[IndexedDB] Add IDBObjectStore/IDBIndex.exists(query) (#48)

• From: Joshua Bell <notifications@github.com>
• Date: Wed, 07 Oct 2015 11:43:26 -0700
• To: w3c/IndexedDB <IndexedDB@noreply.github.com>
• Message-ID: <w3c/IndexedDB/issues/48@github.com>

For stores this is the same as count(key), but would be cheaper for indexes.

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Received on Wednesday, 7 October 2015 18:44:30 UTC