How to create multiple object stores in IndexedDB

You need to open the database to check it’s current version and open it again with version + 1 to trigger the upgrade.

Here is the sample code:

function CreateObjectStore(dbName, storeName) {
    var request = indexedDB.open(dbName);
    request.onsuccess = function (e){
        var database = e.target.result;
        var version =  parseInt(database.version);
        database.close();
        var secondRequest = indexedDB.open(dbName, version+1);
        secondRequest.onupgradeneeded = function (e) {
            var database = e.target.result;
            var objectStore = database.createObjectStore(storeName, {
                keyPath: 'id'
            });
        };
        secondRequest.onsuccess = function (e) {
            e.target.result.close();
        }
    }
}