支持ie与FireFox的剪切板操作代码

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<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<title>支持ie与FireFox的剪切板代码</title> 
<script type="text/javascript"> 
function setCopy(_sTxt){ 
try{ 
if(window.clipboardData){ 
window.clipboardData.setData("Text", _sTxt); 
} else if(window.netscape) {//FireFox搞得真复杂呀 
netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect'); 
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard); 
if(!clip) return; 
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable); 
if(!trans) return; 
trans.addDataFlavor('text/unicode'); 
var str = new Object(); 
var len = new Object(); 
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString); 
var copytext = _sTxt; 
str.data = copytext; 
trans.setTransferData("text/unicode", str, copytext.length*2); 
var clipid = Components.interfaces.nsIClipboard; 
if (!clip) return false; 
clip.setData(trans, null, clipid.kGlobalClipboard); 
} 
}catch(e){} 
} 
</script> 
</head> 
<body> 
<input type="button" onclick="setCopy('hello');" value="复制" /> 
<div> 
Firefox/3.0.14下可以运行<br /> 
Firefox/3.5.3下无效<br /> 
不过多考虑这一块了。 
</div> 
</body> 
</html>

下面是ie firefox 读取剪切板中的信息的方法

复制代码代码如下:

function getClipboard() 
{ 
if (window.clipboardData) 
{ 
return (window.clipboardData.getData('text')); 
} 
else 
{ 
if (window.netscape) 
{ 
try 
{ 
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
var clip = Components.classes["@mozilla.org/widget/clipboard;1"].createInstance(Components.interfaces.nsIClipboard); 
if (!clip) 
{ 
return; 
} 
var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable); 
if (!trans) 
{ 
return; 
} 
trans.addDataFlavor("text/unicode"); 
clip.getData(trans, clip.kGlobalClipboard); 
var str = new Object(); 
var len = new Object(); 
trans.getTransferData("text/unicode", str, len); 
} 
catch (e) 
{ 
alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试，相对路径为firefox根目录/greprefs/all.js"); 
return null; 
} 
if (str) 
{ 
if (Components.interfaces.nsISupportsWString) 
{ 
str = str.value.QueryInterface(Components.interfaces.nsISupportsWString); 
} 
else 
{ 
if (Components.interfaces.nsISupportsString) 
{ 
str = str.value.QueryInterface(Components.interfaces.nsISupportsString); 
} 
else 
{ 
str = null; 
} 
} 
} 
if (str) 
{ 
return (str.data.substring(0, len.value / 2)); 
} 
} 
} 
return null; 
} 

下面是 ie,firefox下写入剪切板的代码

复制代码代码如下:

copy2Clipboard=function(txt){ 
    if(window.clipboardData){ 
window.clipboardData.clearData(); 
        window.clipboardData.setData("Text",txt); 
    } 
    else if(navigator.userAgent.indexOf("Opera")!=-1){ 
        window.location=txt; 
    } 
    else if(window.netscape){ 
        try{ 
            netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); 
        } 
        catch(e){ 
            alert("您的firefox安全限制限制您进行剪贴板操作，请打开'about:config'将signed.applets.codebase_principal_support'设置为true'之后重试，相对路径为firefox根目录/greprefs/all.js"); 
            return false; 
        } 
        var clip=Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard); 
        if(!clip)return; 
        var trans=Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable); 
        if(!trans)return; 
        trans.addDataFlavor('text/unicode'); 
        var str=new Object(); 
        var len=new Object(); 
        var str=Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString); 
        var copytext=txt;str.data=copytext; 
        trans.setTransferData("text/unicode",str,copytext.length*2); 
        var clipid=Components.interfaces.nsIClipboard; 
        if(!clip)return false; 
        clip.setData(trans,null,clipid.kGlobalClipboard); 
    } 
}