JS 複製到剪貼板

JS 複製到剪貼板

/*
 * 複製到剪貼板
 * 
 * */

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) {   
              showAlert("被瀏覽器拒絕！\n請在瀏覽器地址欄輸入'about:config'並回車\n然後將'signed.applets.codebase_principal_support'設置爲'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);   
         showMessage("複製成功！");
    }else if(window.navigator.userAgent.indexOf("Chrome") !== -1 ){
    	var dialog = $("#sanwn_clipboardDialog");
    	if(dialog.length==0){
    		var text = "<div id='xxx_clipboardDialog' title='請按Ctrl+C複製內容到剪貼板'><input type='text' id='sanwn_clipboardTxt' value='"+txt+"'></div>";
        	$("body").append( $(text));	
        	$("#sanwn_clipboardDialog").omDialog({
                    autoOpen: false,
                    height: 140,
                    modal: true
             });
        	dialog =$( "#sanwn_clipboardDialog");
    	}
    	$("#sanwn_clipboardTxt").val(txt);
    	
    	$("#sanwn_clipboardDialog").omDialog("open");
    	document.getElementById("sanwn_clipboardTxt").select();
    }
}