Exploring the Broadcast Channel API for cross-tab communication

developer.mozilla.org

6 pointszerodev3 comments

How did this end up on MDN?

From the "Real-world use cases and examples" section in TFA:

"A user can start reading an article on their desktop and continue seamlessly from the same point on their mobile device"

"In a collaborative text editor, changes made by one user can be broadcast to other users' instances in real-time"

None of that is possible with the BroadcastChannel API as it's only for same-origin communication between contexts (i.e. tabs, frames and windows) in the same browser process.

This is not the general MDN reference or guides, but MDN's blog, a new thing since about a year or so. It has a bunch of sponsored content which doesn't really care much about quality, sadly.

I had never used the API, and skimmed through the article. Found the first example very intriguing, but couldn’t figure out how it would work across devices.

Thanks for clarifying!

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