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easyXDM 看起来有一个很棒的消息传输系统，GIT 文档中的桥接示例过于复杂，涉及 3 或 4 个 HTML 文件。可以在同一个域上使用子窗口和父窗口进行简单的窗口到窗口通信，兼容 IE8 等吗？

帮助需要一个 easyXDM 专家 - （此代码不起作用）

<! doctype html>
<html>
 <head>
       <!-- index.html -->
   <title>postmessage Test</title>
       <script type="text/javascript" src="easyXDM.debug.js"                                                           </
script>
       <script type="text/javascript">
easyXDM.DomHelper.requiresJSON("json2.js");             </script>

   <script type="text/javascript">
       var target;

       target = window.open("http://localhost/child.html",'popupWindow');

       var socket = new easyXDM.Socket({
               swf: "easyxdm.swf",
               onMessage: function(message, origin){
                       alert("Received '" + message + "' from '" + origin + "'");
               }
       });
       </script>

 </head>
 <body>
       Parent Window<br/>
   <button class="send-button" onclick="socket.postMessage('Msg from
Parent');">Post message</button>

 </body>
</html>

<! doctype html>
<html>
 <head>
       <!-- child.html -->
   <title>postmessage Child</title>
       <script type="text/javascript" src="easyXDM.debug.js"                                                           </
script>
       <script type="text/javascript">
easyXDM.DomHelper.requiresJSON("json2.js");             </script>

   <script type="text/javascript">

       var socket = new easyXDM.Socket({
               remote: "http://localhost/",
               swf: "easyxdm.swf",
               onMessage: function(message, origin){
                       alert("Received '" + message + "' from '" + origin + "'");
               }
       });
       </script>

 </head>
 <body>
   Popup Window<br/>
   <button class="send-button" onclick="socket.postMessage('Msg from
child');">Post message</button>

 </body>
</html>
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