2 * @preserve HTML5 Shiv 3.7.2 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed
4 ;(function(window, document) {
10 var options = window.html5 || {};
12 /** Used to skip problem elements */
13 var reSkip = /^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i;
15 /** Not all elements can be cloned in IE **/
16 var saveClones = /^(?:a|b|code|div|fieldset|h1|h2|h3|h4|h5|h6|i|label|li|ol|p|q|span|strong|style|table|tbody|td|th|tr|ul)$/i;
18 /** Detect whether the browser supports default html5 styles */
19 var supportsHtml5Styles;
21 /** Name of the expando, to work with multiple documents or to re-shiv one document */
22 var expando = '_html5shiv';
24 /** The id for the the documents expando */
27 /** Cached data for each document */
30 /** Detect whether the browser supports unknown elements */
31 var supportsUnknownElements;
35 var a = document.createElement('a');
36 a.innerHTML = '<xyz></xyz>';
37 //if the hidden property is implemented we can assume, that the browser supports basic HTML5 Styles
38 supportsHtml5Styles = ('hidden' in a);
40 supportsUnknownElements = a.childNodes.length == 1 || (function() {
41 // assign a false positive if unable to shiv
42 (document.createElement)('a');
43 var frag = document.createDocumentFragment();
45 typeof frag.cloneNode == 'undefined' ||
46 typeof frag.createDocumentFragment == 'undefined' ||
47 typeof frag.createElement == 'undefined'
51 // assign a false positive if detection fails => unable to shiv
52 supportsHtml5Styles = true;
53 supportsUnknownElements = true;
58 /*--------------------------------------------------------------------------*/
61 * Creates a style sheet with the given CSS text and adds it to the document.
63 * @param {Document} ownerDocument The document.
64 * @param {String} cssText The CSS text.
65 * @returns {StyleSheet} The style element.
67 function addStyleSheet(ownerDocument, cssText) {
68 var p = ownerDocument.createElement('p'),
69 parent = ownerDocument.getElementsByTagName('head')[0] || ownerDocument.documentElement;
71 p.innerHTML = 'x<style>' + cssText + '</style>';
72 return parent.insertBefore(p.lastChild, parent.firstChild);
76 * Returns the value of `html5.elements` as an array.
78 * @returns {Array} An array of shived element node names.
80 function getElements() {
81 var elements = html5.elements;
82 return typeof elements == 'string' ? elements.split(' ') : elements;
86 * Extends the built-in list of html5 elements
88 * @param {String|Array} newElements whitespace separated list or array of new element names to shiv
89 * @param {Document} ownerDocument The context document.
91 function addElements(newElements, ownerDocument) {
92 var elements = html5.elements;
93 if(typeof elements != 'string'){
94 elements = elements.join(' ');
96 if(typeof newElements != 'string'){
97 newElements = newElements.join(' ');
99 html5.elements = elements +' '+ newElements;
100 shivDocument(ownerDocument);
104 * Returns the data associated to the given document
106 * @param {Document} ownerDocument The document.
107 * @returns {Object} An object of data.
109 function getExpandoData(ownerDocument) {
110 var data = expandoData[ownerDocument[expando]];
114 ownerDocument[expando] = expanID;
115 expandoData[expanID] = data;
121 * returns a shived element for the given nodeName and document
123 * @param {String} nodeName name of the element
124 * @param {Document} ownerDocument The context document.
125 * @returns {Object} The shived element.
127 function createElement(nodeName, ownerDocument, data){
128 if (!ownerDocument) {
129 ownerDocument = document;
131 if(supportsUnknownElements){
132 return ownerDocument.createElement(nodeName);
135 data = getExpandoData(ownerDocument);
139 if (data.cache[nodeName]) {
140 node = data.cache[nodeName].cloneNode();
141 } else if (saveClones.test(nodeName)) {
142 node = (data.cache[nodeName] = data.createElem(nodeName)).cloneNode();
144 node = data.createElem(nodeName);
147 // Avoid adding some elements to fragments in IE < 9 because
148 // * Attributes like `name` or `type` cannot be set/changed once an element
149 // is inserted into a document/fragment
150 // * Link elements with `src` attributes that are inaccessible, as with
151 // a 403 response, will cause the tab/window to crash
152 // * Script elements appended to fragments will execute when their `src`
153 // or `text` property is set
154 return node.canHaveChildren && !reSkip.test(nodeName) && !node.tagUrn ? data.frag.appendChild(node) : node;
158 * returns a shived DocumentFragment for the given document
160 * @param {Document} ownerDocument The context document.
161 * @returns {Object} The shived DocumentFragment.
163 function createDocumentFragment(ownerDocument, data){
164 if (!ownerDocument) {
165 ownerDocument = document;
167 if(supportsUnknownElements){
168 return ownerDocument.createDocumentFragment();
170 data = data || getExpandoData(ownerDocument);
171 var clone = data.frag.cloneNode(),
173 elems = getElements(),
176 clone.createElement(elems[i]);
182 * Shivs the `createElement` and `createDocumentFragment` methods of the document.
184 * @param {Document|DocumentFragment} ownerDocument The document.
185 * @param {Object} data of the document.
187 function shivMethods(ownerDocument, data) {
190 data.createElem = ownerDocument.createElement;
191 data.createFrag = ownerDocument.createDocumentFragment;
192 data.frag = data.createFrag();
196 ownerDocument.createElement = function(nodeName) {
198 if (!html5.shivMethods) {
199 return data.createElem(nodeName);
201 return createElement(nodeName, ownerDocument, data);
204 ownerDocument.createDocumentFragment = Function('h,f', 'return function(){' +
205 'var n=f.cloneNode(),c=n.createElement;' +
207 // unroll the `createElement` calls
208 getElements().join().replace(/[\w\-:]+/g, function(nodeName) {
209 data.createElem(nodeName);
210 data.frag.createElement(nodeName);
211 return 'c("' + nodeName + '")';
217 /*--------------------------------------------------------------------------*/
220 * Shivs the given document.
222 * @param {Document} ownerDocument The document to shiv.
223 * @returns {Document} The shived document.
225 function shivDocument(ownerDocument) {
226 if (!ownerDocument) {
227 ownerDocument = document;
229 var data = getExpandoData(ownerDocument);
231 if (html5.shivCSS && !supportsHtml5Styles && !data.hasCSS) {
232 data.hasCSS = !!addStyleSheet(ownerDocument,
233 // corrects block display not defined in IE6/7/8/9
234 'article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}' +
235 // adds styling not present in IE6/7/8/9
236 'mark{background:#FF0;color:#000}' +
237 // hides non-rendered elements
238 'template{display:none}'
241 if (!supportsUnknownElements) {
242 shivMethods(ownerDocument, data);
244 return ownerDocument;
247 /*--------------------------------------------------------------------------*/
250 * The `html5` object is exposed so that more elements can be shived and
251 * existing shiving can be detected on iframes.
255 * // options can be changed before the script is included
256 * html5 = { 'elements': 'mark section', 'shivCSS': false, 'shivMethods': false };
261 * An array or space separated string of node names of the elements to shiv.
265 'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details dialog figcaption figure footer header hgroup main mark meter nav output picture progress section summary template time video',
268 * current version of html5shiv
273 * A flag to indicate that the HTML5 style sheet should be inserted.
277 'shivCSS': (options.shivCSS !== false),
280 * Is equal to true if a browser supports creating unknown/HTML5 elements
284 'supportsUnknownElements': supportsUnknownElements,
287 * A flag to indicate that the document's `createElement` and `createDocumentFragment`
288 * methods should be overwritten.
292 'shivMethods': (options.shivMethods !== false),
295 * A string to describe the type of `html5` object ("default" or "default print").
301 // shivs the document according to the specified `html5` object options
302 'shivDocument': shivDocument,
304 //creates a shived element
305 createElement: createElement,
307 //creates a shived documentFragment
308 createDocumentFragment: createDocumentFragment,
310 //extends list of elements
311 addElements: addElements
314 /*--------------------------------------------------------------------------*/
317 window.html5 = html5;
320 shivDocument(document);