复制到系统剪贴板之IE,ff兼容版

http://www.w3c-cn.com/article.asp?id=88

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<script type="text/javascript">
// <![CDATA[
function copy_clip(copy){
if (window.clipboardData){
window.clipboardData.setData("Text", copy);}
else if (window.netscape){
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=copy;
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);}
alert("已复制"+copy)
return false;
}
// ]]>
</script>
<h1>请另存代码测试</h1>
<input type="text" id="ff" value="我要复制的东西" /><button onclick="copy_clip(document.getElementById('ff').value)">复制
</button>

FF下需设一下安全
第一步.在Firefox浏览器的地址栏中输入 about:config
第二步.将 signed.applets.codebase_principal_support 的值从 false 更新为 true 。

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