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minor fixes

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Ilya Kantor 2021-03-13 10:08:29 +03:00
parent a89de3548d
commit 91aed383d9
1 changed files with 4 additions and 4 deletions
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6-data-storage/03-indexeddb/article.md
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@ -475,9 +475,9 @@ There are two main types of search in an object store:
1. By a key or a key range. That is: by `book.id` in our "books" storage.
2. By another object field, e.g. `book.price`.
First let's deal with the keys and key ranges `(1)`.
First let's deal with the first type of search: by a key.
Methods that involve searching support either exact keys or so-called "range queries" -- [IDBKeyRange](https://www.w3.org/TR/IndexedDB/#keyrange) objects that specify a "key range".
Searching methods support both exact keys and so-called "ranges" -- [IDBKeyRange](https://www.w3.org/TR/IndexedDB/#keyrange) objects that specify an acceptable "key range".
Ranges are created using following calls:
@ -486,7 +486,7 @@ Ranges are created using following calls:
- `IDBKeyRange.bound(lower, upper, [lowerOpen], [upperOpen])` means: between `lower` and `upper`. If the open flags is true, the corresponding key is not included in the range.
- `IDBKeyRange.only(key)` -- a range that consists of only one `key`, rarely used.
All searching methods accept a `query` argument that can be either an exact key or a key range:
Searching methods accept a `query` argument that can be either an exact key or a key range:
- `store.get(query)` -- search for the first value by a key or a range.
- `store.getAll([query], [count])` -- search for all values, limit by `count` if given.
@ -511,7 +511,7 @@ books.getAll(IDBKeyRange.upperBound('html', true))
// get all books
books.getAll()
// get all keys: id > 'js'
// get all keys, where id > 'js'
books.getAllKeys(IDBKeyRange.lowerBound('js', true))
```