getKey

fun getKey(query: IDBValidKey): IDBRequest<IDBValidKey?>(source)

The getKey() method of the IDBIndex interface returns an IDBRequest object, and, in a separate thread, finds either the primary key that corresponds to the given key in this index or the first corresponding primary key, if key is set to an IDBKeyRange.

MDN Reference

fun getKey(query: IDBKeyRange): IDBRequest<IDBValidKey?>(source)