IDBKeyRange: includes() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
Note: This feature is available in Web Workers.
The includes() method of the IDBKeyRange
interface returns a boolean indicating whether a specified key is inside the key
range.
Syntax
js
includes(key)
Parameters
key-
The key you want to check for in your key range. This can be any type.
Return value
A boolean value.
Exceptions
DataErrorDOMException-
Thrown if the supplied key was not a valid key.
Examples
js
const keyRangeValue = IDBKeyRange.bound("A", "K", false, false);
keyRangeValue.includes("F");
// Returns true
keyRangeValue.includes("W");
// Returns false
Specifications
| Specification |
|---|
| Indexed Database API 3.0 # ref-for-dom-idbkeyrange-includes① |
Browser compatibility
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See also
- 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).