Ah, right, my bad. In my defense, JavaScript treats a value of `undefined` diffe... | Hacker News

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giornogiovanna on Feb 3, 2020 | parent | context | favorite | on: Null Values in SQL Queries

Ah, right, my bad.

In my defense, JavaScript treats a value of `undefined` differently from an unset field / variable (e.g. when testing `object.hasOwnProperty('field')`).

tabtab on Feb 3, 2020 [–]

JavaScript has too many "non-visible" value types in my opinion. This makes for both messy code and messy debugging.

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