I didn't realize why my browsers (Firefox, iOS Safari) were correctly handling the tests, despite the article indicating they were not compliant. Then I realize

I didn't realize why my browsers (Firefox, iOS Safari) were correctly handling the tests, despite the article indicating they were not compliant. Then I realized the article is from 2015. The content is still really useful, though. A good understanding of JS tasks & microtasks and HTML jobs is really useful for diagnosing the inevitable front-end weirdness encountered during development when using any of the major frontend frameworks (which contain a lot of abstraction that separates the developer from these lower-level facets).