Iframe postmessage4/15/2023 postMessage takes a message: Message as the argument - it is our own message kind that we selected and agreed with the Child app to pass through. So Instead of document.URL it's better to use. The window.postMessage () method safely enables cross-origin communication between Window objects e.g., between a page and a pop-up that it spawned, or between a page and an iframe embedded within it. If you don't do this, Office for the web ignores any messages you send to its iframe. When embedding SharpTools. PostMessage used incorrectly could potentially make your website vulnerable for crosssite-scripting attacks. To send messages to the Office for the web iframe, set the PostMessageOrigin property in your WOPI CheckFileInfo response to the URL of your host page. Window.postMessage is a browser method that provides this capability for Google Chrome, Mozilla Firefox, and Apple Safari. Update: docuent.URL can become a problem, when you use queries or links with location (#anchor) since your current url will become different from the one of the iframe source. The window.postMessage () method enables cross-origin communication between a window object and an embedded iFrame and therefore provides a mechanism to circumvent this restriction. There are times when you want to enable communication for an IFRAME that contains content on a different domain. ![]() If you control both, it's much easier and this example will cover such use-case. data that is sent over those messages needs to be serialized it's tricky to start communication because most of the time your aren't sure what loaded first: main window or an iframe. In the iFrame: parent.postMessage(JSON.stringify(),'*') main window and an iframe can exchange data using postMessages. Iframe and parent window postMessage communication Posted on DecemQuite common situation is that we place part of the content of our site in IFRAME tag which is linked with another page, typically, in the same domain as our main page. My simple problem is, that i can not identify the iFrame inside of it's parent callback method. ![]() I have control over both sides but the content comes from two different domains. I use postMessage to send events from an iframe to it's parent document.
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