Sometimes, we want to communicate between tabs or windows with JavaScript.
In this article, we’ll look at how to communicate between tabs or windows with JavaScript.
How to communicate between tabs or windows with JavaScript?
To communicate between tabs or windows with JavaScript, we use the Broadcast Channel API.
For instance, we write
const bc = new BroadcastChannel("test_channel");
bc.postMessage("This is a test message.");
bc.onmessage = (ev) => {
console.log(ev);
};
to create a BroadcastChannel object with the channel name.
Then we call postMessage to send a message.
And we received messages with onmessage.
ev has the received message data.
Conclusion
To communicate between tabs or windows with JavaScript, we use the Broadcast Channel API.
