Locate every item that has a value that is not defined

My data is stored in indexeddb, with an index on a text property of the objects. I am trying to retrieve all objects where this property's value is undefined.

I have been experimenting with IDBKeyRange.only(key), but when I use null, undefined, or an empty string, it throws a 

DataError: The parameter is not a valid key
. It works fine for all defined values though.

I am conducting these tests in Chrome.

Update:

After checking the resources tab in Chrome, I discovered that the values are not actually present in the index. This means that my current index setup cannot be used to find objects where the property is not set.

javascriptindexeddb

Answer №1

Utilizing a secondary (index) key, achieving this should be feasible by utilizing IDBKeyRange.lowerBound(0). Keep in mind that null or undefined are considered invalid as per the IDBKey specifications.

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