调试易

<textarea id="h1"></textarea> 另一个是
<textarea id="h2"></textarea><input id="btnhadnle" type="button" value="复制"/><script type="text/javascript">
var btnClick=document.getElementById("btnhadnle"); 
if(window.attachEvent){
    btnClick.attachEvent("onclick",objCopy);
}else if(window.addEventListener){
    btnClick.addEventListener("click",objCopy);
}
function objCopy(){
    var obj=document.getElementById("h1"); 
    textareaVal1 = obj.value;     var obj2=document.getElementById("h2"); 
    textareaVal2 = obj2.value; 
    textareaVal = textareaVal1+textareaVal2;
    copyToClipBoard(textareaVal);
}
function copyToClipBoard(s){
    //alert(s);
    if(window.clipboardData){
       window.clipboardData.setData("Text",s);
       alert("已经复制到剪切板！"+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)  
    }
}</script>