JS/FLASH实现复制代码到剪贴板(兼容所有浏览器)

目前，如果使用javascript来写复制到剪贴板的代码，一般都是浏览器不兼容的。所以采用flash的方式，模拟一个层，再来复制，就可以做到全部浏览器都适用哦~

需要下载一个swf文件，和一个js文件。把这两个文件，和htm放到一起。
图示：

必须放在服务器端使用哦。
图示：

JS代码：

ZeroClipboard.js 
// Simple Set Clipboard System 
// Author: Joseph Huckaby 
var ZeroClipboard = { 
version: "1.0.7", 
clients: {}, // registered upload clients on page, indexed by id 
moviePath: 'ZeroClipboard.swf', // URL to movie 
nextId: 1, // ID of next movie 
$: function(thingy) { 
// simple DOM lookup utility function 
if (typeof(thingy) == 'string') thingy = document.getElementById(thingy); 
if (!thingy.addClass) { 
// extend element with a few useful methods 
thingy.hide = function() { this.style.display = 'none'; }; 
thingy.show = function() { this.style.display = ''; }; 
thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; }; 
thingy.removeClass = function(name) { 
var classes = this.className.split(/\s+/); 
var idx = -1; 
for (var k = 0; k < classes.length; k++) { 
if (classes[k] == name) { idx = k; k = classes.length; } 
} 
if (idx > -1) { 
classes.splice( idx, 1 ); 
this.className = classes.join(' '); 
} 
return this; 
}; 
thingy.hasClass = function(name) { 
return !!this.className.match( new RegExp("\\s*" + name + "\\s*") ); 
}; 
} 
return thingy; 
}, 
setMoviePath: function(path) { 
// set path to ZeroClipboard.swf 
this.moviePath = path; 
}, 
dispatch: function(id, eventName, args) { 
// receive event from flash movie, send to client 
var client = this.clients[id]; 
if (client) { 
client.receiveEvent(eventName, args); 
} 
}, 
register: function(id, client) { 
// register new client to receive events 
this.clients[id] = client; 
}, 
getDOMObjectPosition: function(obj, stopObj) { 
// get absolute coordinates for dom element 
var info = { 
left: 0, 
top: 0, 
width: obj.width ? obj.width : obj.offsetWidth, 
height: obj.height ? obj.height : obj.offsetHeight 
}; 
while (obj && (obj != stopObj)) { 
info.left += obj.offsetLeft; 
info.top += obj.offsetTop; 
obj = obj.offsetParent; 
} 
return info; 
}, 
Client: function(elem) { 
// constructor for new simple upload client 
this.handlers = {}; 
// unique ID 
this.id = ZeroClipboard.nextId++; 
this.movieId = 'ZeroClipboardMovie_' + this.id; 
// register client with singleton to receive flash events 
ZeroClipboard.register(this.id, this); 
// create movie 
if (elem) this.glue(elem); 
} 
}; 
ZeroClipboard.Client.prototype = { 
id: 0, // unique ID for us 
ready: false, // whether movie is ready to receive events or not 
movie: null, // reference to movie object 
clipText: '', // text to copy to clipboard 
handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor 
cssEffects: true, // enable CSS mouse effects on dom container 
handlers: null, // user event handlers 
glue: function(elem, appendElem, stylesToAdd) { 
// glue to DOM element 
// elem can be ID or actual DOM element object 
this.domElement = ZeroClipboard.$(elem); 
// float just above object, or zIndex 99 if dom element isn't set 
var zIndex = 99; 
if (this.domElement.style.zIndex) { 
zIndex = parseInt(this.domElement.style.zIndex, 10) + 1; 
} 
if (typeof(appendElem) == 'string') { 
appendElem = ZeroClipboard.$(appendElem); 
} 
else if (typeof(appendElem) == 'undefined') { 
appendElem = document.getElementsByTagName('body')[0]; 
} 
// find X/Y position of domElement 
var box = ZeroClipboard.getDOMObjectPosition(this.domElement, appendElem); 
// create floating DIV above element 
this.div = document.createElement('div'); 
var style = this.div.style; 
style.position = 'absolute'; 
style.left = '' + box.left + 'px'; 
style.top = '' + box.top + 'px'; 
style.width = '' + box.width + 'px'; 
style.height = '' + box.height + 'px'; 
style.zIndex = zIndex; 
if (typeof(stylesToAdd) == 'object') { 
for (addedStyle in stylesToAdd) { 
style[addedStyle] = stylesToAdd[addedStyle]; 
} 
} 
// style.backgroundColor = '#f00'; // debug 
appendElem.appendChild(this.div); 
this.div.innerHTML = this.getHTML( box.width, box.height ); 
}, 
getHTML: function(width, height) { 
// return HTML for movie 
var html = ''; 
var flashvars = 'id=' + this.id + 
'&width=' + width + 
'&height=' + height; 
if (navigator.userAgent.match(/MSIE/)) { 
// IE gets an OBJECT tag 
var protocol = location.href.match(/^https/i) ? 'https://' : 'http://'; 
html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="'+protocol+'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="'+width+'" height="'+height+'" id="'+this.movieId+'" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+ZeroClipboard.moviePath+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><param name="wmode" value="transparent"/></object>'; 
} 
else { 
// all other browsers get an EMBED tag 
html += '<embed id="'+this.movieId+'" src="'+ZeroClipboard.moviePath+'" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+width+'" height="'+height+'" name="'+this.movieId+'" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'" wmode="transparent" />'; 
} 
return html; 
}, 
hide: function() { 
// temporarily hide floater offscreen 
if (this.div) { 
this.div.style.left = '-2000px'; 
} 
}, 
show: function() { 
// show ourselves after a call to hide() 
this.reposition(); 
}, 
destroy: function() { 
// destroy control and floater 
if (this.domElement && this.div) { 
this.hide(); 
this.div.innerHTML = ''; 
var body = document.getElementsByTagName('body')[0]; 
try { body.removeChild( this.div ); } catch(e) {;} 
this.domElement = null; 
this.div = null; 
} 
}, 
reposition: function(elem) { 
// reposition our floating div, optionally to new container 
// warning: container CANNOT change size, only position 
if (elem) { 
this.domElement = ZeroClipboard.$(elem); 
if (!this.domElement) this.hide(); 
} 
if (this.domElement && this.div) { 
var box = ZeroClipboard.getDOMObjectPosition(this.domElement); 
var style = this.div.style; 
style.left = '' + box.left + 'px'; 
style.top = '' + box.top + 'px'; 
} 
}, 
setText: function(newText) { 
// set text to be copied to clipboard 
this.clipText = newText; 
if (this.ready) this.movie.setText(newText); 
}, 
addEventListener: function(eventName, func) { 
// add user event listener for event 
// event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel 
eventName = eventName.toString().toLowerCase().replace(/^on/, ''); 
if (!this.handlers[eventName]) this.handlers[eventName] = []; 
this.handlers[eventName].push(func); 
}, 
setHandCursor: function(enabled) { 
// enable hand cursor (true), or default arrow cursor (false) 
this.handCursorEnabled = enabled; 
if (this.ready) this.movie.setHandCursor(enabled); 
}, 
setCSSEffects: function(enabled) { 
// enable or disable CSS effects on DOM container 
this.cssEffects = !!enabled; 
}, 
receiveEvent: function(eventName, args) { 
// receive event from flash 
eventName = eventName.toString().toLowerCase().replace(/^on/, ''); 
// special behavior for certain events 
switch (eventName) { 
case 'load': 
// movie claims it is ready, but in IE this isn't always the case... 
// bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function 
this.movie = document.getElementById(this.movieId); 
if (!this.movie) { 
var self = this; 
setTimeout( function() { self.receiveEvent('load', null); }, 1 ); 
return; 
} 
// firefox on pc needs a "kick" in order to set these in certain cases 
if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) { 
var self = this; 
setTimeout( function() { self.receiveEvent('load', null); }, 100 ); 
this.ready = true; 
return; 
} 
this.ready = true; 
this.movie.setText( this.clipText ); 
this.movie.setHandCursor( this.handCursorEnabled ); 
break; 
case 'mouseover': 
if (this.domElement && this.cssEffects) { 
this.domElement.addClass('hover'); 
if (this.recoverActive) this.domElement.addClass('active'); 
} 
break; 
case 'mouseout': 
if (this.domElement && this.cssEffects) { 
this.recoverActive = false; 
if (this.domElement.hasClass('active')) { 
this.domElement.removeClass('active'); 
this.recoverActive = true; 
} 
this.domElement.removeClass('hover'); 
} 
break; 
case 'mousedown': 
if (this.domElement && this.cssEffects) { 
this.domElement.addClass('active'); 
} 
break; 
case 'mouseup': 
if (this.domElement && this.cssEffects) { 
this.domElement.removeClass('active'); 
this.recoverActive = false; 
} 
break; 
} // switch eventName 
if (this.handlers[eventName]) { 
for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) { 
var func = this.handlers[eventName][idx]; 
if (typeof(func) == 'function') { 
// actual function reference 
func(this, args); 
} 
else if ((typeof(func) == 'object') && (func.length == 2)) { 
// PHP style object + method, i.e. [myObject, 'myMethod'] 
func[0][ func[1] ](this, args); 
} 
else if (typeof(func) == 'string') { 
// name of function 
window[func](this, args); 
} 
} // foreach event handler defined 
} // user defined handler for event 
} 
};

html代码：

a.htm 
<html> 
<head> 
<title>Zero Clipboard Test</title> 
<style type="text/css"> 
body { font-family:arial,sans-serif; font-size:9pt; } 
.my_clip_button { width:150px; text-align:center; border:1px solid black; background-color:#ccc; margin:10px; padding:10px; cursor:default; font-size:9pt; } 
.my_clip_button.hover { background-color:#eee; } 
.my_clip_button.active { background-color:#aaa; } 
</style> 
</head> 
<body> 
<div id="d_clip_container" style="position:relative"> 
<div id="d_clip_button" class="my_clip_button"><b>Copy To Clipboard...</b></div> 
</div> 
<textarea id="myresource" class="clearfix" onChange="clip.setText(this.value)">我复制</textarea> 
<script type="text/javascript" src="ZeroClipboard.js"></script> 
<script language="JavaScript"> 
var clip = null; 
function $(id) { return document.getElementById(id); } 
function init() { 
clip = new ZeroClipboard.Client(); 
clip.setHandCursor( true ); 
clip.addEventListener('load', function (client) { 
debugstr("Flash movie loaded and ready."); 
}); 
clip.addEventListener('mouseOver', function (client) { 
// update the text on mouse over 
clip.setText( $('myresource').value ); 
}); 
clip.addEventListener('complete', function (client, text) { 
debugstr("Copied text to clipboard: " + text ); 
}); 
clip.glue( 'd_clip_button', 'd_clip_container' ); 
} 
setTimeout(function(){ 
init(); 
},1500); 
</script> 
</body> 
</html>

flash文件请自己到网上下载哈~