Today, I saw a post in the Forum
In Chrome, The contentWindow of IFRAME cannot be obtained.
If there is no cross-origin, this is impossible, and it is only possible to obtain it, so I wrote the following two test pages.
Page:
<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <br/> <HTML xmlns = "http://www.w3.org/1999/xhtml"> <br/> <pead> <br/> <meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8 "/> <br/> <title> untitled document </title> <br/> <MCE: style type =" text/CSS "> <! -- <Br/> * {padding: 0; margin: 0 ;}</P> <p> --> </MCE: style> <style type = "text/CSS" mce_bogus = "1"> * {padding: 0; margin: 0 ;} <br/> </style> <br/> </pead> <br/> <body> <br/> <MCE: script Type = "text/JavaScript"> <! -- <Br/> function show () {<br/> VaR _ IFRAME = document. getelementbyid ('A'); <br/> _ IFRAME. contentWindow. B (); <br/>}< br/> function a () {<br/> alert ('page '); <br/>}< br/> // --> </MCE: SCRIPT> <br/> <IFRAME id = "AA" name = "AA" src = "4.html" mce_src = "4.html" frameborder = "0" scrolling = "no" width = "100%" Height = "200"> </iframe> <br/> <input type = "button" value = "click" onclick = "show () "/> <br/> </body> <br/> </ptml>
Page B:
<! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <br/> <HTML xmlns = "http://www.w3.org/1999/xhtml"> <br/> <pead> <br/> <meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8 "/> <br/> <title> untitled document </title> <br/> <MCE: style type =" text/CSS "> <! -- <Br/> * {padding: 0; margin: 0 ;}< br/> --> </MCE: style> <style type = "text/CSS" mce_bogus = "1"> * {padding: 0; margin: 0 ;} </style> <br/> </pead> <br/> <body> <br/> <MCE: Script Type = "text/JavaScript"> <! -- <Br/> (function () {<br/> parent. window. A (); <br/>}) (); <br/> function B () {<br/> alert ('page B '); <br/>}< br/> // --> </MCE: SCRIPT> <br/> </body> <br/> </ptml> <br/>
The following browsers are tested: ff3.6, IE6, opera10, safair, and chrome.
Except for the last chrome, all others can run normally and get the correct result.
Speechless...
So I opened
Chrome's Js Controller showed a JS error:
Unsafe JavaScript attempt to access frame with URL File: // D:/test/4.html
From frame with URL File: // D:/test/3.html
. Domains, protocols and ports must match.
It means:
Javascript between page 3.html and page 4.html is insecure. Domain,
Protocol and Port
Must match
.
You say you are dizzy...
When the browser opens the page 3.html directly in the browser (url = "file: // D:/test/3.html"), the 4.html in the same folder as 3.html is in the same domain,
Chrome does not recognize it.
So I had to go to IIS which had been left aside for a long time.
Enter http: // localhost/test/3.html in the browser
Test passed...
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