【备忘录】javascript 复制到剪切板

/**
 * 兼容Ie & Firefox 的CopyToClipBoard
 */
function copyToClipBoard(txt) {
    if (window.clipboardData) { // IE
        window.clipboardData.clearData();
        window.clipboardData.setData("Text", txt);
    } else if (window.netscape) { // FF
        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 = 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);
    } else { // others
        alert("您的浏览器不支持此功能，请使用ctrl + C或者右键进行复制")
    }
}

or

Clippy

<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
        width="110"
        height="14"
        id="clippy" >
<param name="movie" value="/flash/clippy.swf"/>
<param name="allowScriptAccess" value="always" />
<param name="quality" value="high" />
<param name="scale" value="noscale" />
<param NAME="FlashVars" value="text=#{text}">
<param name="bgcolor" value="#{bgcolor}">
<embed src="/flash/clippy.swf"
       width="110"
       height="14"
       name="clippy"
       quality="high"
       allowScriptAccess="always"
       type="application/x-shockwave-flash"
       pluginspage="http://www.macromedia.com/go/getflashplayer"
       FlashVars="text=#{text}"
       bgcolor="#{bgcolor}"
/>
</object>