Framework elements-cross-domain access-window.name

Page A: page B, can you send me a data?

Page B: Well, we are not in the same domain because of the web security issue, so the browser prohibits me from transmitting data directly to you.

Page A: Is there any way to solve this problem?

Page B: You can use Window.name.

Page A: What do you need me to do?

Page b:1. You first create an IFRAME node dynamically;

2. Set node properties src point me;

3. I will set window.name = ' B ';

4. Then you re-set the properties of the node iframe src Point and you are in the same domain under the sibling page C;

5. Although the value of the attribute src is changed, the value of window.name does not change, or B, so you can get data b directly from page C.

Page A: See, this becomes the same domain access from cross-domain access.

Page B: Yes. Yes, the page C here does not have the actual content, just play a role of the bridge Oh.

<!--page a--><script> var state = 0;    IFR = document.createelement (' iframe ');    IFR.SRC = ' http://b.com/b.html ';    if (ifr.attachevent) {        ifr.attachevent (' onload ', LOADFN);    }     else     {        ifr.onload  = LOADFN;    }    function Loadfn () {        if (state = = = 1) {            var data = Ifr.contentWindow.name;             alert (data);        }         else if (state = = = 0)         {state            = 1;            Ifr.contentWindow.location = "http://a.com/c.html";        }      };    Document.body.appendChild (IFR); </script>

　

<!--page B--><script>window.name = ' B ';</script>

　　

　

　　

Framework elements-cross-domain access-window.name