Understanding Iterators and Iterables in JavaScript - Jenn Creighton: 200 OK 2019

This talk explores the world of iterators and iterables in JavaScript – aka the backbone of the spread/rest operator, generators, and so much more. Attendees will learn more than the basics: custom iterators will be built and modified and we’ll expand our spread operator knowledge with some unusual uses.

Jenn Creighton is a software engineer at Rent the Runway and conference speaker. She lives in New York with her two cats, one dog, and maintains a Home for Abandoned Succulents, Mismanaged Plants and Otherwise Ailing Flora. You can find her online @gurlcode.

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HTMLCollection, NodeList and many other array-like objects (e.g. classList) are also iterables:

typeof someiterable[Symbol.iterator] === 'function';

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35:25 For Promises, just use Promise.all()