JSFiddle - React, Tailwind, and code Playground

HTML

<div id="idb_version"></div>

JavaScript

var db_name = 'myname',
    database_open_request = window.indexedDB.open(db_name);
database_open_request.addEventListener('success', function (e) {
    database = e.target.result;
    database.close();
    var second_database_open_request = window.indexedDB.open(db_name, database.version + 1);
    second_database_open_request.addEventListener('upgradeneeded', function (e) {
        database = e.target.result;
        database.createObjectStore("store"+database.version,{keyPath  :   "id", autoIncrement : true});
        database.close();
        window.document.getElementById("idb_version").innerHTML = database.version;
    });
});