学步园

<audio><br /> return !!document.createElement('audio').canPlayType;<br /> <audio> in MP3 format<br /> var a = document.createElement('audio');<br /> return !!(a.canPlayType && a.canPlayType('audio/mpeg;').replace(/no/, ''));<br /> <audio> in Vorbis format<br /> var a = document.createElement('audio');<br /> return !!(a.canPlayType && a.canPlayType('audio/ogg; codecs="vorbis"').replace(/no/, ''));<br /> <audio> in WAV format<br /> var a = document.createElement('audio');<br /> return !!(a.canPlayType && a.canPlayType('audio/wav; codecs="1"').replace(/no/, ''));<br /> <audio> in AAC format<br /> var a = document.createElement('audio');<br /> return !!(a.canPlayType && a.canPlayType('audio/mp4; codecs="mp4a.40.2"').replace(/no/, ''));<br /> <canvas><br /> return !!document.createElement('canvas').getContext;<br /> <canvas> text API<br /> var c = document.createElement('canvas');<br /> return c.getContext && typeof c.getContext('2d').fillText == 'function';<br /> <command><br /> return 'type' in document.createElement('command');<br /> <datalist><br /> return 'options' in document.createElement('datalist');<br /> <details><br /> return 'open' in document.createElement('details');<br /> <device><br /> return 'type' in document.createElement('device');<br /> <form> constraint validation<br /> return 'noValidate' in document.createElement('form');<br /> <iframe sandbox><br /> return 'sandbox' in document.createElement('iframe');<br /> <iframe srcdoc><br /> return 'srcdoc' in document.createElement('iframe');<br /> <input autofocus><br /> return 'autofocus' in document.createElement('input');<br /> <input placeholder><br /> return 'placeholder' in document.createElement('input');<br /> <input type="color"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'color');<br /> return i.type !== 'text';<br /> <input type="email"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'email');<br /> return i.type !== 'text';<br /> <input type="number"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'number');<br /> return i.type !== 'text';<br /> <input type="range"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'range');<br /> return i.type !== 'text';<br /> <input type="search"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'search');<br /> return i.type !== 'text';<br /> <input type="tel"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'tel');<br /> return i.type !== 'text';<br /> <input type="url"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'url');<br /> return i.type !== 'text';<br /> <input type="date"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'date');<br /> return i.type !== 'text';<br /> <input type="time"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'time');<br /> return i.type !== 'text';<br /> <input type="datetime"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'datetime');<br /> return i.type !== 'text';<br /> <input type="datetime-local"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'datetime-local);<br /> return i.type !== 'text';<br /> <input type="month"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'month');<br /> return i.type !== 'text';<br /> <input type="week"><br /> var i = document.createElement('input');<br /> i.setAttribute('type', 'week');<br /> return i.type !== 'text';<br /> <meter><br /> return 'value' in document.createElement('meter');<br /> <output><br /> return 'value' in document.createElement('output');<br /> <progress><br /> return 'value' in document.createElement('progress');<br /> <time><br /> return 'valueAsDate' in document.createElement('time');<br /> <video><br /> return !!document.createElement('video').canPlayType;<br /> <video> captions<br /> return 'track' in document.createElement('track');<br /> <video poster><br /> return 'poster' in document.createElement('video');<br /> <video> in WebM format<br /> var v = document.createElement('video');<br /> return !!(v.canPlayType && v.canPlayType('video/webm; codecs="vp8, vorbis"').replace(/no/, ''));<br /> <video> in H.264 format<br /> var v = document.createElement('video');<br /> return !!(v.canPlayType && v.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"').replace(/no/, ''));<br /> <video> in Theora format<br /> var v = document.createElement('video');<br /> return !!(v.canPlayType && v.canPlayType('video/ogg; codecs="theora, vorbis"').replace(/no/, ''));<br /> contentEditable<br /> return 'isContentEditable' in document.createElement('span');<br /> Cross-document messaging<br /> return !!window.postMessage;<br /> Drag-and-drop<br /> return 'draggable' in document.createElement('span');<br /> File API<br /> return typeof FileReader != 'undefined';<br /> Geolocation<br /> return !!navigator.geolocation;<br /> History<br /> return !!(window.history && window.history.pushState && window.history.popState);<br /> Local storage<br /> return ('localStorage' in window) && window['localStorage'] !== null;<br /> Microdata<br /> return !!document.getItems;<br /> Offline web applications<br /> return !!window.applicationCache;<br /> Server-sent events<br /> return typeof EventSource !== 'undefined';<br /> Session storage<br /> try {<br /> return ('sessionStorage' in window) && window['sessionStorage'] !== null;<br /> } catch(e) {<br /> return false;<br /> }<br /> SVG<br /> return !!(document.createElementNS && document.createElementNS('http://www.w3.org/2000/svg', 'svg').createSVGRect);<br /> SVG in text/html<br /> var e = document.createElement('div');<br /> e.innerHTML = '<svg></svg>';<br /> return !!(window.SVGSVGElement && e.firstChild instanceof window.SVGSVGElement);<br /> WebSimpleDB<br /> return !!window.indexedDB;<br /> Web Sockets<br /> return !!window.WebSocket;<br /> Web SQL Database<br /> return !!window.openDatabase;<br /> Web Workers<br /> return !!window.Worker;<br /> Undo<br /> return typeof UndoManager !== 'undefined'; 

参考地址：www.html5test.com