Firefox实现IE下的复制粘贴功能 - CSDN

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问题内容：Firefox实现IE下的复制粘贴功能
原讨论链接：http://community.csdn.net/expert/topicview1.asp?id=5115440
所属论坛：JavaScript 审核组：WEB开发
提问者：wab81923 解决者：brothercat
感谢：
关键字：JavaScript Web 开发网址 input value type return txt var clip components.classes
答案：
function cpylink(btn,obj)
{
therange=obj.createTextRange();
therange.execCommand("copy");
btn.value = "       复制完毕       ";
}

<input type="hidden" id="myurl" name="myurl" size="10" value='www.zyqRadio.com'>
<input type="button" value="     复制本站网址     " name="B3" onclick="javascript:cpylink(this,document.getElementById('myurl'))" >
---------------------------------------------------------------

FF里这个问题比较麻烦，因为大部分情况FF里处于安全考虑都会禁用复制功能，所以首先你要在FF浏览器的地址栏里输入：about:config  设置"signed.applets.codebase_principal_support"选项的值为true，然后照下面代码来写：

===============================================================================
<html>

<head>
<title>兼容的复制功能</title>
<script>
function copylink(btn,inputtxt)
{
  var therange=inputtxt.value;
  copyToClipboard(therange);
  btn.value = "       复制完毕       ";
}
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("此操作被浏览器拒绝！\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);
    }
    return true;
}
</script>
</head>

<body>
<input type="hidden" id="hiddenurl" size="10" value="www.csdn.net">
<input type="button" value="     复制本站网址     " name="B3" onclick="javascript:copylink(this,document.getElementById('hiddenurl'))" >
</body>

</html>
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