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Syntax - Tasty Web Development Treats

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

Syntax - Tasty Web Development Treats

Wes Bos

Js, Technology, Css, Html5, Tech News, Webdevelopment, News, Javascript, Html

4.9 • 1.1K Ratings

🗓️ 25 April 2018

⏱️ 55 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

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

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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

Shameless Plugs

Tweet us your tasty treats!

Transcript

Click on a timestamp to play from that location

0:00.0

You're listening to Syntax, the podcast with the tastiest web development treats out there.

0:06.1

Strap yourself in and get ready.

0:08.1

Here is Scott Tolinsky and West Boss.

0:10.5

Welcome to Syntax, The podcast with the tastiest web development treats around.

0:18.2

With me as always is Wes Boss.

0:21.2

Say what's up.

0:22.2

Hey everybody.

0:23.7

Hey, in this episode, we're going to be talking all about array methods

0:28.4

and object methods.

0:30.0

We're going to be doing some of the ones that we feel like

0:32.3

are very, very usable things you should be using, you know, somewhat frequently stuff that's going to improve your life, stuff that's going to make your code more readable, easier, all that good stuff that comes along with these methods.

0:44.6

We're going to be going just a little bit about what they do, maybe why you might want to use them,

0:48.7

what they return, what the benefits are, all that good stuff. And this episode is sponsored by Fresh Books,

0:55.0

which is amazing Cloud Accounting software

0:58.0

as well as Netify,

1:00.0

which is honestly one of,

1:02.0

you know, possibly one of my favorite services of all time here at this point.

1:05.8

I tweeted about it the other day and someone was like yeah but they're your sponsor.

1:10.0

I was like yeah but I you know found Netlify first and then reached out to them and was like I love your

1:17.4

service I absolutely love this thing so any words or comments you hear from me talking about that?

1:22.6

It's 100% my genuine reaction here.

1:26.4

I would say probably about half of our sponsors

...

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