js复制页面内容到剪切板的实例代码

js复制内容到剪切版，代码如下：

<script type="text/javascript" language="javascript">
//复制到剪切板
function copyToClipBoard(s) {
//alert(s);
if (window.clipboardData) {
window.clipboardData.setData("Text", s);
alert("已经复制到剪切板！"+ "n" + s);
} else if (navigator.userAgent.indexOf("Opera") != -1) {
window.location = s;
} else if (window.netscape) {
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
} catch (e) {
alert("被浏览器拒绝！n请在浏览器地址栏输入'about:config'并回车n然后将'signed.applets.codebase_principal_support'设置为'true'");
}
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 = s;
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("已经复制到剪切板！" + "n" + s)
}
}
//edit by www.jb200.com
</script>