A PoC.md

Answer to https://stackoverflow.com/questions/60606996/how-to-get-a-json-data-from-chrome-storage/60607144?noredirect=1#comment107225101_60607144

manifest.json

{
    "name": "Getting Started Example",
    "version": "1.0",
    "description": "Build an Extension!",
    "manifest_version": 2,
    "background": {
        "scripts": ["test.js"]
    },
    "permissions": [
        "storage"
    ]
}

test.js

const object1 = ["vlah", "", "", "", "", "marc", "aojesl", "", "", ""];

chrome.storage.sync.set({ objectA: JSON.stringify(object1) });

chrome.storage.sync.get(["objectA"], function(result) {
  const objectA = JSON.parse(result.objectA);
  console.log(objectA); // works
});