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Showing content from https://developer.mozilla.org/en-US/docs/Web/API/IDBDatabase/deleteObjectStore below:

IDBDatabase: deleteObjectStore() method - Web APIs

Baseline Widely available

Note: This feature is available in Web Workers.

The deleteObjectStore() method of the IDBDatabase interface destroys the object store with the given name in the connected database, along with any indexes that reference it.

As with IDBDatabase.createObjectStore, this method can be called only within a versionchange transaction.

name

The name of the object store you want to delete. Names are case sensitive.

None (undefined).

InvalidStateError DOMException

Thrown if the method was not called from a versionchange transaction callback.

TransactionInactiveError DOMException

Thrown if a request is made on a source database that doesn't exist (E.g. has been deleted or removed.)

NotFoundError DOMException

Thrown when trying to delete an object store that does not exist.

const dbName = "sampleDB";
const dbVersion = 2;
const request = indexedDB.open(dbName, dbVersion);

request.onupgradeneeded = (event) => {
  const db = request.result;
  if (event.oldVersion < 1) {
    db.createObjectStore("store1");
  }

  if (event.oldVersion < 2) {
    db.deleteObjectStore("store1");
    db.createObjectStore("store2");
  }

  // etc. for version < 3, 4…
};

• Using IndexedDB
• Starting transactions: IDBDatabase
• Using transactions: IDBTransaction
• Setting a range of keys: IDBKeyRange
• Retrieving and making changes to your data: IDBObjectStore
• Using cursors: IDBCursor
• Reference example: To-do Notifications (View the example live).

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