Walking the tree node on a page from another domain

[Claus Mygind]

I have been working with the TreeWalker. I want to load a page from another domain. I got that working fine. I store window.open() object in a global variable winRef.

Then I would like to walk the nodes and find an anchor that contains "seek/log" in it's href attribute.

Can that be done or is that a security violation and not permitted?

I load the winRef variable like this

 
winRef = window.open("http://www.otherSite.com" );
 

I have tried both of the following:

    var rootnode=winRef.document.getElementById("Form1")
    var walker=winRef.document.createTreeWalker(rootnode, NodeFilter.SHOW_ELEMENT, myfilter, false)
 

and

    var rootnode=winRef.getElementById("Form1")
    var walker=winRef.createTreeWalker(rootnode, NodeFilter.SHOW_ELEMENT, myfilter, false)
 

each time I get the error "Permission denied".


below is my tree walker code.

 function walkTheNodes()
 {
    //var rootnode=document.getElementById("Form1")
    var rootnode=winRef.getElementById("Form1")
    var walker=document.createTreeWalker(rootnode, NodeFilter.SHOW_ELEMENT, myfilter, false)
 
 
    //Step through and alert all child nodes
    while (walker.nextNode())
    alert(walker.currentNode.tagName) 
 
    var cHref = walker.currentNode;
    var cChk  = walker.currentNode.href;
 
    var i = walker.currentNode.href.indexOf("seek/log");
 
    if ( i != -1 )
    {
        alert(walker.currentNode.href);
    }else{
        alert("Did not find");
    }
 
    //Go back to the first child node of the collection and alert it
    walker.currentNode=rootnode //reset TreeWalker pointer to point to root node
}
 
myfilter=function(node){
if ( node.tagName=="A") //filter out INPUT
return NodeFilter.FILTER_ACCEPT
else
return NodeFilter.FILTER_SKIP
}
 

[acoder]

Yes, this is not going to be possible, but you can serve the page from your domain to avoid cross-domain problems.

[Claus Mygind]

Ok so how do I capture the page from the domain that is not mine and re-load it from my domain as you suggest?

[acoder]

See this link for some ideas. Although it is geared towards Ajax, the article is still relevant.

[Claus Mygind]

Thank you very much for the link. I have also read up on the proxy server idea. I will play around with that and post any success story if I have one. Opening up a proxy may be more of a security problem than I want to deal with to save one click on the mouse. But at least I can see how it is done.