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