JavaScript Chrome extension: How to sendMessage form background to background? chrome extension sendmessage example,chrome extension sendmessage from content script

My background listener is

chrome.runtime.onMessage.addListener(function (request, sender, sendResponse)

In chrome.contextMenus.onClicked listener, I want to use the message system,I call

chrome.runtime.sendMessage

in the listener, but it's not works.

So, how can I sendMessage from background to background ?

Answer:1

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