Copy Code code as follows:
<body onload= "Javascript:setheight ();" >
<script>
function SetHeight () {
var dheight = document.documentElement.scrollHeight;
var t = document.createelement ("div");
t.innerhtml = ' <iframe id= ' kxiframeagent "src=" http://rest.kaixin001.com/api/agent.html# ' +dheight+ ' "scrolling=" Yes "height=" 0px "width=" 0px "></iframe>";
Document.documentElement.appendChild (T.firstchild);
}
</script>
I think about how to solve the Cross-domain Ah! Then went to the Internet to search for a sudden epiphany
Specifically as follows I'm copying it. Everyone focus on understanding the realization of the idea:
question:
A domain name under the page a.htm through an iframe embedded in the B-Domain page b.html, because the size of the b.html is unpredictable and will change, so need to a.htm in the iframe adaptive size.
The nature of the problem:
JS Cross-domain problem, because to control the size of the IFRAME in the a.htm must first read the size of the b.html, A, B does not belong to the same domain, JS access is limited to read the size of the b.html.
Solution:
First, the premise is that A,b is a cooperative relationship, b.html can be introduced into a provided JS
First, the b.html is introduced into the a.html via IFRAME.
Copy Code code as follows:
<iframe id= "aiframe" height= "0" width= "0" src= "http://www.b.com/html/b.html" frameborder= "no" border= "0px" Marginwidth= "0" marginheight= "0" scrolling= "no" allowtransparency= "yes" ></iframe>
<iframe id= "aiframe" height= "0" width= "0" src= "http://www.b.com/html/b.html" frameborder= "no" border= "0px" Marginwidth= "0" marginheight= "0" scrolling= "no" allowtransparency= "yes" ></iframe>
b in B.html, the introduction of a provided JS file
HTML code
Copy Code code as follows:
<script language= "javascript" type= "Text/javascript" src= "Http://www.a.com/js/a.js" ></script>
The JS first reads the width and height of the b.html, and then creates a iframe,src for the same domain as the intermediate proxy page a_proxy.html, read the wide and high settings into SRC hash inside
HTML code
Copy Code code as follows:
<iframe id= "Iframeproxy" height= "0" width= "0" src= "http://www.a.com/html/a_proxy.html#width|height" style= " Display:none "></iframe>
A_proxy.html is a good intermediate proxy page under a domain, which is responsible for reading the values of width and height in the Location.hash, and then setting the width and height of the IFRAME in the a.html under the same field.
JS Code
Copy Code code as follows:
var pparentframe = parent.parent.document.getElementById ("Aiframe");
var Locationurlhash = parent.parent.frames["Aiframe"].frames["Iframeproxy"].location.hash;
PParentFrame.style.width = Locationurlhash.split ("#") [1].split ("|") [0]+ "px";
PParentFrame.style.height = Locationurlhash.split ("#") [1].split ("|") [1]+ "px";
var pparentframe = parent.parent.document.getElementById ("Aiframe");
var Locationurlhash = parent.parent.frames["Aiframe"].frames["Iframeproxy"].location.hash;
PParentFrame.style.width = Locationurlhash.split ("#") [1].split ("|") [0]+ "px";
PParentFrame.style.height = Locationurlhash.split ("#") [1].split ("|") [1]+ "px";
In this way, the IFRAME in the a.html is adaptive to the width and height of the b.html.
Other problems like JS Cross-domain operation can be solved by this idea
