[msimpson]

I will never understand why these examples are considered abuse as they exhibit standard behavior.

It's just as if I were to write the following JavaScript:

  node.classList[ isHidden ? 'add' : 'remove' ]( 'hide' );

I'm simply using a ternary and a bit of reflection, but the arguments regarding "correctness" this engenders...

[euyyn]

And it's even generous of you to call that reflection.

[pouta]

Can you explain a bit further what the code you posted does?

[msimpson]

Element.classList:

https://developer.mozilla.org/en-US/docs/Web/API/Element/cla...

Property Accessors (Bracket Notation):

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

Conditional (ternary) Operator:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...