Using an Ohm Meter to test for bonding of a subpanel. What was the actual cockpit layout and crew of the Mi-24A? The iframe element (short for inline frame) is probably among the oldest HTML tags and was introduced in 1997 with HTML 4.01 by Microsoft Internet Explorer. the targetOrigin argument be "*". Its best to be specific about the domains used for communications to prevent unwanted information discolusre/XSS attacks. LoL. A curated periodical featuring thoughts, opinions, and tools for building a better digital world. Thankfully, you can blacklist or whitelist specific features. Hi, thanks for this guide, really interesting. In the controller for my Lightning component, I can get a reference to the iframe contentWindow and successfully postMessage into the iframe. All the parameters in the following table are passed if the IFRAME or web resource is configured by using the Pass record object-type code and unique identifier as parameters option. rev2023.4.21.43403. the secret response ", exposed to the receiving window through the event object. I guess this tweaking some kind of attribute I need to use, but I cant hack it. Well, I'm not saying you didn't see the error after calling postMessage, only that postMessages aren't going to generate the SOP violation that is being reported. From the parent to the iframe Send the message from the parent element: const myiframe = the structured clone JS console is giving me nothing, not a single error, still nothing is happening : the frames don't want to communicate.