Hidden JavaScript Quirks: Beyond the Memes

This article uncovers lesser-known quirks in JavaScript that go beyond typical programmer humor and tutorials. Examples include the peculiar scoping of the `eval` function; the counter-intuitive variable capture in `for` loops; the falsiness of `document.all`; Unicode pitfalls in string iteration; and the performance and strange behavior of sparse arrays. The author also touches upon the complexities of Automatic Semicolon Insertion (ASI) and potential errors it can cause, listing many other noteworthy oddities within JavaScript.