I want the user to take that survey only once and want to prevent view source or inspect element to show up the src somehow. Making statements based on opinion; back them up with references or personal experience. Nada, great art. be used as a security restriction; this restriction may be modified in the future. Now I am trying to resurrect them. the secret response ", exposed to the receiving window through the event object. But be careful! density matrix. My link has a target=media attribute on it and the first video loads fine. I believe that their bad reputation should not prevent you from relying on them. Web resources and IFRAMEs aren't displayed using the Dynamics 365 for Outlook reading pane, however, they are supported in Dynamics 365 for tablets. Would you ever say "eat pig" instead of "eat pork"? hostname, or port of this window's document does not match that provided You can listen to them with the onload and onerror attribute respectively: Or if you can add the listeners to your iframe programmatically. Its best to be specific about the domains used for communications to prevent unwanted information discolusre/XSS attacks. When this option is selected, the IFRAME has the parameters set that are listed in the following table. Just remove unnecessary ) from postMessage link. Unable to postMessage from iframe in Lightning component back to parent? The best answers are voted up and rise to the top. When shake-hand message is received from CHILD, than PARENT window can send data to CHILD or proceed any other communication schema you want to implement. @RobertSussland well, I went back to my code today to try and strip it down to the minimum needed to demonstrate the error and well, I can't reproduce it today. JavaScript window postMessage method makes possible cross-origin communication between windows. You can specify whether all the parameters in the following table will be passed. For bidirectional communication we will use two native JavaScript functionalities: Lets have a closer look at both of them. How to check whether a string contains a substring in JavaScript? The most relevant answer I found was from this articleand todays conclusion seems to be: Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect. The best answers are voted up and rise to the top, Not the answer you're looking for? present and differs from the default port for the given protocol. Where should I put