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

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

More of Chrome Extension

Inject Javascript into webpage from content script
How to do a POST request
Inject CSS into page
How to play sound
How to modify requests headers
Execute code when extension is installed in Chrome.
How to access page variables
How to simulate keypress/keyup/keydown event on a page
Set cookie value and expiration time
Load content script for specific pages

See more codes...

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

Related

More of Chrome Extension