Message passing - Chrome Developers

PHOTO

Tue Nov 29 2022 02:50:25 GMT+0000 (Coordinated Universal Time)

var port = chrome.runtime.connect({name: "knockknock"});
port.postMessage({joke: "Knock knock"});
port.onMessage.addListener(function(msg) {
  if (msg.question === "Who's there?")
    port.postMessage({answer: "Madame"});
  else if (msg.question === "Madame who?")
    port.postMessage({answer: "Madame... Bovary"});
});

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https://developer.chrome.com/docs/extensions/mv3/messaging/#external-webpage

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Message passing - Chrome Developers

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