It’s true that ordinary javascript cannot access iframe content, that’s on a different domain, for security reasons. However, this by no means stops userscripts in Chrome, Tampermonkey or Greasemonkey. You can process iframed content in a userscript because Chrome (and Firefox) process iframe’d pages just as if they were the main page. Accounting for that, … Read more
You can do it! Read here for more info You can affect the document with contains the iframe by setting and getting variables from the window element: // normally you use… var whatever = “value”; // use the window object instead, which is shared // between the iframe and the parent window.whatever = “value”; The … Read more
This is a known bug in Opera. In addition to the above ideas for workarounds, you may want to play with something like this: var clone=document.documentElement.cloneNode(true) var win=window.open(‘about:blank’); win.document.replaceChild(clone, win.document.documentElement); win.print(); I have not tested this but it should create a copy of the page in a popup window and print it, without having to … Read more
It is not possible to do this because of the browser’s security model. If it was possible, that would be a security problem and would have to be fixed. Although letting the embedding site know the height of a third party webpage when embedded in the page seems harmless, this can leak information to the … Read more
CORS doesn’t let you do that, but you can use cross-document messaging to send strings between iframes and their parent windows even on different domains, and use that to communicate. Most browsers support this although Internet Explorer’s way differs from the others‘. Assuming what you want is to have the iframe announce to the parent … Read more
a bug in IE (surely not!?!) Hard to believe, I know, but there we are. Historically(*), setting the name attribute has many problems in IE. It tends to only partially hold. For example on form field names, it doesn’t affect the form.elements[name] lookup like it should. This appears to be another case where setting the … Read more
top.location.href But that will only work if both pages (the iframe and the main page) are being served from the same domain.
I wonder if it would require some significant changes in both frontend and backend code, but have you considered using AJAX? The workflow would be something like this: user sends AJAX request to start file generating and frontend constantly polls it’s status from the server, when it’s done – show a download link to the … Read more
To get the iframe location using jQuery: alert( $(‘iframeId’).contents().get(0).location.href );
var root= document.compatMode==’BackCompat’? document.body : document.documentElement; var isVerticalScrollbar= root.scrollHeight>root.clientHeight; var isHorizontalScrollbar= root.scrollWidth>root.clientWidth; This detects whether there is a need for a scrollbar. For the default of iframes this is the same as whether there is a scrollbar, but if scrollbars are forced on or off (using the ‘scrolling=”yes”https://stackoverflow.com/”no”’ attribute in the parent document, or CSS … Read more