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A typo fix updateneeded in IndexedDB

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Sean Lee 2022-06-20 09:27:56 +08:00 • committed by GitHub
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6-data-storage/03-indexeddb/article.md
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@ -277,7 +277,7 @@ db.transaction(store[, type]);
- `readonly` -- can only read, the default.
- `readwrite` -- can only read and write the data, but not create/remove/alter object stores.
There's also `versionchange` transaction type: such transactions can do everything, but we can't create them manually. IndexedDB automatically creates a `versionchange` transaction when opening the database, for `updateneeded` handler. That's why it's a single place where we can update the database structure, create/remove object stores.
There's also `versionchange` transaction type: such transactions can do everything, but we can't create them manually. IndexedDB automatically creates a `versionchange` transaction when opening the database, for `upgradeneeded` handler. That's why it's a single place where we can update the database structure, create/remove object stores.
```smart header="Why are there different types of transactions?"
Performance is the reason why transactions need to be labeled either `readonly` and `readwrite`.