/*! * modernizr v3.13.0 * Build https://modernizr.com/download?-cors-cryptography-cssanimations-cssfilters-displaytable-es5date-es5function-es5object-es5undefined-es6array-es6collections-es6string-fetch-flexbox-json-localstorage-objectfit-promises-resizeobserver-sandbox-svg-svgasimg-svgfilters-urlparser-urlsearchparams-webaudio-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('-')); } } } } ; /** * 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); } ; /** * 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); } } ; /** * 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)); /** * testStyles injects an element with style element and some CSS rules * * @memberOf Modernizr * @name Modernizr.testStyles * @optionName Modernizr.testStyles() * @optionProp testStyles * @access public * @function testStyles * @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} * @example * * `Modernizr.testStyles` takes a CSS rule and injects it onto the current page * along with (possibly multiple) DOM elements. This lets you check for features * that can not be detected by simply checking the [IDL](https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Interface_development_guide/IDL_interface_rules). * * ```js * Modernizr.testStyles('#modernizr { width: 9px; color: papayawhip; }', function(elem, rule) { * // elem is the first DOM node in the page (by default #modernizr) * // rule is the first argument you supplied - the CSS rule in string form * * addTest('widthworks', elem.style.width === '9px') * }); * ``` * * If your test requires multiple nodes, you can include a third argument * indicating how many additional div elements to include on the page. The * additional nodes are injected as children of the `elem` that is returned as * the first argument to the callback. * * ```js * Modernizr.testStyles('#modernizr {width: 1px}; #modernizr2 {width: 2px}', function(elem) { * document.getElementById('modernizr').style.width === '1px'; // true * document.getElementById('modernizr2').style.width === '2px'; // true * elem.firstChild === document.getElementById('modernizr2'); // true * }, 1); * ``` * * By default, all of the additional elements have an ID of `modernizr[n]`, where * `n` is its index (e.g. the first additional, second overall is `#modernizr2`, * the second additional is `#modernizr3`, etc.). * If you want to have more meaningful IDs for your function, you can provide * them as the fourth argument, as an array of strings * * ```js * Modernizr.testStyles('#foo {width: 10px}; #bar {height: 20px}', function(elem) { * elem.firstChild === document.getElementById('foo'); // true * elem.lastChild === document.getElementById('bar'); // true * }, 2, ['foo', 'bar']); * ``` */ var testStyles = ModernizrProto.testStyles = injectElementWithStyles; /*! { "name": "CSS Display table", "property": "displaytable", "caniuse": "css-table", "authors": ["scottjehl"], "tags": ["css"], "builderAliases": ["css_displaytable"], "notes": [{ "name": "Detects for all additional table display values", "href": "https://pastebin.com/Gk9PeVaQ" }] } !*/ /* DOC `display: table` and `table-cell` test. (both are tested under one name `table-cell` ) */ // If a document is in rtl mode this test will fail so we force ltr mode on the injected // element https://github.com/Modernizr/Modernizr/issues/716 testStyles('#modernizr{display: table; direction: ltr}#modernizr div{display: table-cell; padding: 10px}', function(elem) { var ret; var child = elem.childNodes; ret = child[0].offsetLeft < child[1].offsetLeft; Modernizr.addTest('displaytable', ret, {aliases: ['display-table']}); }, 2); /** * 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 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 Filters", "property": "cssfilters", "caniuse": "css-filters", "polyfills": ["polyfilter"], "tags": ["css"], "builderAliases": ["css_filters"], "notes": [{ "name": "MDN Docs", "href": "https://developer.mozilla.org/en-US/docs/Web/CSS/filter" }] } !*/ Modernizr.addTest('cssfilters', function() { if (Modernizr.supports) { return testAllProps('filter', 'blur(2px)'); } else { var el = createElement('a'); el.style.cssText = prefixes.join('filter:blur(2px); '); // https://github.com/Modernizr/Modernizr/issues/615 // documentMode is needed for false positives in oldIE, please see issue above return !!el.style.length && ((document.documentMode === undefined || document.documentMode > 9)); } }); /*! { "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)); /** * 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": "CSS Object Fit", "caniuse": "object-fit", "property": "objectfit", "tags": ["css"], "builderAliases": ["css_objectfit"], "notes": [{ "name": "Opera Article on Object Fit", "href": "https://dev.opera.com/articles/css3-object-fit-object-position/" }] } !*/ Modernizr.addTest('objectfit', !!prefixed('objectFit'), {aliases: ['object-fit']}); /*! { "name": "ES5 Date", "property": "es5date", "notes": [{ "name": "ECMAScript 5.1 Language Specification", "href": "https://www.ecma-international.org/ecma-262/5.1/" }], "polyfills": ["es5shim"], "authors": ["Ron Waldon (@jokeyrhyme)"], "tags": ["es5"] } !*/ /* DOC Check if browser implements ECMAScript 5 Date per specification. */ Modernizr.addTest('es5date', function() { var isoDate = '2013-04-12T06:06:37.307Z', canParseISODate = false; try { canParseISODate = !!Date.parse(isoDate); } catch (e) { // no ISO date parsing yet } return !!(Date.now && Date.prototype && Date.prototype.toISOString && Date.prototype.toJSON && canParseISODate); }); /*! { "name": "ES5 Function", "property": "es5function", "notes": [{ "name": "ECMAScript 5.1 Language Specification", "href": "https://www.ecma-international.org/ecma-262/5.1/" }], "polyfills": ["es5shim"], "authors": ["Ron Waldon (@jokeyrhyme)"], "tags": ["es5"] } !*/ /* DOC Check if browser implements ECMAScript 5 Function per specification. */ Modernizr.addTest('es5function', function() { return !!(Function.prototype && Function.prototype.bind); }); /*! { "name": "ES5 Object", "property": "es5object", "notes": [{ "name": "ECMAScript 5.1 Language Specification", "href": "https://www.ecma-international.org/ecma-262/5.1/" }], "polyfills": ["es5shim", "es5sham"], "authors": ["Ron Waldon (@jokeyrhyme)"], "tags": ["es5"] } !*/ /* DOC Check if browser implements ECMAScript 5 Object per specification. */ Modernizr.addTest('es5object', function() { return !!(Object.keys && Object.create && Object.getPrototypeOf && Object.getOwnPropertyNames && Object.isSealed && Object.isFrozen && Object.isExtensible && Object.getOwnPropertyDescriptor && Object.defineProperty && Object.defineProperties && Object.seal && Object.freeze && Object.preventExtensions); }); /*! { "name": "ES5 Immutable Undefined", "property": "es5undefined", "notes": [{ "name": "ECMAScript 5.1 Language Specification", "href": "https://www.ecma-international.org/ecma-262/5.1/" }, { "name": "original implementation of detect code", "href": "https://kangax.github.io/compat-table/es5/" }], "authors": ["Ron Waldon (@jokeyrhyme)"], "tags": ["es5"] } !*/ /* DOC Check if browser prevents assignment to global `undefined` per ECMAScript 5. */ Modernizr.addTest('es5undefined', function() { var result, originalUndefined; try { originalUndefined = window.undefined; window.undefined = 12345; result = typeof window.undefined === 'undefined'; window.undefined = originalUndefined; } catch (e) { return false; } return result; }); /*! { "name": "ES6 Array", "property": "es6array", "notes": [{ "name": "unofficial ECMAScript 6 draft specification", "href": "https://web.archive.org/web/20180825202128/https://tc39.github.io/ecma262/" }], "polyfills": ["es6shim"], "authors": ["Ron Waldon (@jokeyrhyme)"], "warnings": ["ECMAScript 6 is still a only a draft, so this detect may not match the final specification or implementations."], "tags": ["es6"] } !*/ /* DOC Check if browser implements ECMAScript 6 Array per specification. */ Modernizr.addTest('es6array', !!(Array.prototype && Array.prototype.copyWithin && Array.prototype.fill && Array.prototype.find && Array.prototype.findIndex && Array.prototype.keys && Array.prototype.entries && Array.prototype.values && Array.from && Array.of)); /*! { "name": "ES6 Collections", "property": "es6collections", "notes": [{ "name": "unofficial ECMAScript 6 draft specification", "href": "https://web.archive.org/web/20180825202128/https://tc39.github.io/ecma262/" }], "polyfills": ["es6shim", "weakmap"], "authors": ["Ron Waldon (@jokeyrhyme)"], "warnings": ["ECMAScript 6 is still a only a draft, so this detect may not match the final specification or implementations."], "tags": ["es6"] } !*/ /* DOC Check if browser implements ECMAScript 6 Map, Set, WeakMap and WeakSet */ Modernizr.addTest('es6collections', !!( window.Map && window.Set && window.WeakMap && window.WeakSet )); /*! { "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": "ES6 String", "property": "es6string", "notes": [{ "name": "unofficial ECMAScript 6 draft specification", "href": "https://web.archive.org/web/20180825202128/https://tc39.github.io/ecma262/" }], "polyfills": ["es6shim"], "authors": ["Ron Waldon (@jokeyrhyme)"], "warnings": ["ECMAScript 6 is still a only a draft, so this detect may not match the final specification or implementations."], "tags": ["es6"] } !*/ /* DOC Check if browser implements ECMAScript 6 String per specification. */ Modernizr.addTest('es6string', !!(String.fromCodePoint && String.raw && String.prototype.codePointAt && String.prototype.repeat && String.prototype.startsWith && String.prototype.endsWith && String.prototype.includes)); /*! { "name": "SVG", "property": "svg", "caniuse": "svg", "tags": ["svg"], "authors": ["Erik Dahlstrom"], "polyfills": [ "svgweb", "raphael", "amplesdk", "canvg", "svg-boilerplate", "sie", "dojogfx", "fabricjs" ] } !*/ /* DOC Detects support for SVG in `

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