chrome-extensionHow to send message from background worker to content script

chrome.tabs.query({active: true, currentWindow: true}, function(tabs) {
  chrome.tabs.sendMessage(tabs[0].id, {some: 'value'}, function(r) {
    console.log(r)
  });
});ctrl + cyoutubegithub

`chrome.tabs.query` get tabs based on specified parameters	`active: true` get active tabs only
`currentWindow: true` get currently open window	`sendMessage` sends message to content script on the selected tab (currently active in our case)
`{some: 'value'}` message to send (any object can go here)	`console.log(r)` callback code to process response `r` from background message listener

How to send message from content script to background script
Listen for a message in background script
Listen for a message in content script

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chrome-extensionHow to send message from background worker to content script

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