![]() ![]() "The sender ID in content matches this extension"ī("rdm-messaging") ī("Listen to background") ī. Wait for "resume" message so we know the content script is also ready.ī(resolve) ī("background-script-ready") ī("Send message from background to content") Ĭonst contentSender = await ( "Sender's tab URL matches the RDM tab URL"ī(listener) ī(listener) Firefox Private Network (beta) Protect your browser’s connection to the internet. The BroadcastChannel constructor takes a single parameter: the. Messages which are posted to a given channel are delivered to all listeners of that channel. That is, communicating between windows/tabs, iframes, web workers, and service workers. Sign up for new accounts without handing over your email address. The Broadcast Channel API is a simple API that makes communicating between browsing contexts easier. Learn how each Firefox product protects and respects your data. View Demo Part One: The Sender The first part of the process is setting up a 'source'. Get protection beyond your browser, on all your devices. Let's take a look at how window.postMessage works and how you can use it today in Firefox, IE8+, Opera, Safari, and Chrome. browser/components/extensions/test/browser/head.js.Ĭonst `) ī(extTab.url, TEST_URL, "Tab has the test URL") ī(!!sender, "Message has a sender") ī(!!sender.tab, "Message has a sender.tab") Essentially window.postMessage acts as cross-domain AJAX without the server shims. These allowed rejections are copied from * Any copyright is dedicated to the Public Domain. I’m trying to pass data (initially just a simple string) between two pages using window.postMessage, but I can’t get it to work.
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