Regarding this API: [image] runtime.onMessage To send a message which will be received by the onMessage listener, use runtime.sendMessage() or (to send a message to a content script) tabs.sendMessage(). There is missing information how this behaves if I define…

Is there a way to “request” update of MDN? Yes! Visit the page in question: runtime.onMessage - Mozilla | MDN , hover over “Feedback” at the top and choose “Report a content problem” which will put you in the issue tracker we use for MDN content. I agree it would be good to document this. Especi…

Using multiple `browser.runtime.onMessage.addListener`

Add-ons Development

juraj.masiar (Juraj Masiar) July 11, 2019, 8:29pm 3

Thank you for the info!
Reported here.

1 Like

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Using multiple `browser.runtime.onMessage.addListener`

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