javascript - In Chrome, can't access any variables or functions of a child iframe, or of an iframe's parent -

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this similar this question, although bit broader.

i'm opening these pages locally, , sit in same folder.

index.html:

<!doctype html public "-//w3c//dtd html 4.01 transitional//en" "http://www.w3.org/tr/html4/loose.dtd"> <html lang="en">     <head>         <title>testindex</title>         <script type="text/javascript">             function init()             {                 alert("child.childvar: " + child.childvar); //works in ff, ie, not chrome                 alert("frames['child'].childvar: " + frames['child'].childvar); //works in ff, ie, not chrome                 alert("document.getelementbyid('child').contentwindow['childvar']: " + document.getelementbyid('child').contentwindow['childvar']); //works in ff, ie, not chrome                  child.childfunc(); //works in ff, ie, not chrome                 frames['child'].childfunc(); //works in ff, ie, not chrome                 document.getelementbyid('child').contentwindow['childfunc()']; //doesn't work in             }              var parentvar = 7;             function parentfunc()             {                 alert("in parentfunc");             }             window.onload = init;         </script>     </head>      <body>         <iframe id="child" name="child" src="child.html">your browser not support iframes</iframe>     </body> </html>

child.html:

<!doctype html public "-//w3c//dtd html 4.01//en" "http://www.w3.org/tr/html4/strict.dtd"> <html lang="en">     <head>         <title>testchild</title>         <script type="text/javascript">             function init()             {                 alert("parent.parentvar: " + parent.parentvar); //works in ff, ie, not chrome                  parent.parentfunc(); //works in ff, ie, not chrome             }              var childvar = 5;             function childfunc()             {                 alert("in childfunc");             }             window.onload = init;         </script>     </head>  <body>  </body> </html>

i can't seem achieve communication @ between page , iframe's content in chrome. did read answers question linked to, don't know userscripts/content scripts are, don't know how relevant questions mine.

i guess actual question is: how hell values iframe'd page parent page!?

apparently javascript inter-frame communication doesn't work when on local file system. put files on server , function expected.


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