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Exploring the Broadcast Channel API for cross-tab communication


This article explains how to use the Broadcast Channel API to build synchronized and interconnected web applications.

It operates on the principle of creating a single, shared channel that multiple contexts can join and leave at any time. Once joined, these contexts can send and receive messages through the channel, enabling seamless data exchange and event propagation. Since messages are broadcast to all listening contexts (which may include multiple visitors) on the same origin, you should be careful not to send sensitive information via this method, as there is no built-in encryption or authentication.

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