_all( 'animationName' );
};
tests['csscolumns'] = function() {
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 + prefixes.join(str2 + str1) + prefixes.join(str3 + str1)).slice(0,-str1.length)
);
return contains( m_style.backgroundImage, 'gradient' );
};
tests['cssreflections'] = function() {
return test_props_all( 'boxReflect' );
};
tests['csstransforms'] = function() {
return !!test_props([ 'transformProperty', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform' ]);
};
tests['csstransforms3d'] = function() {
var ret = !!test_props([ 'perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective' ]);
|
| Webkit’s 3D transforms are passed off to the browser's own graphics renderer. It works fine in Safari on Leopard and Snow Leopard, but not in Chrome in some conditions. As a result, Webkit typically recognizes the syntax but will sometimes throw a false positive, thus we must do a more thorough check: | if (ret && 'webkitPerspective' in docElement.style){
|
| Webkit allows this media query to succeed only if the feature is enabled. | ret = testMediaQuery('@media ('+prefixes.join('transform-3d),(')+'modernizr)');
}
return ret;
};
tests['csstransitions'] = function() {
return test_props_all( 'transitionProperty' );
}; |
| @font-face detection routine by Diego Perini http://javascript.nwbox.com/CSSSupport/ | tests['fontface'] = function(){
var
sheet, bool,
head = docHead || docElement,
style = document.createElement("style"),
impl = document.implementation || { hasFeature: function() { return false; } };
style.type = 'text/css';
head.insertBefore(style, head.firstChild);
sheet = style.sheet || style.styleSheet;
var supportAtRule = impl.hasFeature('CSS2', '') ?
function(rule) {
if (!(sheet && rule)) return false;
var result = false;
try {
sheet.insertRule(rule, 0);
result = !(/unknown/i).test(sheet.cssRules[0].cssText);
sheet.deleteRule(sheet.cssRules.length - 1);
} catch(e) { }
return result;
} :
function(rule) {
if (!(sheet && rule)) return false;
sheet.cssText = rule;
return sheet.cssText.length !== 0 && !(/unknown/i).test(sheet.cssText) &&
sheet.cssText
.replace(/\r+|\n+/g, '')
.indexOf(rule.split(' ')[0]) === 0;
};
bool = supportAtRule('@font-face { font-family: "font"; src: "font.ttf"; }');
head.removeChild(style);
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 : http://github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845 thx to NielsLeenheer and zcorpan | |
| Note: in FF 3.5.1 and 3.5.0, "no" was a return value instead of empty string. Modernizr does not normalize for that. |
tests['video'] = function() {
var elem = document.createElement('video'),
bool = !!elem.canPlayType;
if (bool){
bool = new Boolean(bool);
bool.ogg = elem.canPlayType('video/ogg; codecs="theora"');
|
| Workaround required for IE9, which doesn't report video support without audio codec specified. bug 599718 @ msft connect | var h264 = 'video/mp4; codecs="avc1.42E01E';
bool.h264 = elem.canPlayType(h264 + '"') || elem.canPlayType(h264 + ', mp4a.40.2"');
bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"');
}
return bool;
};
tests['audio'] = function() {
var elem = document.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/Mediaformatssupportedbytheaudioandvideoelements http://bit.ly/iphoneoscodecs | bool.wav = elem.canPlayType('audio/wav; codecs="1"');
bool.m4a = elem.canPlayType('audio/x-m4a;') || elem.canPlayType('audio/aac;');
}
return bool;
}; |
| Firefox has made these tests rather unfun. | |
| In FF4, if disabled, window.localStorage should === null. | |
| Normally, we could not test that directly and need to do a
| |
| However, in Firefox 4 betas, if dom.storage.enabled == false, just mentioning the property will throw an exception. http://bugzil.la/599479 This looks to be fixed for FF4 Final. | |
| Because we are forced to try/catch this, we'll go aggressive. | |
| FWIW: IE8 Compat mode supports these features completely: http://www.quirksmode.org/dom/html5.html But IE8 doesn't support either with local files | tests['localstorage'] = function() {
try {
return !!localStorage.getItem;
} catch(e) {
return false;
}
};
tests['sessionstorage'] = function() {
try {
return !!sessionStorage.getItem;
} catch(e){
return false;
}
};
tests['webWorkers'] = function () {
return !!window.Worker;
};
tests['applicationcache'] = function() {
return !!window.applicationCache;
};
|
| Thanks to Erik Dahlstrom | tests['svg'] = function(){
return !!document.createElementNS && !!document.createElementNS(ns.svg, "svg").createSVGRect;
};
tests['inlinesvg'] = function() {
var div = document.createElement('div');
div.innerHTML = '<svg/>';
return (div.firstChild && div.firstChild.namespaceURI) == ns.svg;
}; |
| Thanks to F1lt3r and lucideer http://github.com/Modernizr/Modernizr/issues#issue/35 | tests['smil'] = function(){
return !!document.createElementNS && /SVG/.test(tostring.call(document.createElementNS(ns.svg,'animate')));
};
tests['svgclippaths'] = function(){ |
| Possibly returns a false positive in Safari 3.2? | return !!document.createElementNS && /SVG/.test(tostring.call(document.createElementNS(ns.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 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 inputElem);
}
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 | |
| Big thanks to @miketaylr for the html5 forms expertise. http://miketaylr.com/ | ret['inputtypes'] = (function(props) {
for (var i = 0, bool, len=props.length ; i < len ; i++) {
inputElem.setAttribute('type', props[i]);
bool = inputElem.type !== 'text';
|
| Chrome likes to falsely purport support, so we feed it a textual value; if that doesnt succeed then we know there's a custom UI | if (bool){
inputElem.value = smile;
if (/^range$/.test(inputElem.type) && inputElem.style.WebkitAppearance !== undefined){
docElement.appendChild(inputElem);
var 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)$/.test(inputElem.type)){ |
| Spec doesnt define any special parsing or detectable UI behaviors so we pass these through as true | |
| Interestingly, opera fails the earlier test, so it doesn't even make it here. |
} else if (/^(url|email)$/.test(inputElem.type)) { |
| 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(' '));
} |
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 ( hasOwnProperty( 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();
ret[ featurename ] = tests[ feature ]();
classes.push( ( ret[ featurename ] ? '' : 'no-' ) + featurename );
}
}
|
| input tests need to run. | if (!ret.input) webforms();
|
| Per 1.6: deprecated API is still accesible for now: | ret.crosswindowmessaging = ret.postmessage;
ret.historymanagement = ret.history; |
| 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) {
feature = feature.toLowerCase();
if (ret[ feature ]) {
return; // quit if you're trying to overwrite an existing test
}
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( '' );
modElem = f = null; |
| Enable HTML 5 elements for styling in IE. fyi: jscript version does not reflect trident version therefore ie9 in ie7 mode will still have a jScript v.9 | if ( enableHTML5 && window.attachEvent && (function(){ var elem = document.createElement("div");
elem.innerHTML = "<elem></elem>";
return elem.childNodes.length !== 1; })()) { |
| iepp v1.6.2 by @jon_neal : code.google.com/p/ie-print-protector | (function(win, doc) {
var elems = 'abbr|article|aside|audio|canvas|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video',
elemsArr = elems.split('|'),
elemsArrLen = elemsArr.length,
elemRegExp = new RegExp('(^|\\s)('+elems+')', 'gi'),
tagRegExp = new RegExp('<(\//)('+elems+')', 'gi'),
ruleRegExp = new RegExp('(^|[^\\n]*?\\s)('+elems+')([^\\n]*)({[\\n\\w\\W]*?})', 'gi'),
docFrag = doc.createDocumentFragment(),
html = doc.documentElement,
head = html.firstChild,
bodyElem = doc.createElement('body'),
styleElem = doc.createElement('style'),
body;
function shim(doc) {
var a = -1;
while (++a < elemsArrLen) |
| Use createElement so IE allows HTML5-named elements in a document | doc.createElement(elemsArr[a]);
}
function getCSS(styleSheetList, mediaType) {
var a = -1,
len = styleSheetList.length,
styleSheet,
cssTextArr = [];
while (++a < len) {
styleSheet = styleSheetList[a]; |
| Get css from all non-screen stylesheets and their imports | if ((mediaType = styleSheet.media || mediaType) != 'screen') cssTextArr.push(getCSS(styleSheet.imports, mediaType), styleSheet.cssText);
}
return cssTextArr.join('');
} |
| Shim the document and iepp fragment | shim(doc);
shim(docFrag); |
| Add iepp custom print style element | head.insertBefore(styleElem, head.firstChild);
styleElem.media = 'print';
win.attachEvent(
'onbeforeprint',
function() {
var a = -1,
cssText = getCSS(doc.styleSheets, 'all'),
cssTextArr = [],
rule;
body = body || doc.body; |
| Get only rules which reference HTML5 elements by name | while ((rule = ruleRegExp.exec(cssText)) != null) |
| Replace all html5 element references with iepp substitute classnames | cssTextArr.push((rule[1]+rule[2]+rule[3]).replace(elemRegExp, '$1.iepp_$2')+rule[4]); |
| Write iepp custom print CSS | styleElem.styleSheet.cssText = cssTextArr.join('\n');
while (++a < elemsArrLen) {
var nodeList = doc.getElementsByTagName(elemsArr[a]),
nodeListLen = nodeList.length,
b = -1;
while (++b < nodeListLen)
if (nodeList[b].className.indexOf('iepp_') < 0) |
| Append iepp substitute classnames to all html5 elements | nodeList[b].className += ' iepp_'+elemsArr[a];
}
docFrag.appendChild(body);
html.appendChild(bodyElem); |
| Write iepp substitute print-safe document | bodyElem.className = body.className; |
| Replace HTML5 elements with which is print-safe and shouldn't conflict since it isn't part of html5 | bodyElem.innerHTML = body.innerHTML.replace(tagRegExp, '<$1font');
}
);
win.attachEvent(
'onafterprint',
function() { |
| Undo everything done in onbeforeprint | bodyElem.innerHTML = '';
html.removeChild(bodyElem);
html.appendChild(body);
styleElem.styleSheet.cssText = '';
}
);
})(window, document);
} |
| Assign private properties to the return object with prefix | ret._enableHTML5 = enableHTML5;
ret._version = version; |
| Remove "no-js" class from element, if it exists: | docElement.className=docElement.className.replace(/\bno-js\b/,'') + ' js'; |
| Add the new classes to the element. | docElement.className += ' ' + classes.join( ' ' );
return ret;
})(this,this.document);
|