Rare Earth Juejin Tech Community
Jun 15, 2025 · Frontend Development
Master Cross‑Tab Communication: BroadcastChannel vs localStorage in JavaScript
Learn how to synchronize data across multiple browser tabs using the native BroadcastChannel API and the fallback localStorage + storage event, with step‑by‑step code examples, usage scenarios, feature comparisons, compatibility notes, and a reusable TabMessenger class for seamless inter‑tab messaging.
BroadcastChannelJavaScriptWeb API
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