20 JavaScript Array and Object Methods to make you a better developer

Wes and Scott rattle through ~20 different Object and Arra Methods that will make you a better JavaScript developer. Freshbooks - Sponsor This is episode Wes mentions the free book Breaking The Time Barrier. Get a 30 day free trial of Freshbooks at freshbooks.com/syntax. Netlify — Sponsor Netlify is the best way to deploy and host a front-end website. All the features developers need right out of the box: Global CDN, Continuous Deployment, one click HTTPS and more. Hit up netlify.com/syntax for more info. They are also hiring! netlify.com/careers Show Notes For the docs for all these, just google mdn and the method you are looking for 😃 3:00 • Why are these great? • They are chainable • Immutable 5:30 • .filter() • Truthy or Falsy 8:00 • .map() 10:00 • .reduce() - returns any shape! filter, create a new shape, add up numbers... 14:30 • .forEach() • Side effects 16:00 • .some() • can be used as a short circuit forEach 25:00 • .every() • .includes() (why not contains?) 26:00 • Array.from() • Array.from() takes a secondary map arg • Array.of() 29:00 • Object.values() • Object.keys() • Object.entries() 32:00 • Array spread - converts iterable to array • Array spread - Concats arrays • Array Spread + Slice. Don't splice - remove an item from an array. 34:00 • Object Spread 37:00 • Function Rest 39:00 • Object.freeze() 40:00 • Object.seal() 41:00 • Object.assign() - no longer needed because you can object spread •

Reference vs Copy in JavaScript • ×SICK×PICKS× • •

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Release date

Lydbog: 25. april 2018