web api instance method
IDBKeyRange: includes() method
Available in workers
The includes() method of the IDBKeyRange
interface returns a boolean indicating whether a specified key is inside the key
range.
Syntax
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
const keyRangeValue = IDBKeyRange.bound("A", "K", false, false);
keyRangeValue.includes("F");
// Returns true
keyRangeValue.includes("W");
// Returns false
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.
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).