Topic: JavaScript – Page 20

I learned about a nifty trick that can help me to realize conditional properties in JS objects.

I learned about the crazy concept of completion values in JavaScript.

I learned that code that doesn't look valid can be valid... sometimes.

I learned that the 'finally' part of a try/catch has the last word in everything

I learned that it's possible to have holes in JavaScript arrays and how these holes can change overall behavior.