/*! * modernizr v3.13.0 * Build https://modernizr.com/download?-audio-bloburls-boxshadow-boxsizing-canvas-cookies-cssanimations-csscalc-csstransforms-csstransforms3d-csstransitions-datauri-fetch-filereader-filesystem-flexbox-fullscreen-geolocation-hashchange-history-indexeddb-json-localstorage-notification-performance-placeholder-pointerevents-promises-queryselector-scriptasync-scriptdefer-serviceworker-sessionstorage-stylescoped-svg-templatestrings-touchevents-typedarrays-video-webgl-webp-webpalpha-websockets-websqldatabase-xhr2-dontmin * * Copyright (c) * Faruk Ates * Paul Irish * Alex Sexton * Ryan Seddon * Patrick Kettner * Stu Cox * Richard Herrera * Veeck * MIT License */ /* * Modernizr tests which native CSS3 and HTML5 features are available in the * current UA and makes the results available to you in two ways: as properties on * a global `Modernizr` object, and as classes on the `` element. This * information allows you to progressively enhance your pages with a granular level * of control over the experience. */ ;(function(scriptGlobalObject, window, document, undefined){ var tests = []; /** * ModernizrProto is the constructor for Modernizr * * @class * @access public */ var ModernizrProto = { _version: '3.13.0', // Any settings that don't work as separate modules // can go in here as configuration. _config: { 'classPrefix': '', 'enableClasses': false, 'enableJSClass': true, 'usePrefixes': true }, // Queue of tests _q: [], // Stub these for people who are listening on: function(test, cb) { // I don't really think people should do this, but we can // safe guard it a bit. // -- NOTE:: this gets WAY overridden in src/addTest for actual async tests. // This is in case people listen to synchronous tests. I would leave it out, // but the code to *disallow* sync tests in the real version of this // function is actually larger than this. var self = this; setTimeout(function() { cb(self[test]); }, 0); }, addTest: function(name, fn, options) { tests.push({name: name, fn: fn, options: options}); }, addAsyncTest: function(fn) { tests.push({name: null, fn: fn}); } }; // Fake some of Object.create so we can force non test results to be non "own" properties. var Modernizr = function() {}; Modernizr.prototype = ModernizrProto; // Leak modernizr globally when you `require` it rather than force it here. // Overwrite name so constructor name is nicer :D Modernizr = new Modernizr(); var classes = []; /** * is returns a boolean if the typeof an obj is exactly type. * * @access private * @function is * @param {*} obj - A thing we want to check the type of * @param {string} type - A string to compare the typeof against * @returns {boolean} true if the typeof the first parameter is exactly the specified type, false otherwise */ function is(obj, type) { return typeof obj === type; } ; /** * Run through all tests and detect their support in the current UA. * * @access private * @returns {void} */ function testRunner() { var featureNames; var feature; var aliasIdx; var result; var nameIdx; var featureName; var featureNameSplit; for (var featureIdx in tests) { if (tests.hasOwnProperty(featureIdx)) { featureNames = []; feature = tests[featureIdx]; // 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. // // If there is no name, it's an 'async' test that is run, // but not directly added to the object. That should // be done with a post-run addTest call. if (feature.name) { featureNames.push(feature.name.toLowerCase()); if (feature.options && feature.options.aliases && feature.options.aliases.length) { // Add all the aliases into the names list for (aliasIdx = 0; aliasIdx < feature.options.aliases.length; aliasIdx++) { featureNames.push(feature.options.aliases[aliasIdx].toLowerCase()); } } } // Run the test, or use the raw value if it's not a function result = is(feature.fn, 'function') ? feature.fn() : feature.fn; // Set each of the names on the Modernizr object for (nameIdx = 0; nameIdx < featureNames.length; nameIdx++) { featureName = featureNames[nameIdx]; // Support dot properties as sub tests. We don't do checking to make sure // that the implied parent tests have been added. You must call them in // order (either in the test, or make the parent test a dependency). // // Cap it to TWO to make the logic simple and because who needs that kind of subtesting // hashtag famous last words featureNameSplit = featureName.split('.'); if (featureNameSplit.length === 1) { Modernizr[featureNameSplit[0]] = result; } else { // cast to a Boolean, if not one already or if it doesnt exist yet (like inputtypes) if (!Modernizr[featureNameSplit[0]] || Modernizr[featureNameSplit[0]] && !(Modernizr[featureNameSplit[0]] instanceof Boolean)) { Modernizr[featureNameSplit[0]] = new Boolean(Modernizr[featureNameSplit[0]]); } Modernizr[featureNameSplit[0]][featureNameSplit[1]] = result; } classes.push((result ? '' : 'no-') + featureNameSplit.join('-')); } } } } ; /** * docElement is a convenience wrapper to grab the root element of the document * * @access private * @returns {HTMLElement|SVGElement} The root element of the document */ var docElement = document.documentElement; /** * A convenience helper to check if the document we are running in is an SVG document * * @access private * @returns {boolean} */ var isSVG = docElement.nodeName.toLowerCase() === 'svg'; /** * createElement is a convenience wrapper around document.createElement. Since we * use createElement all over the place, this allows for (slightly) smaller code * as well as abstracting away issues with creating elements in contexts other than * HTML documents (e.g. SVG documents). * * @access private * @function createElement * @returns {HTMLElement|SVGElement} An HTML or SVG element */ function createElement() { if (typeof document.createElement !== 'function') { // This is the case in IE7, where the type of createElement is "object". // For this reason, we cannot call apply() as Object is not a Function. return document.createElement(arguments[0]); } else if (isSVG) { return document.createElementNS.call(document, 'http://www.w3.org/2000/svg', arguments[0]); } else { return document.createElement.apply(document, arguments); } } ; /*! { "name": "HTML5 Audio Element", "property": "audio", "caniuse": "audio", "tags": ["html5", "audio", "media"], "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements" }] } !*/ /* DOC Detects support of the audio element, as well as testing what types of content it supports. Subproperties are provided to describe support for `ogg`, `mp3`,`opus`, `wav` and `m4a` formats, e.g.: ```javascript Modernizr.audio // true Modernizr.audio.ogg // 'probably' ``` */ // Codec values from : github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845 // thx to NielsLeenheer and zcorpan // Note: in some older browsers, "no" was a return value instead of empty string. // It was live in FF3.5.0 and 3.5.1, but fixed in 3.5.2 // It was also live in Safari 4.0.0 - 4.0.4, but fixed in 4.0.5 (function() { var elem = createElement('audio'); Modernizr.addTest('audio', function() { var bool = false; try { bool = !!elem.canPlayType; if (bool) { bool = new Boolean(bool); } } catch (e) {} return bool; }); // IE9 Running on Windows Server SKU can cause an exception to be thrown, bug #224 try { if (!!elem.canPlayType) { Modernizr.addTest('audio.ogg', elem.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, '')); Modernizr.addTest('audio.mp3', elem.canPlayType('audio/mpeg; codecs="mp3"').replace(/^no$/, '')); Modernizr.addTest('audio.opus', elem.canPlayType('audio/ogg; codecs="opus"') || elem.canPlayType('audio/webm; codecs="opus"').replace(/^no$/, '')); Modernizr.addTest('audio.wav', elem.canPlayType('audio/wav; codecs="1"').replace(/^no$/, '')); Modernizr.addTest('audio.m4a', (elem.canPlayType('audio/x-m4a;') || elem.canPlayType('audio/aac;')).replace(/^no$/, '')); } } catch (e) {} })(); /*! { "name": "Canvas", "property": "canvas", "caniuse": "canvas", "tags": ["canvas", "graphics"], "polyfills": ["flashcanvas", "excanvas", "slcanvas", "fxcanvas"] } !*/ /* DOC Detects support for the `` element for 2D drawing. */ // On the S60 and BB Storm, getContext exists, but always returns undefined // so we actually have to call getContext() to verify // github.com/Modernizr/Modernizr/issues/issue/97/ Modernizr.addTest('canvas', function() { var elem = createElement('canvas'); return !!(elem.getContext && elem.getContext('2d')); }); /*! { "name": "Cookies", "property": "cookies", "tags": ["storage"], "authors": ["tauren"] } !*/ /* DOC Detects whether cookie support is enabled. */ // https://github.com/Modernizr/Modernizr/issues/191 Modernizr.addTest('cookies', function() { // navigator.cookieEnabled cannot detect custom or nuanced cookie blocking // configurations. For example, when blocking cookies via the Advanced // Privacy Settings in IE9, it always returns true. And there have been // issues in the past with site-specific exceptions. // Don't rely on it. // try..catch because some in situations `document.cookie` is exposed but throws a // SecurityError if you try to access it; e.g. documents created from data URIs // or in sandboxed iframes (depending on flags/context) try { // 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; } catch (e) { return false; } }); /** * If the browsers follow the spec, then they would expose vendor-specific styles as: * elem.style.WebkitBorderRadius * instead of something like the following (which is technically incorrect): * elem.style.webkitBorderRadius * * WebKit ghosts their properties in lowercase but Opera & Moz do not. * Microsoft uses a lowercase `ms` instead of the correct `Ms` in IE8+ * erik.eae.net/archives/2008/03/10/21.48.10/ * * More here: github.com/Modernizr/Modernizr/issues/issue/21 * * @access private * @returns {string} The string representing the vendor-specific style properties */ var omPrefixes = 'Moz O ms Webkit'; var cssomPrefixes = (ModernizrProto._config.usePrefixes ? omPrefixes.split(' ') : []); ModernizrProto._cssomPrefixes = cssomPrefixes; /** * contains checks to see if a string contains another string * * @access private * @function contains * @param {string} str - The string we want to check for substrings * @param {string} substr - The substring we want to search the first string for * @returns {boolean} true if and only if the first string 'str' contains the second string 'substr' */ function contains(str, substr) { return !!~('' + str).indexOf(substr); } ; /** * Create our "modernizr" element that we do most feature tests on. * * @access private */ var modElem = { elem: createElement('modernizr') }; // Clean up this element Modernizr._q.push(function() { delete modElem.elem; }); var mStyle = { style: modElem.elem.style }; // kill ref for gc, must happen before mod.elem is removed, so we unshift on to // the front of the queue. Modernizr._q.unshift(function() { delete mStyle.style; }); /** * getBody returns the body of a document, or an element that can stand in for * the body if a real body does not exist * * @access private * @function getBody * @returns {HTMLElement|SVGElement} Returns the real body of a document, or an * artificially created element that stands in for the body */ function getBody() { // After page load injecting a fake body doesn't work so check if body exists var body = document.body; if (!body) { // Can't use the real body create a fake one. body = createElement(isSVG ? 'svg' : 'body'); body.fake = true; } return body; } ; /** * injectElementWithStyles injects an element with style element and some CSS rules * * @access private * @function injectElementWithStyles * @param {string} rule - String representing a css rule * @param {Function} callback - A function that is used to test the injected element * @param {number} [nodes] - An integer representing the number of additional nodes you want injected * @param {string[]} [testnames] - An array of strings that are used as ids for the additional nodes * @returns {boolean} the result of the specified callback test */ function injectElementWithStyles(rule, callback, nodes, testnames) { var mod = 'modernizr'; var style; var ret; var node; var docOverflow; var div = createElement('div'); var body = getBody(); if (parseInt(nodes, 10)) { // In order not to give false positives we create a node for each test // This also allows the method to scale for unspecified uses while (nodes--) { node = createElement('div'); node.id = testnames ? testnames[nodes] : mod + (nodes + 1); div.appendChild(node); } } style = createElement('style'); style.type = 'text/css'; style.id = 's' + mod; // IE6 will false positive on some tests due to the style element inside the test div somehow interfering offsetHeight, so insert it into body or fakebody. // Opera will act all quirky when injecting elements in documentElement when page is served as xml, needs fakebody too. #270 (!body.fake ? div : body).appendChild(style); body.appendChild(div); if (style.styleSheet) { style.styleSheet.cssText = rule; } else { style.appendChild(document.createTextNode(rule)); } div.id = mod; if (body.fake) { //avoid crashing IE8, if background image is used body.style.background = ''; //Safari 5.13/5.1.4 OSX stops loading if ::-webkit-scrollbar is used and scrollbars are visible body.style.overflow = 'hidden'; docOverflow = docElement.style.overflow; docElement.style.overflow = 'hidden'; docElement.appendChild(body); } ret = callback(div, rule); // If this is done after page load we don't want to remove the body so check if body exists if (body.fake && body.parentNode) { body.parentNode.removeChild(body); docElement.style.overflow = docOverflow; // Trigger layout so kinetic scrolling isn't disabled in iOS6+ // eslint-disable-next-line docElement.offsetHeight; } else { div.parentNode.removeChild(div); } return !!ret; } ; /** * domToCSS takes a camelCase string and converts it to hyphen-case * e.g. boxSizing -> box-sizing * * @access private * @function domToCSS * @param {string} name - String name of camelCase prop we want to convert * @returns {string} The hyphen-case version of the supplied name */ function domToCSS(name) { return name.replace(/([A-Z])/g, function(str, m1) { return '-' + m1.toLowerCase(); }).replace(/^ms-/, '-ms-'); } ; /** * wrapper around getComputedStyle, to fix issues with Firefox returning null when * called inside of a hidden iframe * * @access private * @function computedStyle * @param {HTMLElement|SVGElement} elem - The element we want to find the computed styles of * @param {string|null} [pseudo] - An optional pseudo element selector (e.g. :before), of null if none * @param {string} prop - A CSS property * @returns {CSSStyleDeclaration} the value of the specified CSS property */ function computedStyle(elem, pseudo, prop) { var result; if ('getComputedStyle' in window) { result = getComputedStyle.call(window, elem, pseudo); var console = window.console; if (result !== null) { if (prop) { result = result.getPropertyValue(prop); } } else { if (console) { var method = console.error ? 'error' : 'log'; console[method].call(console, 'getComputedStyle returning null, its possible modernizr test results are inaccurate'); } } } else { result = !pseudo && elem.currentStyle && elem.currentStyle[prop]; } return result; } ; /** * nativeTestProps allows for us to use native feature detection functionality if available. * some prefixed form, or false, in the case of an unsupported rule * * @access private * @function nativeTestProps * @param {Array} props - An array of property names * @param {string} value - A string representing the value we want to check via @supports * @returns {boolean|undefined} A boolean when @supports exists, undefined otherwise */ // Accepts a list of property names and a single value // Returns `undefined` if native detection not available function nativeTestProps(props, value) { var i = props.length; // Start with the JS API: https://www.w3.org/TR/css3-conditional/#the-css-interface if ('CSS' in window && 'supports' in window.CSS) { // Try every prefixed variant of the property while (i--) { if (window.CSS.supports(domToCSS(props[i]), value)) { return true; } } return false; } // Otherwise fall back to at-rule (for Opera 12.x) else if ('CSSSupportsRule' in window) { // Build a condition string for every prefixed variant var conditionText = []; while (i--) { conditionText.push('(' + domToCSS(props[i]) + ':' + value + ')'); } conditionText = conditionText.join(' or '); return injectElementWithStyles('@supports (' + conditionText + ') { #modernizr { position: absolute; } }', function(node) { return computedStyle(node, null, 'position') === 'absolute'; }); } return undefined; } ; /** * cssToDOM takes a hyphen-case string and converts it to camelCase * e.g. box-sizing -> boxSizing * * @access private * @function cssToDOM * @param {string} name - String name of hyphen-case prop we want to convert * @returns {string} The camelCase version of the supplied name */ function cssToDOM(name) { return name.replace(/([a-z])-([a-z])/g, function(str, m1, m2) { return m1 + m2.toUpperCase(); }).replace(/^-/, ''); } ; // testProps is a generic CSS / DOM property test. // In testing support for a given CSS property, it's legit to test: // `elem.style[styleName] !== undefined` // If the property is supported it will return an empty string, // if unsupported it will return undefined. // We'll take advantage of this quick test and skip setting a style // on our modernizr element, but instead just testing undefined vs // empty string. // Property names can be provided in either camelCase or hyphen-case. function testProps(props, prefixed, value, skipValueTest) { skipValueTest = is(skipValueTest, 'undefined') ? false : skipValueTest; // Try native detect first if (!is(value, 'undefined')) { var result = nativeTestProps(props, value); if (!is(result, 'undefined')) { return result; } } // Otherwise do it properly var afterInit, i, propsLength, prop, before; // If we don't have a style element, that means we're running async or after // the core tests, so we'll need to create our own elements to use. // Inside of an SVG element, in certain browsers, the `style` element is only // defined for valid tags. Therefore, if `modernizr` does not have one, we // fall back to a less used element and hope for the best. // For strict XHTML browsers the hardly used samp element is used. var elems = ['modernizr', 'tspan', 'samp']; while (!mStyle.style && elems.length) { afterInit = true; mStyle.modElem = createElement(elems.shift()); mStyle.style = mStyle.modElem.style; } // Delete the objects if we created them. function cleanElems() { if (afterInit) { delete mStyle.style; delete mStyle.modElem; } } propsLength = props.length; for (i = 0; i < propsLength; i++) { prop = props[i]; before = mStyle.style[prop]; if (contains(prop, '-')) { prop = cssToDOM(prop); } if (mStyle.style[prop] !== undefined) { // If value to test has been passed in, do a set-and-check test. // 0 (integer) is a valid property value, so check that `value` isn't // undefined, rather than just checking it's truthy. if (!skipValueTest && !is(value, 'undefined')) { // Needs a try catch block because of old IE. This is slow, but will // be avoided in most cases because `skipValueTest` will be used. try { mStyle.style[prop] = value; } catch (e) {} // If the property value has changed, we assume the value used is // supported. If `value` is empty string, it'll fail here (because // it hasn't changed), which matches how browsers have implemented // CSS.supports() if (mStyle.style[prop] !== before) { cleanElems(); return prefixed === 'pfx' ? prop : true; } } // Otherwise just return true, or the property name if this is a // `prefixed()` call else { cleanElems(); return prefixed === 'pfx' ? prop : true; } } } cleanElems(); return false; } ; /** * List of JavaScript DOM values used for tests * * @memberOf Modernizr * @name Modernizr._domPrefixes * @optionName Modernizr._domPrefixes * @optionProp domPrefixes * @access public * @example * * Modernizr._domPrefixes is exactly the same as [_prefixes](#modernizr-_prefixes), but rather * than hyphen-case properties, all properties are their Capitalized variant * * ```js * Modernizr._domPrefixes === [ "Moz", "O", "ms", "Webkit" ]; * ``` */ var domPrefixes = (ModernizrProto._config.usePrefixes ? omPrefixes.toLowerCase().split(' ') : []); ModernizrProto._domPrefixes = domPrefixes; /** * fnBind is a super small [bind](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind) polyfill. * * @access private * @function fnBind * @param {Function} fn - a function you want to change `this` reference to * @param {object} that - the `this` you want to call the function with * @returns {Function} The wrapped version of the supplied function */ function fnBind(fn, that) { return function() { return fn.apply(that, arguments); }; } ; /** * testDOMProps is a generic DOM property test; if a browser supports * a certain property, it won't return undefined for it. * * @access private * @function testDOMProps * @param {Array} props - An array of properties to test for * @param {object} obj - An object or Element you want to use to test the parameters again * @param {boolean|object} elem - An Element to bind the property lookup again. Use `false` to prevent the check * @returns {boolean|*} returns `false` if the prop is unsupported, otherwise the value that is supported */ function testDOMProps(props, obj, elem) { var item; for (var i in props) { if (props[i] in obj) { // return the property name as a string if (elem === false) { return props[i]; } item = obj[props[i]]; // let's bind a function if (is(item, 'function')) { // bind to obj unless overridden return fnBind(item, elem || obj); } // return the unbound function or obj or value return item; } } return false; } ; /** * 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. * * @access private * @function testPropsAll * @param {string} prop - A string of the property to test for * @param {string|object} [prefixed] - An object to check the prefixed properties on. Use a string to skip * @param {HTMLElement|SVGElement} [elem] - An element used to test the property and value against * @param {string} [value] - A string of a css value * @param {boolean} [skipValueTest] - An boolean representing if you want to test if value sticks when set * @returns {string|boolean} returns the string version of the property, or `false` if it is unsupported */ function testPropsAll(prop, prefixed, elem, value, skipValueTest) { var ucProp = prop.charAt(0).toUpperCase() + prop.slice(1), props = (prop + ' ' + cssomPrefixes.join(ucProp + ' ') + ucProp).split(' '); // did they call .prefixed('boxSizing') or are we just testing a prop? if (is(prefixed, 'string') || is(prefixed, 'undefined')) { return testProps(props, prefixed, value, skipValueTest); // otherwise, they called .prefixed('requestAnimationFrame', window[, elem]) } else { props = (prop + ' ' + (domPrefixes).join(ucProp + ' ') + ucProp).split(' '); return testDOMProps(props, prefixed, elem); } } // Modernizr.testAllProps() investigates whether a given style property, // or any of its vendor-prefixed variants, is recognized // // Note that the property names must be provided in the camelCase variant. // Modernizr.testAllProps('boxSizing') ModernizrProto.testAllProps = testPropsAll; /** * testAllProps determines whether a given CSS property is supported in the browser * * @memberOf Modernizr * @name Modernizr.testAllProps * @optionName Modernizr.testAllProps() * @optionProp testAllProps * @access public * @function testAllProps * @param {string} prop - String naming the property to test (either camelCase or hyphen-case) * @param {string} [value] - String of the value to test * @param {boolean} [skipValueTest=false] - Whether to skip testing that the value is supported when using non-native detection * @returns {string|boolean} returns the string version of the property, or `false` if it is unsupported * @example * * testAllProps determines whether a given CSS property, in some prefixed form, * is supported by the browser. * * ```js * testAllProps('boxSizing') // true * ``` * * It can optionally be given a CSS value in string form to test if a property * value is valid * * ```js * testAllProps('display', 'block') // true * testAllProps('display', 'penguin') // false * ``` * * A boolean can be passed as a third parameter to skip the value check when * native detection (@supports) isn't available. * * ```js * testAllProps('shapeOutside', 'content-box', true); * ``` */ function testAllProps(prop, value, skipValueTest) { return testPropsAll(prop, undefined, undefined, value, skipValueTest); } ModernizrProto.testAllProps = testAllProps; /*! { "name": "CSS Animations", "property": "cssanimations", "caniuse": "css-animation", "polyfills": ["transformie", "csssandpaper"], "tags": ["css"], "warnings": ["Android < 4 will pass this test, but can only animate a single property at a time"], "notes": [{ "name": "Article: 'Dispelling the Android CSS animation myths'", "href": "https://web.archive.org/web/20180602074607/https://daneden.me/2011/12/14/putting-up-with-androids-bullshit/" }] } !*/ /* DOC Detects whether or not elements can be animated using CSS */ Modernizr.addTest('cssanimations', testAllProps('animationName', 'a', true)); /*! { "name": "Box Shadow", "property": "boxshadow", "caniuse": "css-boxshadow", "tags": ["css"], "knownBugs": [ "WebOS false positives on this test.", "The Kindle Silk browser false positives" ] } !*/ Modernizr.addTest('boxshadow', testAllProps('boxShadow', '1px 1px', true)); /*! { "name": "Box Sizing", "property": "boxsizing", "caniuse": "css3-boxsizing", "polyfills": ["borderboxmodel", "boxsizingpolyfill", "borderbox"], "tags": ["css"], "builderAliases": ["css_boxsizing"], "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Web/CSS/box-sizing" }, { "name": "Related Github Issue", "href": "https://github.com/Modernizr/Modernizr/issues/248" }] } !*/ Modernizr.addTest('boxsizing', testAllProps('boxSizing', 'border-box', true) && (document.documentMode === undefined || document.documentMode > 7)); /** * List of property values to set for css tests. See ticket #21 * https://github.com/modernizr/modernizr/issues/21 * * @memberOf Modernizr * @name Modernizr._prefixes * @optionName Modernizr._prefixes * @optionProp prefixes * @access public * @example * * Modernizr._prefixes is the internal list of prefixes that we test against * inside of things like [prefixed](#modernizr-prefixed) and [prefixedCSS](#-code-modernizr-prefixedcss). It is simply * an array of hyphen-case vendor prefixes you can use within your code. * * Some common use cases include * * Generating all possible prefixed version of a CSS property * ```js * var rule = Modernizr._prefixes.join('transform: rotate(20deg); '); * * rule === 'transform: rotate(20deg); webkit-transform: rotate(20deg); moz-transform: rotate(20deg); o-transform: rotate(20deg); ms-transform: rotate(20deg);' * ``` * * Generating all possible prefixed version of a CSS value * ```js * rule = 'display:' + Modernizr._prefixes.join('flex; display:') + 'flex'; * * rule === 'display:flex; display:-webkit-flex; display:-moz-flex; display:-o-flex; display:-ms-flex; display:flex' * ``` */ // we use ['',''] rather than an empty array in order to allow a pattern of .`join()`ing prefixes to test // values in feature detects to continue to work var prefixes = (ModernizrProto._config.usePrefixes ? ' -webkit- -moz- -o- -ms- '.split(' ') : ['','']); // expose these for the plugin API. Look in the source for how to join() them against your input ModernizrProto._prefixes = prefixes; /*! { "name": "CSS Calc", "property": "csscalc", "caniuse": "calc", "tags": ["css"], "builderAliases": ["css_calc"], "authors": ["@calvein"] } !*/ /* DOC Method of allowing calculated values for length units. For example: ```css //lem { width: calc(100% - 3em); } ``` */ Modernizr.addTest('csscalc', function() { var prop = 'width:'; var value = 'calc(10px);'; var el = createElement('a'); el.style.cssText = prop + prefixes.join(value + prop); return !!el.style.length; }); /*! { "name": "Flexbox", "property": "flexbox", "caniuse": "flexbox", "tags": ["css"], "notes": [{ "name": "The _new_ flexbox", "href": "https://www.w3.org/TR/css-flexbox-1/" }], "warnings": [ "A `true` result for this detect does not imply that the `flex-wrap` property is supported; see the `flexwrap` detect." ] } !*/ /* DOC Detects support for the Flexible Box Layout model, a.k.a. Flexbox, which allows easy manipulation of layout order and sizing within a container. */ Modernizr.addTest('flexbox', testAllProps('flexBasis', '1px', true)); /*! { "name": "CSS Transforms", "property": "csstransforms", "caniuse": "transforms2d", "tags": ["css"] } !*/ Modernizr.addTest('csstransforms', function() { // Android < 3.0 is buggy, so we sniff and reject it // https://github.com/Modernizr/Modernizr/issues/903 return navigator.userAgent.indexOf('Android 2.') === -1 && testAllProps('transform', 'scale(1)', true); }); /*! { "name": "CSS Supports", "property": "supports", "caniuse": "css-featurequeries", "tags": ["css"], "builderAliases": ["css_supports"], "notes": [{ "name": "W3C Spec (The @supports rule)", "href": "https://dev.w3.org/csswg/css3-conditional/#at-supports" }, { "name": "Related Github Issue", "href": "https://github.com/Modernizr/Modernizr/issues/648" }, { "name": "W3C Spec (The CSSSupportsRule interface)", "href": "https://dev.w3.org/csswg/css3-conditional/#the-csssupportsrule-interface" }] } !*/ var newSyntax = 'CSS' in window && 'supports' in window.CSS; var oldSyntax = 'supportsCSS' in window; Modernizr.addTest('supports', newSyntax || oldSyntax); /*! { "name": "CSS Transforms 3D", "property": "csstransforms3d", "caniuse": "transforms3d", "tags": ["css"], "warnings": [ "Chrome may occasionally fail this test on some systems; more info: https://bugs.chromium.org/p/chromium/issues/detail?id=129004" ] } !*/ Modernizr.addTest('csstransforms3d', function() { return !!testAllProps('perspective', '1px', true); }); /*! { "name": "CSS Transitions", "property": "csstransitions", "caniuse": "css-transitions", "tags": ["css"] } !*/ Modernizr.addTest('csstransitions', testAllProps('transition', 'all', true)); /*! { "name": "ES6 Promises", "property": "promises", "caniuse": "promises", "polyfills": ["es6promises"], "authors": ["Krister Kari", "Jake Archibald"], "tags": ["es6"], "notes": [{ "name": "The ES6 promises spec", "href": "https://github.com/domenic/promises-unwrapping" }, { "name": "Chromium dashboard - ES6 Promises", "href": "https://www.chromestatus.com/features/5681726336532480" }, { "name": "JavaScript Promises: an Introduction", "href": "https://developers.google.com/web/fundamentals/primers/promises/" }] } !*/ /* DOC Check if browser implements ECMAScript 6 Promises per specification. */ Modernizr.addTest('promises', function() { return 'Promise' in window && // Some of these methods are missing from // Firefox/Chrome experimental implementations 'resolve' in window.Promise && 'reject' in window.Promise && 'all' in window.Promise && 'race' in window.Promise && // Older version of the spec had a resolver object // as the arg rather than a function (function() { var resolve; new window.Promise(function(r) { resolve = r; }); return typeof resolve === 'function'; }()); }); /*! { "name": "File API", "property": "filereader", "caniuse": "fileapi", "notes": [{ "name": "W3C Working Draft Spec", "href": "https://www.w3.org/TR/FileAPI/" }], "tags": ["file"], "builderAliases": ["file_api"], "knownBugs": ["Will fail in Safari 5 due to its lack of support for the standards defined FileReader object"] } !*/ /* DOC `filereader` 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.) */ Modernizr.addTest('filereader', !!(window.File && window.FileList && window.FileReader)); /** * atRule returns a given CSS property at-rule (eg @keyframes), possibly in * some prefixed form, or false, in the case of an unsupported rule * * @memberOf Modernizr * @name Modernizr.atRule * @optionName Modernizr.atRule() * @optionProp atRule * @access public * @function atRule * @param {string} prop - String name of the @-rule to test for * @returns {string|boolean} The string representing the (possibly prefixed) * valid version of the @-rule, or `false` when it is unsupported. * @example * ```js * var keyframes = Modernizr.atRule('@keyframes'); * * if (keyframes) { * // keyframes are supported * // could be `@-webkit-keyframes` or `@keyframes` * } else { * // keyframes === `false` * } * ``` */ var atRule = function(prop) { var length = prefixes.length; var cssrule = window.CSSRule; var rule; if (typeof cssrule === 'undefined') { return undefined; } if (!prop) { return false; } // remove literal @ from beginning of provided property prop = prop.replace(/^@/, ''); // CSSRules use underscores instead of dashes rule = prop.replace(/-/g, '_').toUpperCase() + '_RULE'; if (rule in cssrule) { return '@' + prop; } for (var i = 0; i < length; i++) { // prefixes gives us something like -o-, and we want O_ var prefix = prefixes[i]; var thisRule = prefix.toUpperCase() + '_' + rule; if (thisRule in cssrule) { return '@-' + prefix.toLowerCase() + '-' + prop; } } return false; }; ModernizrProto.atRule = atRule; /** * prefixed returns the prefixed or nonprefixed property name variant of your input * * @memberOf Modernizr * @name Modernizr.prefixed * @optionName Modernizr.prefixed() * @optionProp prefixed * @access public * @function prefixed * @param {string} prop - String name of the property to test for * @param {object} [obj] - An object to test for the prefixed properties on * @param {HTMLElement} [elem] - An element used to test specific properties against * @returns {string|boolean} The string representing the (possibly prefixed) valid * version of the property, or `false` when it is unsupported. * @example * * Modernizr.prefixed takes a string css value in the DOM style camelCase (as * opposed to the css style hyphen-case) form and returns the (possibly prefixed) * version of that property that the browser actually supports. * * For example, in older Firefox... * ```js * prefixed('boxSizing') * ``` * returns 'MozBoxSizing' * * In newer Firefox, as well as any other browser that support the unprefixed * version would simply return `boxSizing`. Any browser that does not support * the property at all, it will return `false`. * * By default, prefixed is checked against a DOM element. If you want to check * for a property on another object, just pass it as a second argument * * ```js * var rAF = prefixed('requestAnimationFrame', window); * * raf(function() { * renderFunction(); * }) * ``` * * Note that this will return _the actual function_ - not the name of the function. * If you need the actual name of the property, pass in `false` as a third argument * * ```js * var rAFProp = prefixed('requestAnimationFrame', window, false); * * rafProp === 'WebkitRequestAnimationFrame' // in older webkit * ``` * * One common use case for prefixed is if you're trying to determine which transition * end event to bind to, you might do something like... * ```js * var transEndEventNames = { * 'WebkitTransition' : 'webkitTransitionEnd', * Saf 6, Android Browser * 'MozTransition' : 'transitionend', * only for FF < 15 * 'transition' : 'transitionend' * IE10, Opera, Chrome, FF 15+, Saf 7+ * }; * * var transEndEventName = transEndEventNames[ Modernizr.prefixed('transition') ]; * ``` * * If you want a similar lookup, but in hyphen-case, you can use [prefixedCSS](#modernizr-prefixedcss). */ var prefixed = ModernizrProto.prefixed = function(prop, obj, elem) { if (prop.indexOf('@') === 0) { return atRule(prop); } if (prop.indexOf('-') !== -1) { // Convert hyphen-case to camelCase prop = cssToDOM(prop); } if (!obj) { return testPropsAll(prop, 'pfx'); } else { // Testing DOM property e.g. Modernizr.prefixed('requestAnimationFrame', window) // 'mozRequestAnimationFrame' return testPropsAll(prop, obj, elem); } }; /*! { "name": "Filesystem API", "property": "filesystem", "caniuse": "filesystem", "notes": [{ "name": "W3C Spec", "href": "https://www.w3.org/TR/file-system-api/" }], "authors": ["Eric Bidelman (@ebidel)"], "tags": ["file"], "builderAliases": ["file_filesystem"], "knownBugs": ["The API will be present in Chrome incognito, but will throw an exception. See crbug.com/93417"] } !*/ Modernizr.addTest('filesystem', !!prefixed('requestFileSystem', window)); /*! { "name": "placeholder attribute", "property": "placeholder", "tags": ["forms", "attribute"], "builderAliases": ["forms_placeholder"] } !*/ /* DOC Tests for placeholder attribute in inputs and textareas */ Modernizr.addTest('placeholder', ('placeholder' in createElement('input') && 'placeholder' in createElement('textarea'))); /*! { "name": "Fullscreen API", "property": "fullscreen", "caniuse": "fullscreen", "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en/API/Fullscreen" }], "polyfills": ["screenfulljs"], "builderAliases": ["fullscreen_api"] } !*/ /* DOC Detects support for the ability to make the current website take over the user's entire screen */ // github.com/Modernizr/Modernizr/issues/739 Modernizr.addTest('fullscreen', !!(prefixed('exitFullscreen', document, false) || prefixed('cancelFullScreen', document, false))); /*! { "name": "Geolocation API", "property": "geolocation", "caniuse": "geolocation", "tags": ["media"], "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/WebAPI/Using_geolocation" }], "polyfills": [ "joshuabell-polyfill", "webshims", "geo-location-javascript", "geolocation-api-polyfill" ] } !*/ /* DOC Detects support for the Geolocation API for users to provide their location to web applications. */ // geolocation is often considered a trivial feature detect... // Turns out, it's quite tricky to get right: // // Using !!navigator.geolocation does two things we don't want. It: // 1. Leaks memory in IE9: github.com/Modernizr/Modernizr/issues/513 // 2. Disables page caching in WebKit: webk.it/43956 // // Meanwhile, in Firefox < 8, an about:config setting could expose // a false positive that would throw an exception: bugzil.la/688158 Modernizr.addTest('geolocation', 'geolocation' in navigator); /** * Modernizr.hasEvent() detects support for a given event * * @memberOf Modernizr * @name Modernizr.hasEvent * @optionName Modernizr.hasEvent() * @optionProp hasEvent * @access public * @function hasEvent * @param {string|*} eventName - the name of an event to test for (e.g. "resize") * @param {Element|string} [element=HTMLDivElement] - is the element|document|window|tagName to test on * @returns {boolean} * @example * `Modernizr.hasEvent` lets you determine if the browser supports a supplied event. * By default, it does this detection on a div element * * ```js * hasEvent('blur') // true; * ``` * * However, you are able to give an object as a second argument to hasEvent to * detect an event on something other than a div. * * ```js * hasEvent('devicelight', window) // true; * ``` */ var hasEvent = (function() { // Detect whether event support can be detected via `in`. Test on a DOM element // using the "blur" event b/c it should always exist. bit.ly/event-detection var needsFallback = !('onblur' in docElement); function inner(eventName, element) { var isSupported; if (!eventName) { return false; } if (!element || typeof element === 'string') { element = createElement(element || 'div'); } // Testing via the `in` operator is sufficient for modern browsers and IE. // When using `setAttribute`, IE skips "unload", WebKit skips "unload" and // "resize", whereas `in` "catches" those. eventName = 'on' + eventName; isSupported = eventName in element; // Fallback technique for old Firefox - bit.ly/event-detection if (!isSupported && needsFallback) { if (!element.setAttribute) { // Switch to generic element if it lacks `setAttribute`. // It could be the `document`, `window`, or something else. element = createElement('div'); } element.setAttribute(eventName, ''); isSupported = typeof element[eventName] === 'function'; if (element[eventName] !== undefined) { // If property was created, "remove it" by setting value to `undefined`. element[eventName] = undefined; } element.removeAttribute(eventName); } return isSupported; } return inner; })(); ModernizrProto.hasEvent = hasEvent; /*! { "name": "Hashchange event", "property": "hashchange", "caniuse": "hashchange", "tags": ["history"], "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Web/API/WindowEventHandlers/onhashchange" }], "polyfills": [ "jquery-hashchange", "moo-historymanager", "jquery-ajaxy", "hasher", "shistory" ] } !*/ /* DOC Detects support for the `hashchange` event, fired when the current location fragment changes. */ Modernizr.addTest('hashchange', function() { if (hasEvent('hashchange', window) === false) { return false; } // documentMode logic from YUI to filter out IE8 Compat Mode // which false positives. return (document.documentMode === undefined || document.documentMode > 7); }); /*! { "name": "History API", "property": "history", "caniuse": "history", "tags": ["history"], "authors": ["Hay Kranen", "Alexander Farkas"], "notes": [{ "name": "W3C Spec", "href": "https://www.w3.org/TR/html51/browsers.html#the-history-interface" }, { "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Web/API/window.history" }], "polyfills": ["historyjs", "html5historyapi"] } !*/ /* DOC Detects support for the History API for manipulating the browser session history. */ Modernizr.addTest('history', function() { // Issue #733 // The stock browser on Android 2.2 & 2.3, and 4.0.x returns positive on history support // Unfortunately support is really buggy and there is no clean way to detect // these bugs, so we fall back to a user agent sniff :( var ua = navigator.userAgent; // Some browsers allow to have empty userAgent. // Therefore, we need to check ua before using "indexOf" on it. if(!ua) { return false; } // We only want Android 2 and 4.0, stock browser, and not Chrome which identifies // itself as 'Mobile Safari' as well, nor Windows Phone (issue #1471). if ((ua.indexOf('Android 2.') !== -1 || (ua.indexOf('Android 4.0') !== -1)) && ua.indexOf('Mobile Safari') !== -1 && ua.indexOf('Chrome') === -1 && ua.indexOf('Windows Phone') === -1 && // Since all documents on file:// share an origin, the History apis are // blocked there as well location.protocol !== 'file:' ) { return false; } // Return the regular check return (window.history && 'pushState' in window.history); }); /** * hasOwnProp is a shim for hasOwnProperty that is needed for Safari 2.0 support * * @author kangax * @access private * @function hasOwnProp * @param {object} object - The object to check for a property * @param {string} property - The property to check for * @returns {boolean} */ // hasOwnProperty shim by kangax needed for Safari 2.0 support var hasOwnProp; (function() { var _hasOwnProperty = ({}).hasOwnProperty; /* istanbul ignore else */ /* we have no way of testing IE 5.5 or safari 2, * so just assume the else gets hit */ if (!is(_hasOwnProperty, 'undefined') && !is(_hasOwnProperty.call, 'undefined')) { hasOwnProp = function(object, property) { return _hasOwnProperty.call(object, property); }; } else { hasOwnProp = function(object, property) { /* yes, this can give false positives/negatives, but most of the time we don't care about those */ return ((property in object) && is(object.constructor.prototype[property], 'undefined')); }; } })(); /** * setClasses takes an array of class names and adds them to the root element * * @access private * @function setClasses * @param {string[]} classes - Array of class names */ // Pass in an and array of class names, e.g.: // ['no-webp', 'borderradius', ...] function setClasses(classes) { var className = docElement.className; var classPrefix = Modernizr._config.classPrefix || ''; if (isSVG) { className = className.baseVal; } // Change `no-js` to `js` (independently of the `enableClasses` option) // Handle classPrefix on this too if (Modernizr._config.enableJSClass) { var reJS = new RegExp('(^|\\s)' + classPrefix + 'no-js(\\s|$)'); className = className.replace(reJS, '$1' + classPrefix + 'js$2'); } if (Modernizr._config.enableClasses) { // Add the new classes if (classes.length > 0) { className += ' ' + classPrefix + classes.join(' ' + classPrefix); } if (isSVG) { docElement.className.baseVal = className; } else { docElement.className = className; } } } ; // _l tracks listeners for async tests, as well as tests that execute after the initial run ModernizrProto._l = {}; /** * Modernizr.on is a way to listen for the completion of async tests. Being * asynchronous, they may not finish before your scripts run. As a result you * will get a possibly false negative `undefined` value. * * @memberOf Modernizr * @name Modernizr.on * @access public * @function on * @param {string} feature - String name of the feature detect * @param {Function} cb - Callback function returning a Boolean - true if feature is supported, false if not * @returns {void} * @example * * ```js * Modernizr.on('flash', function( result ) { * if (result) { * // the browser has flash * } else { * // the browser does not have flash * } * }); * ``` */ ModernizrProto.on = function(feature, cb) { // Create the list of listeners if it doesn't exist if (!this._l[feature]) { this._l[feature] = []; } // Push this test on to the listener list this._l[feature].push(cb); // If it's already been resolved, trigger it on next tick if (Modernizr.hasOwnProperty(feature)) { // Next Tick setTimeout(function() { Modernizr._trigger(feature, Modernizr[feature]); }, 0); } }; /** * _trigger is the private function used to signal test completion and run any * callbacks registered through [Modernizr.on](#modernizr-on) * * @memberOf Modernizr * @name Modernizr._trigger * @access private * @function _trigger * @param {string} feature - string name of the feature detect * @param {Function|boolean} [res] - A feature detection function, or the boolean = * result of a feature detection function * @returns {void} */ ModernizrProto._trigger = function(feature, res) { if (!this._l[feature]) { return; } var cbs = this._l[feature]; // Force async setTimeout(function() { var i, cb; for (i = 0; i < cbs.length; i++) { cb = cbs[i]; cb(res); } }, 0); // Don't trigger these again delete this._l[feature]; }; /** * addTest allows you to define your own feature detects that are not currently * included in Modernizr (under the covers it's the exact same code Modernizr * uses for its own [feature detections](https://github.com/Modernizr/Modernizr/tree/master/feature-detects)). * Just like the official detects, the result * will be added onto the Modernizr object, as well as an appropriate className set on * the html element when configured to do so * * @memberOf Modernizr * @name Modernizr.addTest * @optionName Modernizr.addTest() * @optionProp addTest * @access public * @function addTest * @param {string|object} feature - The string name of the feature detect, or an * object of feature detect names and test * @param {Function|boolean} test - Function returning true if feature is supported, * false if not. Otherwise a boolean representing the results of a feature detection * @returns {object} the Modernizr object to allow chaining * @example * * The most common way of creating your own feature detects is by calling * `Modernizr.addTest` with a string (preferably just lowercase, without any * punctuation), and a function you want executed that will return a boolean result * * ```js * Modernizr.addTest('itsTuesday', function() { * var d = new Date(); * return d.getDay() === 2; * }); * ``` * * When the above is run, it will set Modernizr.itstuesday to `true` when it is tuesday, * and to `false` every other day of the week. One thing to notice is that the names of * feature detect functions are always lowercased when added to the Modernizr object. That * means that `Modernizr.itsTuesday` will not exist, but `Modernizr.itstuesday` will. * * * Since we only look at the returned value from any feature detection function, * you do not need to actually use a function. For simple detections, just passing * in a statement that will return a boolean value works just fine. * * ```js * Modernizr.addTest('hasjquery', 'jQuery' in window); * ``` * * Just like before, when the above runs `Modernizr.hasjquery` will be true if * jQuery has been included on the page. Not using a function saves a small amount * of overhead for the browser, as well as making your code much more readable. * * Finally, you also have the ability to pass in an object of feature names and * their tests. This is handy if you want to add multiple detections in one go. * The keys should always be a string, and the value can be either a boolean or * function that returns a boolean. * * ```js * var detects = { * 'hasjquery': 'jQuery' in window, * 'itstuesday': function() { * var d = new Date(); * return d.getDay() === 2; * } * } * * Modernizr.addTest(detects); * ``` * * There is really no difference between the first methods and this one, it is * just a convenience to let you write more readable code. */ function addTest(feature, test) { if (typeof feature === 'object') { for (var key in feature) { if (hasOwnProp(feature, key)) { addTest(key, feature[ key ]); } } } else { feature = feature.toLowerCase(); var featureNameSplit = feature.split('.'); var last = Modernizr[featureNameSplit[0]]; // Again, we don't check for parent test existence. Get that right, though. if (featureNameSplit.length === 2) { last = last[featureNameSplit[1]]; } if (typeof last !== 'undefined') { // we're going to quit if you're trying to overwrite an existing test // if we were to allow it, we'd do this: // var re = new RegExp("\\b(no-)?" + feature + "\\b"); // docElement.className = docElement.className.replace( re, '' ); // but, no rly, stuff 'em. return Modernizr; } test = typeof test === 'function' ? test() : test; // Set the value (this is the magic, right here). if (featureNameSplit.length === 1) { Modernizr[featureNameSplit[0]] = test; } else { // cast to a Boolean, if not one already if (Modernizr[featureNameSplit[0]] && !(Modernizr[featureNameSplit[0]] instanceof Boolean)) { Modernizr[featureNameSplit[0]] = new Boolean(Modernizr[featureNameSplit[0]]); } Modernizr[featureNameSplit[0]][featureNameSplit[1]] = test; } // Set a single class (either `feature` or `no-feature`) setClasses([(!!test && test !== false ? '' : 'no-') + featureNameSplit.join('-')]); // Trigger the event Modernizr._trigger(feature, test); } return Modernizr; // allow chaining. } // After all the tests are run, add self to the Modernizr prototype Modernizr._q.push(function() { ModernizrProto.addTest = addTest; }); /*! { "name": "Webp", "async": true, "property": "webp", "caniuse": "webp", "tags": ["image"], "builderAliases": ["img_webp"], "authors": ["Krister Kari", "@amandeep", "Rich Bradshaw", "Ryan Seddon", "Paul Irish"], "notes": [{ "name": "Webp Info", "href": "https://developers.google.com/speed/webp/" }, { "name": "Chromium blog - Chrome 32 Beta: Animated WebP images and faster Chrome for Android touch input", "href": "https://blog.chromium.org/2013/11/chrome-32-beta-animated-webp-images-and.html" }, { "name": "Webp Lossless Spec", "href": "https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification" }, { "name": "Article about WebP support", "href": "https://optimus.keycdn.com/support/webp-support/" }, { "name": "Chromium WebP announcement", "href": "https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html?m=1" }] } !*/ /* DOC Tests for lossy, non-alpha webp support. Tests for all forms of webp support (lossless, lossy, alpha, and animated).. Modernizr.webp // Basic support (lossy) Modernizr.webp.lossless // Lossless Modernizr.webp.alpha // Alpha (both lossy and lossless) Modernizr.webp.animation // Animated WebP */ Modernizr.addAsyncTest(function() { var webpTests = [{ 'uri': 'data:image/webp;base64,UklGRiQAAABXRUJQVlA4IBgAAAAwAQCdASoBAAEAAwA0JaQAA3AA/vuUAAA=', 'name': 'webp' }, { 'uri': 'data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAABBxAR/Q9ERP8DAABWUDggGAAAADABAJ0BKgEAAQADADQlpAADcAD++/1QAA==', 'name': 'webp.alpha' }, { 'uri': 'data:image/webp;base64,UklGRlIAAABXRUJQVlA4WAoAAAASAAAAAAAAAAAAQU5JTQYAAAD/////AABBTk1GJgAAAAAAAAAAAAAAAAAAAGQAAABWUDhMDQAAAC8AAAAQBxAREYiI/gcA', 'name': 'webp.animation' }, { 'uri': 'data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAAAAAAfQ//73v/+BiOh/AAA=', 'name': 'webp.lossless' }]; var webp = webpTests.shift(); function test(name, uri, cb) { var image = new Image(); function addResult(event) { // if the event is from 'onload', check the see if the image's width is // 1 pixel (which indicates support). otherwise, it fails var result = event && event.type === 'load' ? image.width === 1 : false; var baseTest = name === 'webp'; // if it is the base test, and the result is false, just set a literal false // rather than use the Boolean constructor addTest(name, (baseTest && result) ? new Boolean(result) : result); if (cb) { cb(event); } } image.onerror = addResult; image.onload = addResult; image.src = uri; } // test for webp support in general test(webp.name, webp.uri, function(e) { // if the webp test loaded, test everything else. if (e && e.type === 'load') { for (var i = 0; i < webpTests.length; i++) { test(webpTests[i].name, webpTests[i].uri); } } }); }); /*! { "name": "Webp Alpha", "async": true, "property": "webpalpha", "aliases": ["webp-alpha"], "tags": ["image"], "authors": ["Krister Kari", "Rich Bradshaw", "Ryan Seddon", "Paul Irish"], "notes": [{ "name": "WebP Info", "href": "https://developers.google.com/speed/webp/" }, { "name": "Article about WebP support", "href": "https://optimus.keycdn.com/support/webp-support/" }, { "name": "Chromium WebP announcement", "href": "https://blog.chromium.org/2011/11/lossless-and-transparency-encoding-in.html?m=1" }] } !*/ /* DOC Tests for transparent webp support. */ Modernizr.addAsyncTest(function() { var image = new Image(); image.onerror = function() { addTest('webpalpha', false, {aliases: ['webp-alpha']}); }; image.onload = function() { addTest('webpalpha', image.width === 1, {aliases: ['webp-alpha']}); }; image.src = 'data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAABBxAR/Q9ERP8DAABWUDggGAAAADABAJ0BKgEAAQADADQlpAADcAD++/1QAA=='; }); /*! { "name": "IndexedDB", "property": "indexeddb", "caniuse": "indexeddb", "tags": ["storage"], "polyfills": ["indexeddb"], "async": true } !*/ /* DOC Detects support for the IndexedDB client-side storage API (final spec). */ // Vendors had inconsistent prefixing with the experimental Indexed DB: // - Webkit's implementation is accessible through webkitIndexedDB // - Firefox shipped moz_indexedDB before FF4b9, but since then has been mozIndexedDB // For speed, we don't test the legacy (and beta-only) indexedDB Modernizr.addAsyncTest(function() { var indexeddb; try { // Firefox throws a Security Error when cookies are disabled indexeddb = prefixed('indexedDB', window); } catch (e) { } if (indexeddb) { var testDBName = 'modernizr-' + Math.random(); var req; try { req = indexeddb.open(testDBName); } catch (e) { addTest('indexeddb', false); return; } req.onerror = function(event) { if (req.error && (req.error.name === 'InvalidStateError' || req.error.name === 'UnknownError')) { addTest('indexeddb', false); event.preventDefault(); } else { addTest('indexeddb', true); detectDeleteDatabase(indexeddb, testDBName); } }; req.onsuccess = function() { addTest('indexeddb', true); detectDeleteDatabase(indexeddb, testDBName); }; } else { addTest('indexeddb', false); } }); function detectDeleteDatabase(indexeddb, testDBName) { var deleteReq = indexeddb.deleteDatabase(testDBName); deleteReq.onsuccess = function() { addTest('indexeddb.deletedatabase', true); }; deleteReq.onerror = function() { addTest('indexeddb.deletedatabase', false); }; } ; /*! { "name": "JSON", "property": "json", "caniuse": "json", "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Glossary/JSON" }], "polyfills": ["json2"] } !*/ /* DOC Detects native support for JSON handling functions. */ // this will also succeed if you've loaded the JSON2.js polyfill ahead of time // ... but that should be obvious. :) Modernizr.addTest('json', 'JSON' in window && 'parse' in JSON && 'stringify' in JSON); /*! { "name": "Fetch API", "property": "fetch", "tags": ["network"], "caniuse": "fetch", "notes": [{ "name": "WHATWG Spec", "href": "https://fetch.spec.whatwg.org/" }], "polyfills": ["fetch"] } !*/ /* DOC Detects support for the fetch API, a modern replacement for XMLHttpRequest. */ Modernizr.addTest('fetch', 'fetch' in window); /*! { "name": "XML HTTP Request Level 2 XHR2", "property": "xhr2", "caniuse": "xhr2", "tags": ["network"], "builderAliases": ["network_xhr2"], "notes": [{ "name": "W3C Spec", "href": "https://www.w3.org/TR/XMLHttpRequest2/" }, { "name": "Details on Related Github Issue", "href": "https://github.com/Modernizr/Modernizr/issues/385" }] } !*/ /* DOC Tests for XHR2. */ // all three of these details report consistently across all target browsers: // !!(window.ProgressEvent); // 'XMLHttpRequest' in window && 'withCredentials' in new XMLHttpRequest Modernizr.addTest('xhr2', 'XMLHttpRequest' in window && 'withCredentials' in new XMLHttpRequest()); /*! { "name": "Notification", "property": "notification", "caniuse": "notifications", "authors": ["Theodoor van Donge", "Hendrik Beskow"], "notes": [{ "name": "HTML5 Rocks Tutorial", "href": "https://www.html5rocks.com/en/tutorials/notifications/quick/" }, { "name": "W3C Spec", "href": "https://www.w3.org/TR/notifications/" }, { "name": "Changes in Chrome to Notifications API due to Service Worker Push Notifications", "href": "https://developers.google.com/web/updates/2015/05/Notifying-you-of-notificiation-changes" }], "knownBugs": ["Possibility of false-positive on Chrome for Android if permissions we're granted for a website prior to Chrome 44."], "polyfills": ["desktop-notify", "html5-notifications"] } !*/ /* DOC Detects support for the Notifications API */ Modernizr.addTest('notification', function() { if (!window.Notification || !window.Notification.requestPermission) { return false; } // if permission is already granted, assume support if (window.Notification.permission === 'granted') { return true; } try { new window.Notification(''); } catch (e) { if (e.name === 'TypeError') { return false; } } return true; }); /*! { "name": "Navigation Timing API", "property": "performance", "caniuse": "nav-timing", "tags": ["performance"], "authors": ["Scott Murphy (@uxder)"], "notes": [{ "name": "W3C Spec", "href": "https://www.w3.org/TR/navigation-timing/" }, { "name": "HTML5 Rocks Tutorial", "href": "https://www.html5rocks.com/en/tutorials/webperformance/basics/" }], "polyfills": ["perfnow"] } !*/ /* DOC Detects support for the Navigation Timing API, for measuring browser and connection performance. */ Modernizr.addTest('performance', !!prefixed('performance', window)); /** * List of JavaScript DOM values used for tests including a NON-prefix * * @memberOf Modernizr * @name Modernizr._domPrefixesAll * @optionName Modernizr._domPrefixesAll * @optionProp domPrefixesAll * @access public * @example * * Modernizr._domPrefixesAll is exactly the same as [_domPrefixes](#modernizr-_domPrefixes), but also * adds an empty string in the array to test for a non-prefixed value * * ```js * Modernizr._domPrefixesAll === [ "", "Moz", "O", "ms", "Webkit" ]; * ``` */ var domPrefixesAll = [''].concat(domPrefixes); ModernizrProto._domPrefixesAll = domPrefixesAll; /*! { "name": "DOM Pointer Events API", "property": "pointerevents", "caniuse": "pointer", "tags": ["input"], "authors": ["Stu Cox"], "notes": [{ "name": "W3C Spec (Pointer Events)", "href": "https://www.w3.org/TR/pointerevents/" }, { "name": "W3C Spec (Pointer Events Level 2)", "href": "https://www.w3.org/TR/pointerevents2/" }, { "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent" }], "warnings": ["This property name now refers to W3C DOM PointerEvents: https://github.com/Modernizr/Modernizr/issues/548#issuecomment-12812099"], "polyfills": ["pep"] } !*/ /* DOC Detects support for the DOM Pointer Events API, which provides a unified event interface for pointing input devices, as implemented in IE10+, Edge and Blink. */ // **Test name hijacked!** // Now refers to W3C DOM PointerEvents spec rather than the CSS pointer-events property. Modernizr.addTest('pointerevents', function() { // Cannot use `.prefixed()` for events, so test each prefix for (var i = 0, len = domPrefixesAll.length; i < len; i++) { if (hasEvent(domPrefixesAll[i] + 'pointerdown')) { return true; } } return false; }); /*! { "name": "QuerySelector", "property": "queryselector", "caniuse": "queryselector", "tags": ["queryselector"], "authors": ["Andrew Betts (@triblondon)"], "notes": [{ "name": "W3C Spec", "href": "https://www.w3.org/TR/selectors-api/#queryselectorall" }], "polyfills": ["css-selector-engine"] } !*/ /* DOC Detects support for querySelector. */ Modernizr.addTest('queryselector', 'querySelector' in document && 'querySelectorAll' in document); /*! { "name": "script[async]", "property": "scriptasync", "caniuse": "script-async", "tags": ["script"], "builderAliases": ["script_async"], "authors": ["Theodoor van Donge"] } !*/ /* DOC Detects support for the `async` attribute on the `