Test IndexedDB's IDBCursor.continue() with a key parameter. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". indexedDB = self.indexedDB || self.webkitIndexedDB || self.mozIndexedDB || self.msIndexedDB || self.OIndexedDB; dbname = "cursor-continue.html" indexedDB.deleteDatabase(dbname) indexedDB.open(dbname) db.createObjectStore('someObjectStore') objectStore.createIndex('someIndex', 'x') objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) objectStore.add({'x': testData[nextToAdd]}, nextToAdd) indexObject.openKeyCursor(null, 'next') PASS event.target.result.primaryKey is 0 event.target.result.continue(3.14159) PASS event.target.result.primaryKey is 3 event.target.result.continue() PASS event.target.result.primaryKey is 4 event.target.result.continue() PASS event.target.result.primaryKey is 5 event.target.result.continue(12) PASS event.target.result.primaryKey is 7 event.target.result.continue(date) PASS event.target.result.primaryKey is 9 event.target.result.continue() PASS event.target.result.primaryKey is 10 event.target.result.continue() PASS event.target.result.primaryKey is 11 event.target.result.continue('A bit1') PASS event.target.result.primaryKey is 14 event.target.result.continue('A bit3') PASS event.target.result.primaryKey is 16 event.target.result.continue('the BIGGEST string') PASS event.target.result.primaryKey is 17 event.target.result.continue() PASS event.target.result is null indexObject.openKeyCursor(null, 'prev') PASS event.target.result.primaryKey is 17 event.target.result.continue('A bit2') PASS event.target.result.primaryKey is 15 event.target.result.continue() PASS event.target.result.primaryKey is 14 event.target.result.continue(date) PASS event.target.result.primaryKey is 10 event.target.result.continue() PASS event.target.result.primaryKey is 9 event.target.result.continue(1) PASS event.target.result.primaryKey is 2 event.target.result.continue() PASS event.target.result.primaryKey is 1 event.target.result.continue() PASS event.target.result.primaryKey is 0 event.target.result.continue() PASS event.target.result is null indexObject.openKeyCursor(null, 'prevunique') PASS event.target.result.primaryKey is 17 event.target.result.continue('A bit2') PASS event.target.result.primaryKey is 15 event.target.result.continue() PASS event.target.result.primaryKey is 14 event.target.result.continue(date) PASS event.target.result.primaryKey is 9 event.target.result.continue() PASS event.target.result.primaryKey is 8 event.target.result.continue(12) PASS event.target.result.primaryKey is 7 event.target.result.continue(3.5) PASS event.target.result.primaryKey is 3 event.target.result.continue() PASS event.target.result.primaryKey is 1 event.target.result.continue() PASS event.target.result.primaryKey is 0 event.target.result.continue() PASS event.target.result is null indexObject.openKeyCursor(null, 'next') PASS event.target.result.primaryKey is 0 event.target.result.continue(3.14159) PASS event.target.result.primaryKey is 3 Expecting exception from event.target.result.continue(1) PASS Exception was thrown. PASS code is 0 PASS ename is 'DataError' Exception message: Failed to execute 'continue' on 'IDBCursor': The parameter is less than or equal to this cursor's position. indexObject.openKeyCursor(null, 'next') PASS event.target.result.primaryKey is 0 event.target.result.continue(3.14159) PASS event.target.result.primaryKey is 3 Expecting exception from event.target.result.continue(3.14159) PASS Exception was thrown. PASS code is 0 PASS ename is 'DataError' Exception message: Failed to execute 'continue' on 'IDBCursor': The parameter is less than or equal to this cursor's position. indexObject.openKeyCursor(null, 'prev') PASS event.target.result.primaryKey is 17 event.target.result.continue('A bit2') PASS event.target.result.primaryKey is 15 Expecting exception from event.target.result.continue('A bit3') PASS Exception was thrown. PASS code is 0 PASS ename is 'DataError' Exception message: Failed to execute 'continue' on 'IDBCursor': The parameter is greater than or equal to this cursor's position. indexObject.openKeyCursor(null, 'prev') PASS event.target.result.primaryKey is 17 event.target.result.continue('A bit2') PASS event.target.result.primaryKey is 15 cursor = event.target.result Expecting exception from event.target.result.continue('A bit2') PASS Exception was thrown. PASS code is 0 PASS ename is 'DataError' Exception message: Failed to execute 'continue' on 'IDBCursor': The parameter is greater than or equal to this cursor's position. Expecting exception from cursor.continue() PASS Exception was thrown. PASS code is 0 PASS ename is 'TransactionInactiveError' Exception message: Failed to execute 'continue' on 'IDBCursor': The transaction has finished. PASS successfullyParsed is true TEST COMPLETE