I am looking for a way for my browser tab to detect if it has been duplicated.
Existing solutions I've come across only focus on either the duplicated tab itself knowing it's a duplicate, or the original tab recognizing the duplication, but these methods are limited to Chrome.
Specific requirements:
Additional points if the solution:
Utilizing the Broadcast Channel API can be beneficial.
onmessage event, if it matches the original one, send out another const broadcast = new BroadcastChannel('test')
broadcast.postMessage('I am First');
broadcast.onmessage = (event) => {
if (event.data === "I am First") {
broadcast.postMessage(`Sorry! Already open`);
alert("First Tab");
}
if (event.data === `Sorry! Already open`) {
alert("Duplicate Tab");
}
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