错误：拒绝访问属性“文档”的权限

Question

I am continuously getting the error "Error: Permission denied to access property 'document'" while i have already define in my X-FRAME options to allow the other domain, like this..

 <?php
        header('X-Frame-Options: ALLOW-FROM http://mydomain.com'); 
    ?>

Below is the header of iframe request, clearly shows i have defined to allow the domain to access the iframe but not working. All i want is to resize the iframe using javascript.

Here is my javascript code to resize the iframe height.

<iframe src="http://mydomain.com/xxx/yyy" id="idIframe" onload="iframeLoaded();" allowtransparency="true" frameborder="0" width="100%" scrolling="no"></iframe>
<script type="text/javascript">
function iframeLoaded() {
    var iFrameID = document.getElementById('idIframe');
    if(iFrameID) {
          iFrameID.height = "";
          if(iFrameID.contentWindow.document.body.scrollHeight < 500) {
              iFrameID.height = "500px";
          } else {
              iFrameID.height = iFrameID.contentWindow.document.body.scrollHeight + "px";
          }
    }   
}
</script>

How can i do this? Please suggest.

Answer 1

I very recently had this issue myself. Finally I solved it with the postMessage method.

1. In the document included to the iFrame I check whether it's actually running from an iFrame.

    function inIframe(){ if(top != self){ var contentHeight = $('#myIframeContent').height(); //Just this part I did with jQuery as I was sure that the document uses it postSize(contentHeight); } } 

2. If the document is running within an iFrame, call a function that we will call postSize.

    function postSize(height){ var target = parent.postMessage ? parent : (parent.document.postMessage ? parent.document : undefined); if(typeof target != "undefined" && document.body.scrollHeight){ target.postMessage(height, "*"); } } 

3. Add the following code to the document that includes your iFrame

    function receiveSize(e){ if(e.origin === "http://www.mywebsite.net"){ var newHeight = e.data + 35; document.getElementById("myIframeID").style.height = newHeight + "px"; } } window.addEventListener("message", receiveSize, false); 

Unfortunately I cannot remember the exact sources of all this as I was viewing a lot of different solutions here on Stackoverflow, but also different websites. But this solution works good for me.

Cheers

Answer 2

Not sure why the other solutions use an iFrame ID. It should also work without:

Page within the iFrame which sends a message to outside:

<script>
     parent.postMessage('your message', '*');
</script>

Parent frame:

window.addEventListener("message", receiveMessage, false);

function receiveMessage(event)
{
  console.log('Message: ',  event.data);
}

Answer 3

更新compatability.js到最新版本为我修复了它。