JS复制内容，兼容所有主流浏览器

// 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', // 这里是上面那个FLASH的相对地址
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) {
        	var newReg = new RegExp("\\s*" + name + "\\s*");
            return !!this.className.match(newReg);
        };
    }
    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, // movie is ready to receive events or not
movie: null, // reference to movie object
clipText: '', // text to copy to clipboard
handCursorEnabled: true, // 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]) {
    	var len = this.handlers[eventName].length;
        for (var idx = 0, 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
}
 
};

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<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>
	<script type="text/javascript" src="ZeroClipboard.js"></script>
	<script type="text/javascript">
		var clip = null;
 
		function $(id) { return document.getElementById(id); }
 
		function init() {
			clip = new ZeroClipboard.Client();
			clip.setHandCursor( true );
 
			clip.addEventListener('load', my_load);
			clip.addEventListener('mouseOver', my_mouse_over);
			clip.addEventListener('complete', my_complete);
 
			clip.glue( 'd_clip_button' );
		}
 
		function my_load(client) {
			debugstr("Flash movie loaded and ready.");
		}
 
		function my_mouse_over(client) {
			// we can cheat a little here -- 
			// update the text on mouse over
			clip.setText( $('fe_text').value );
		}
 
		function my_complete(client, text) {
			debugstr("Copied text to clipboard: " + text );
		}
 
		function debugstr(msg) {
			var p = document.createElement('p');
			p.innerHTML = msg;
			$('d_debug').appendChild(p);
		}
	</script>
</head>
 
<body onLoad="init()">
	<h1>Zero Clipboard Test</h1>
 
	<p><script>
	document.write("Your browser: " + navigator.userAgent);
    </script></p>
	<table width="100%">
    <tr>
    <td width="50%" valign="top">
    <!-- Upload Form -->
    <table>
        <tr>
        <td align="right"><b>Text:</b></td>
 
        <td align="left">
        <textarea id="fe_text" cols=50 rows=5 onChange="clip.setText(this.value)">
        Copy me!</textarea>
        </td>
        </tr>
    </table>
    <br/>
    <div id="d_clip_button" class="my_clip_button">
    <b>Copy To Clipboard...</b>
    </div>
    </td>
    <td width="50%" valign="top">
        <!-- Debug Console -->
 
        <div id="d_debug" style="border:1px solid #aaa; padding: 10px; font-size:9pt;">
            <h3>Debug Console:</h3>
        </div>
    </td>
    </tr>
	</table>
 
	<br/><br/>
	You can paste text here if you want, to make sure it worked:<br/>
 
	<textarea id="testarea" cols=50 rows=10></textarea><br/>
	<input type=button value="Clear Test Area" onClick="$('testarea').value = '';"/>
</body>
</html>