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Syntax - Tasty Web Development Treats

703: The Observer Pattern

Syntax - Tasty Web Development Treats

Wes Bos

Tech News, Technology, News

4.91.2K Ratings

🗓️ 11 December 2023

⏱️ 19 minutes

🧾️ Download transcript

Summary

In this episode of Syntax, Wes and Scott give a high level overview of the observer pattern, what is the observer, what are downsides to too many observers, and more. Show Notes 00:25 Welcome 01:42 Syntax Brought to you by Sentry 02:16 High level overview Syntax 694: What’s Up With Angular with Mark Techson Godot Engine 03:36 What might you observe in game development? 06:50 What is the observer? 08:11 What are some downsides to too many observers? 10:17 IntersectionObserver, MutationObserver, and PerformanceObserver 12:25 ResizeObserver 13:04 What about addEventListener? @BenLesh on Callbacks being faster than observables 16:13 Signals are becoming a big thing Hit us up on Socials! Syntax: X Instagram Tiktok LinkedIn Threads Wes: X Instagram Tiktok LinkedIn Threads Scott: X Instagram Tiktok LinkedIn Threads

Transcript

Click on a timestamp to play from that location

0:00.0

Monday, Monday, Monday, Monday, open wide Dev fans.

0:04.0

Get ready to stuff your face with JavaScript,

0:07.0

CSS, node modules, barbecue tips, get workflows,

0:10.0

break dancing, soft skills, web development,

0:12.0

the hastyest, the craziest, the craziest, the tastiest, web development

0:16.4

treats.

0:17.4

Coming in hot, here is Wes, Barracuda, Bars, and Scott, El Tor Toroloko Tolinsky.

0:25.0

Welcome to Syntax on this Monday, hasty treat.

0:30.0

We're going to be talking about a design pattern in computer programming, one that is becoming

0:36.9

more and more relevant, the more in which we see these things in our JavaScript.

0:42.2

And I'm talking about the observer pattern.

0:44.6

What the heck the observer pattern is,

0:47.2

where it comes from, and how it relates

0:49.8

to the things that we do in JavaScript.

0:53.0

My name is Scott Tlenski,

0:54.5

a developer from Denver, and with me as always is Wes,

0:59.7

boss.

1:00.8

Yeah, we've had this to talk about observer pattern and in a future episode we're going to talk about the observable both like

1:09.7

Rxjs. I know angular has a lot of observers in it and now there is a proposal to add

1:16.5

the observables to JavaScript as a native thing which is pretty nifty so this is kind of going to be like a first

1:26.1

run at sort of explaining what the observer pattern is for you as well as some of the things in JavaScript that are already using that and then we'll do

1:35.1

another episode on the proposed addition to the language.

...

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