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chrome-extensionExecute code when extension is installed in Chrome.


chrome.runtime.onInstalled.addListener(function(d) {
  if ( d.reason == "install" ) {
    console.log('installed');
  }
  else if ( d.reason == "update" ) {
    console.log('updated');
  }
});ctrl + c
onInstalled.addListener

listen to installation event

d.reason

contains install if this is a new installation or update if extension is installed already and just being updated

console.log('installed')

execute this code when extension is freshly installed

console.log('updated')

execute this code if extension is installed already and has been just updated