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js跨域数据传输实例(双向)

date.html:放在127.0.0.3域名下

<!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" xml:lang="en">
<head>
 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
 <title>cross-domain demo by WYQ</title>
</head>
<body>
 <h3>this page from :<span id="host"></span></h3>
 <input type="text" value="" id="data" /><button id="btn" onclick="send();">提交</button>
 <ul>
  <li>firefox、chrome等高级浏览器采用html5 postMessage方法</li>
  <li>IE6 7等使用window.name方法</li>
  <li>支持双向跨域，在chrome 13、firefox6、IE6+测试通过</li>
  <li>window.name可以通过data加随机数方式，避免两次提交的数据相同，本例没做处理，所以如果不改变value值点击提交是不会触发alert的</li>
 </ul>
 <script type="text/javascript">
  document.getElementById('host').innerHTML = location.host;
  function send(){
   var val = document.getElementById('data').value;
   sendMessage(val);
  }
  (function(win, doc){
   var ifr = win.parent;
   
   var cb = function(json){
    alert(location.host+"  get msg:"+json);
   };
   var sendMessage = function(){
    if(win.postMessage){
     if (win.addEventListener) {
                  win.addEventListener("message",function(e){
      cb.call(win,e.data);
     },false);
              }else if(win.attachEvent) {
                  win.attachEvent("onmessage",function(e){
      cb.call(win,e.data);
     });
              }
     return function(data){
      ifr.postMessage(data,'*');
     };
    }else{
     var hash = '';
     
     setInterval(function(){
      if(win.name!==hash){
       hash = win.name;
       cb.call(win,hash);
      }
     },50);
     return function(data){
      ifr.name = data;
     };
    }
   }
   win.sendMessage = sendMessage();
  })(window, document);
  
 </script>
</body>
</html>

app.html：放在localhost域名下：

<!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" xml:lang="en">
<head>
 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
 <title>cross-domain demo by js8.in</title>
</head>
<body>
 <div style="100%;border:1px solid green;">
  <h3>this page from :<span id="host"></span></h3>
  <input type="text" value="" id="data" /><button id="btn" onclick="send();">提交</button>
 </div>
 
 <iframe id="iframeA" src="http://127.0.0.3/date.html" style="border:1px solid #ff6600;100%;height:300px;"></iframe>
 <script type="text/javascript">
  document.getElementById('host').innerHTML = location.host;
  function send(){
   var val = document.getElementById('data').value;
   sendMessage(val);
  }
  (function(win, doc){
   var ifr = doc.getElementById('iframeA').contentWindow;
   var cb = function(json){
    alert(location.host+" get msg:"+json);
   };
   var sendMessage = function(){
    if(win.postMessage){
     if (win.addEventListener) {
                  win.addEventListener("message",function(e){
      cb.call(win,e.data);
     },false);
              }else if(win.attachEvent) {
                  win.attachEvent("onmessage",function(e){
      cb.call(win,e.data);
     });
              }
     return function(data){
      ifr.postMessage(data,'*');
     };
    }else{
     var hash = '';
     
     setInterval(function(){
     
      if (win.name !== hash) {
       hash = win.name;
       cb.call(win, hash);
      }
     }, 50);
     return function(data){
      ifr.name = data;
     };
    }
   };
   win.sendMessage = sendMessage();
  })(window, document);
  
 
  
 </script>
</body>
</html>

JavaScript:全面解析Ajax跨站数据传输和iframe跨域名js调用

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原文地址：https://www.cnblogs.com/tinyphp/p/2856866.html