How to save the data that was entered in the extension for Chrome?

Question

Google Workspace

We need material where you can learn how to save the data that the user can enter in the extension, namely on the options.html extension page.

Answer 1

var test = document.getElementById("test").value;
// сохраняем введенное значение
localStorage["test"] = test;

https://developer.mozilla.org/en/docs/Web/API/Web_...

Answer 2

chrome.storage.local - locally.
chrome.storage.sync - with synchronization via Google account.
https://developer.chrome.com/extensions/storage