“Cannot call method 'open' of undefined” error when using indexedDB.open

Question

I am new to IndexedDB and I am following this guide IndexedDB Tutorial I am simply trying to create a database and then be able to add a few entries. This is what I have so

Answer 1

Any time you see code containing a call to setVersion, it's using an outdated syntax. It was unfortunate that we had to make such a big change so late during the spec writing, but it made using IndexedDB correctly tremendously simpler so we decided it was worth it.

There is good documentation on developer.mozilla.org, even though it could definitely be improved.