just a simple script that will force you to pay attention to one tab

payAttention.js

console.log("injecting 'PAY ATTENTION' script")

const title = document.getElementsByTagName('title')[0];
let visible = true;

document.addEventListener("visibilitychange", (event)=> {
    visible = !visible;
    title.innerText = !visible ? "😠 PAY ATTENTION!" : "good job 🥳🎉"
    console.log(visible)
});