javascript复制到粘贴板

本文主要是介绍javascript复制到粘贴板，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

<!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>
    <title>未命名頁面</title>

    <script type="text/javascript" language="javascript">
    function copyToClipboard(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");
                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);
        }
    }
    </script>

</head>
<body>
    <input id="Button1" type="button" value="复制到粘贴板" οnclick="copyToClipboard('复制到粘贴板');" />
</body>
</html>

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