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https://blogs.msdn.microsoft.com/ieinternals/2009/09/15/html5-implementation-issues-in-ie8-and-later/
Sep 15, 2009 · IE8 introduced support for some of the more stable features in the HTML5 spec. However, web developers have reported some problematic scenarios in IE8’s support for these features, as described below. 1. postMessage only works for IFRAMES/FRAMES The HTML5 postMessage function provides a great way for mutually distrusting documents (even cross-domain) to communicate …
https://stackoverflow.com/questions/13830480/ie8-9-window-postmessage-not-working-but-why
The .postMessage method works, you just need to understand how it works from IE8 and up. Unfortunately, for IE8 and IE9 it will not do what you're seeking (though it does in IE10). While you can send messages between frames in IE8/9, you cannot send messages to a separate window. There is a work-around that works in some instances.
https://medium.com/@jakob/window-postmessage-and-ie8-9-4a376b9dffe7
Mar 15, 2015 · window.postMessage & IE8, 9. ... On Medium, smart voices and ... Get unlimited access to the best stories on Medium — and support writers while you’re at it. Just $5/month. Upgrade.
https://github.com/IdentityModel/oidc-client-js/issues/156
Oct 17, 2016 · I can't get the sample IdentityServer.JsWalkthrough to work on IE (right now v11). Once the popup appears and I enter credentials and give my consent, the popup just keeps showing the "popup.html" page used for the signinPopupCallback(). Is it possible that IE doesn't support postMessage between windows and tabs? Any known workaround for this?
https://www.windowsphoneinfo.com/threads/ie-11-not-supporting-window-parent-postmessage.159728/
Feb 05, 2019 · Windows 10: IE 11 not supporting window.parent.postMessage. Discus and support IE 11 not supporting window.parent.postMessage in Microsoft Windows 10 Store to solve the problem; Hi, In IE 11, window.parent.postmessage is not working. I am trying to set the access token in iframe sign in and sent it to parent window.
https://social.msdn.microsoft.com/Forums/ie/en-US/5893dd48-3918-4ef2-ad2f-cfeb960f7c63/ie9-navigation-of-frame-tree-for-postmessage-support
Jan 28, 2011 · I am having trouble performing cross-domain message passing with .postMessage in IE9, which I suspect is caused by the frame navigation policy. In particular I have a setup where two trusted pages are iframed in an untrusted intermediary. In IE8 (and other browsers) I can provide a secure ... · The setTimout should obviously have had parameters the ...
https://davidwalsh.name/window-postmessage
Nov 03, 2010 · One of the little known HTML5 APIs is the window.postMessage API. window.postMessage allows for sending data messages between two windows/frames across domains. Essentially window.postMessage acts as cross-domain AJAX without the server shims. Let's take a look at how window.postMessage works and how you can use it today in Firefox, IE8+, Opera, Safari, and …
https://blog.teamtreehouse.com/cross-domain-messaging-with-postmessage
Sep 12, 2013 · Browser Support For postMessage. Support for postMessage() has been around in browsers for some time now. Internet Explorer has included support since version 8 but it’s worth noting that IE8 and IE9 only support postMessage() for communicating between a document and an iframe, support for cross-window/tab messaging arrived in IE10.
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