That doesn't mean you shouldn't have a reasonable understanding of what those ab... | Hacker News

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wtetzner on Jan 17, 2019 | parent | context | favorite | on: Hiring Is Broken

That doesn't mean you shouldn't have a reasonable understanding of what those abstractions are doing, though.

bgdam on Jan 17, 2019 [–]

For the purpose of selecting a DOM node in a performant manner, you really don't need to know how CSS/XPath traverse the DOM. You just need to know that querySelector exists.

In general, I think it's enough to know what your abstraction does, rather than how it does it.

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