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<v Speaker 1>Welcome to the deep dive. Today. We're going deep on JavaScript,

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<v Speaker 1>specifically your notes on classes. We've got an excerpt here

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<v Speaker 1>from You Don't Know Js This and Object Prototypes by

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<v Speaker 1>Kyle Simpson.

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<v Speaker 2>Oh yeah, I love that book.

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<v Speaker 1>And it looks like you're trying to figure out this

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<v Speaker 1>whole class thing, which even experienced developers sometimes get tripped

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<v Speaker 1>up on.

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<v Speaker 2>Yeah, for sure, it can be a bit of a

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<v Speaker 2>head scratcher.

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<v Speaker 1>So why don't we jump right in? The book dives

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<v Speaker 1>right in and says JavaScript doesn't actually have.

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<v Speaker 3>Classes right out of the gate.

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<v Speaker 1>So for someone writing JavaScript code, why does this matter?

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<v Speaker 2>Well? I think it matters because a lot of folks

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<v Speaker 2>come to JavaScript from other languages, okay, and they expect

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<v Speaker 2>it to work the same way like with traditional classes

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<v Speaker 2>and inheritance. But JavaScript has its own way of doing things.

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<v Speaker 2>So classes in JavaScript are more of a design pattern,

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<v Speaker 2>a way to structure your code to kind of mimic

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<v Speaker 2>that class behavior you see in other languages.

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<v Speaker 1>Got it. So you're saying we're basically creating an illusion

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<v Speaker 1>of classes exactly.

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<v Speaker 2>It's a bit of smoke and mirrors.

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<v Speaker 1>That's a really good way to put it.

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<v Speaker 2>To make it feel familiar.

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<v Speaker 1>I like that, So could you maybe give us an

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<v Speaker 1>analogy to help visualize this concept?

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<v Speaker 2>Sure, thing. Let's say you have a blueprint for a house.

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<v Speaker 1>Okay.

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<v Speaker 2>This blueprint represents the class, It defines the structure, the

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<v Speaker 2>room's the layout, you know. Yeah, but you can't actually

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<v Speaker 2>live in the blueprint itself, right.

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<v Speaker 1>You can't open a door on a blueprint exactly.

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<v Speaker 2>You need to build an actual house based on that blueprint.

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<v Speaker 1>Yeah, okay, I see that. That makes a lot of sense, right,

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<v Speaker 1>The blueprint is the plan, but the tangible house, yes,

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<v Speaker 1>that's the object we interact with exactly. So how does

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<v Speaker 1>JavaScript handle inheritance, right? If there aren't any real classes, Well, that's.

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<v Speaker 2>Where the magic of prototable inheritance comes in.

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<v Speaker 1>Okay.

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<v Speaker 2>Instead of copying behavior from parent to child classes like

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<v Speaker 2>in traditional inheritance, okay, JavaScript uses a system of linking

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<v Speaker 2>objects together. Each object has this internal link called prototype Okay,

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<v Speaker 2>The points to another object.

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<v Speaker 1>So it's kind of like a family tree, yeah, where

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<v Speaker 1>each person is linked to their.

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<v Speaker 2>Ancestors exactly, like a miniage.

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<v Speaker 1>An object can then access properties and methods from its

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<v Speaker 1>ancestral objects right through this link.

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<v Speaker 2>Yeah, it's like a chain of linked objects. Oh wow,

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<v Speaker 2>and this is what we call delegation. Okay, if an

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<v Speaker 2>object doesn't have a particular property or method, it delegates

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<v Speaker 2>the task up the chain to its prototype, okay, and

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<v Speaker 2>so on until it finds what it needs.

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<v Speaker 1>So it's like a chain of command.

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<v Speaker 2>But for code, that's a great way to think about it.

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<v Speaker 1>I like that. Yeah, so this delegation concept really changes

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<v Speaker 1>how I think about inheritings in JavaScript.

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<v Speaker 2>Yeah, it's a different way of thinking about it.

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<v Speaker 1>But if it's all about delegation, Yeah, why do we

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<v Speaker 1>still see terms like constructor and prototype?

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<v Speaker 3>Hmm, that's a good question in JavaScript.

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<v Speaker 2>Well, I think it's part of javascripts at tem to

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<v Speaker 2>make things you're more familiar to developers coming from those

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<v Speaker 2>class based languages. So you have the constructor function and

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<v Speaker 2>the prototype property. Okay, they're kind of part of this facade.

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<v Speaker 1>So they're trying to simulate the class like behavior but

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<v Speaker 1>using prototypes behind the scenes.

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<v Speaker 2>Exactly. They're like the stage props in this illusion of classes.

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<v Speaker 1>So JavaScript is really putting on a show here creating

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<v Speaker 1>this illusion of classes. It is, But the excerpt we

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<v Speaker 1>have here argues that understanding the mechanism behind this illusion

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<v Speaker 1>can actually help you write better code.

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<v Speaker 2>Absolutely, because once you see how the trick works, you

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<v Speaker 2>can use it more effectively.

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<v Speaker 1>Okay, I see what you mean there. Knowing how the

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<v Speaker 1>trick is done can help you use it better exactly.

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<v Speaker 1>So could you give us an example of, sure how

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<v Speaker 1>this understanding can lead to cleaner, more efficient code.

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<v Speaker 2>Sure. One way is through this style of coding called

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<v Speaker 2>OLO olo. Yeah, objects linked to other objects, which Simpson

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<v Speaker 2>really advocates for in this book.

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<v Speaker 1>Now sounds promising. Could you elaborate a little bit on

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<v Speaker 1>how it actually simplifies things absolutely compared to that traditional

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<v Speaker 1>class like approach in JavaScript.

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<v Speaker 2>Yeah, So let's compare them side by side. Imagine we're

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<v Speaker 2>creating a simple object representing a car, okay, a car object.

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<v Speaker 2>In the traditional approach, you might define a class using

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<v Speaker 2>a constructor function, and then you'd create instances of that

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<v Speaker 2>class using the new keyword.

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<v Speaker 1>Right, So that's the traditional way. Now with O low,

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<v Speaker 1>how would that same scenario look.

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<v Speaker 2>Well, instead of defining a constructor okay, you would create

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<v Speaker 2>a plane object okay that serves as the template for

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<v Speaker 2>your car, and then you can use object dot create,

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<v Speaker 2>object dot create to create new car objects that inherit

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<v Speaker 2>properties and methods from that template object.

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<v Speaker 1>Interesting, So we're kind of side stepping that whole class

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<v Speaker 1>illusion altogether, and we're working directly with the way that

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<v Speaker 1>JavaScript handles objects exactly.

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<v Speaker 2>We're embracing the prototypal nature of the language head on.

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<v Speaker 2>I like that.

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<v Speaker 1>So could we see an actual code snippet from the

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<v Speaker 1>book sure that demonstrates this?

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<v Speaker 2>Yeah? Absolutely, Yeah. The book excerpt has several examples. Let's

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<v Speaker 2>take a look at one. Great. In the traditional approach,

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<v Speaker 2>you might define a car class like this, okay, function

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<v Speaker 2>car make model, this make equals make this okay, model

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<v Speaker 2>equals model.

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<v Speaker 1>So we're setting up the constructor function there and adding

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<v Speaker 1>the start.

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<v Speaker 3>Method to its prototype exactly.

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<v Speaker 1>Okay, Now, how would we achieve that same functionality using OLO?

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<v Speaker 2>All right? So here's the OLO equivalent. Okay, constant car

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<v Speaker 2>prototype equals and curly brace okay start colon function parentheses,

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<v Speaker 2>curly brace okay, console dot log open parentheses quote the

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<v Speaker 2>plus this dot make plus space plus this model plus

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<v Speaker 2>is starting period close quote close, curly brace comma right

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<v Speaker 2>close curly brace semicolon got it, constant my car equal

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<v Speaker 2>object all right, create open meenthesis car prototype clothes parenthesis

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<v Speaker 2>semicolon my car okay, make equals quote Toyota close quotes

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<v Speaker 2>semi coolon my car dot model equals quote Camri close

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<v Speaker 2>quote semi colon okay. And then my car dot start

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<v Speaker 2>opening close parentheses semicolon wow.

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<v Speaker 1>Okay. So the difference is really striking.

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<v Speaker 2>It is, isn't it.

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<v Speaker 1>The OLO version feels so much more straightforward.

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<v Speaker 2>Yeah, it's much cleaner.

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<v Speaker 1>We're creating an object called car prototype that holds our

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<v Speaker 1>methods right, and then using object dot create to link

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<v Speaker 1>new car objects to this prototype. No more new keyword,

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<v Speaker 1>no more dot prototype references.

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<v Speaker 2>It's all about that direct connection between objects.

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<v Speaker 1>I like that so much cleaner, and it really reflects

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<v Speaker 1>the essence of JavaScript's delegation mechanism. You're explicitly defining the

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<v Speaker 1>relationship between objects without all that extra baggage of the

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<v Speaker 1>class syntax.

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<v Speaker 2>It's about cutting through the noise and getting to the

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<v Speaker 2>heart of how JavaScript works.

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<v Speaker 1>This is making me rethink all my old JavaScript.

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<v Speaker 2>I know, right, it's a real eye opener.

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<v Speaker 1>But I'm curious about ES six classes.

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<v Speaker 2>ES six classes.

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<v Speaker 1>They seem to offer a cleaner syntax as.

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<v Speaker 3>Well, don't they They do.

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<v Speaker 2>They definitely look cleaner on the.

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<v Speaker 1>Surface, So are they the answer then.

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<v Speaker 2>Well, not so fast. It's important to remember that ES

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<v Speaker 2>six classes or essentially syntactic sugar. They might look cleaner,

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<v Speaker 2>but under the hood, they're still based on the same prototype.

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<v Speaker 1>System, so it's not like they're a fundamental solution. It's

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<v Speaker 1>more like a cosmetic change.

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<v Speaker 2>Yeah, like a fresh code of pain on the same house.

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<v Speaker 1>So what are the implications of that for someone choosing

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<v Speaker 1>between ES six classes and OLO.

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<v Speaker 2>Well, that's a great question, and I think the answer

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<v Speaker 2>really depends on your priorities, Okay, and the specific project

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<v Speaker 2>you're working on. Some developers really appreciate the familiar structure,

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<v Speaker 2>sure and syntax that ES six classes provide. It can

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<v Speaker 2>make the code appear more organized and potentially easier to understand.

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<v Speaker 1>Right, especially for those coming from class based languages.

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<v Speaker 2>Exactly, I feel more comfortable with that syntax.

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<v Speaker 1>So in some cases, the familiarity factor might outweigh the

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<v Speaker 1>benefits of a more purist approach like OLO.

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<v Speaker 2>It could especially in larger teams or projects where maintaining

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<v Speaker 2>consistency and readability are.

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<v Speaker 1>Crucial, right, having everyone on the same page, exactly, But

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<v Speaker 1>there must be some downsides to using ES six class

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<v Speaker 1>classes if they're just masking the underlying system.

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<v Speaker 2>Right, there are definitely some trade offs.

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<v Speaker 1>Does it ever lead to confusion or.

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<v Speaker 2>It can, particularly if developers don't understand that ESIX classes

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<v Speaker 2>aren't true classes like in other languages, Right.

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<v Speaker 1>They're not really classes in the traditional sense.

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<v Speaker 2>They might fall into the trap of thinking in terms

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<v Speaker 2>of traditional class inheritance, okay, and miss out on the

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<v Speaker 2>flexibility and power right the JavaScript's prototype inheritance offers.

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<v Speaker 1>It's like learning a new language. You might be able

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<v Speaker 1>to get by with basic phrases, but without understanding the grammar,

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<v Speaker 1>you'll hit a wall when you try to express more

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<v Speaker 1>complex ideas exactly.

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<v Speaker 2>And that's the risk with relying solely on the EES

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<v Speaker 2>six class syntax okay, without grasping those core concepts of

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<v Speaker 2>prototypes and delegation, So.

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<v Speaker 1>It can actually limit your understanding. It can and potentially

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<v Speaker 1>lead to less efficient or even incorrect code.

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<v Speaker 2>Yeah, you might end up writing code that works but

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<v Speaker 2>isn't really taking advantage of JavaScript strengths.

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<v Speaker 1>So while yes six classes might seem appealing at first glance, yeah,

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<v Speaker 1>they don't replace the need to understand how a JavaScript

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<v Speaker 1>actually works.

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<v Speaker 2>Absolutely.

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<v Speaker 1>What would you say are the main advantages then of

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<v Speaker 1>embracing OLO, okay, especially for someone who's taken the time

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<v Speaker 1>to understand prototypes and delegation well.

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<v Speaker 2>For one, OLO aligns perfectly with the natural flow of JavaScript, okay.

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<v Speaker 2>It encourages you to think in terms of objects and

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<v Speaker 2>relationships rather than forcing this concept of classes onto the language.

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<v Speaker 1>Right.

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<v Speaker 2>This can lead to more efficient and expressive code.

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<v Speaker 1>It sounds like OLO allows you to work with the

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<v Speaker 1>grain of JavaScript rather than against it.

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<v Speaker 2>Exactly. You're working with the language of.

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<v Speaker 1>Strengths, and that aligns with the core principle of delegation

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<v Speaker 1>we've been discussing, right. It's all about objects delegating tasks

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<v Speaker 1>to one another rather than relying on this hierarchical class structure.

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<v Speaker 2>And that flexibility is one of JavaScript's superpowers, and OLO

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<v Speaker 2>lets you harness that power.

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<v Speaker 1>So it feels like OLO is not just a different

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<v Speaker 1>way to write code.

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<v Speaker 2>It's more than that, but a.

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<v Speaker 1>Different way to think about how objects interact in JavaScript.

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<v Speaker 2>It shifts your perspective from a rigid, class based mindset

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<v Speaker 2>to a more dynamic and interconnected view of objects.

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<v Speaker 1>I like that, and that shift in perspective can be

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<v Speaker 1>incredibly empowering for a JavaScript developer, it.

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<v Speaker 2>Opens up a whole new world of possibilities.

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<v Speaker 1>It's like we've been given this whole new set of

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<v Speaker 1>lenses to view the world of JavaScript objects.

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<v Speaker 2>Right, and with this newfound clarity.

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<v Speaker 1>And with this new found clarity, we can write code

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<v Speaker 1>that's more aligned with JavaScript's true exactly.

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<v Speaker 2>It's about embracing JavaScript for what it is, a powerful

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<v Speaker 2>and flexible language built on prototypes and delegation, rather than

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<v Speaker 2>trying to force it into this mold that doesn't quite fit.

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<v Speaker 1>As we wrap up this deep dive into JavaScript's classes,

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<v Speaker 1>what's the key takeaway you would like to leave our

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<v Speaker 1>listener with.

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<v Speaker 2>Hmmm, I would say experiment with both approaches. Yes, six

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<v Speaker 2>classes in olo. See how each one feels in practice,

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<v Speaker 2>how they impact your code structure and readability. The best

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<v Speaker 2>choice often depends on the context, your project and your

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<v Speaker 2>team's preferences. Makes sense, But the most important thing is

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<v Speaker 2>to go beyond the syntax Yeah, and truly understand the

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<v Speaker 2>underlying mechanics of JavaScript.

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<v Speaker 1>It's about making informed choices, not just blindly following the

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<v Speaker 1>latest trends or syntax.

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<v Speaker 2>Yeah, understanding the why behind the what.

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<v Speaker 1>Knowledge is power, especially in this ever evolving world. Of JavaScript.

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<v Speaker 2>It really is. And remember whether you choose to embrace

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<v Speaker 2>the elegance of OLO or leverage the familiarity of ES

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<v Speaker 2>six classes. Okay, the true beauty of JavaScript lies in

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<v Speaker 2>its dynamic nature and its ability to adapt to a

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<v Speaker 2>wide range of programming challenges.

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<v Speaker 1>So there you have it. We've demystified this whole concept

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<v Speaker 1>of classes in javascripts. He did explored the power of

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<v Speaker 1>prototypes and delegation, and we've discovered how OLO can offer

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<v Speaker 1>this more natural way to structure your code.

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<v Speaker 2>It could be a real game changer.

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<v Speaker 1>We hope this deep dive has given you the knowledge

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<v Speaker 1>and the insights to really navigate the world of JavaScript

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<v Speaker 1>objects with confidence.

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<v Speaker 2>I think it has.

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<v Speaker 1>And always remember the journey of learning and never truly

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<v Speaker 1>ends you ever stop exploring, So keep experiment and keep exploring,

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<v Speaker 1>and keep pushing the boundaries of what you can create

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<v Speaker 1>with this fascinating language.

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<v Speaker 2>Absolutely, JavaScript is full of surprises.

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<v Speaker 1>Yeah, it really is like a whole new perspective.

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<v Speaker 2>Yeah, it's a different way of thinking about things.

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<v Speaker 1>On how we structure our code for sure, and how

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<v Speaker 1>objects work in.

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<v Speaker 3>Javascripts can be really powerful, it can.

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<v Speaker 1>So as we wrap up this deep dive into JavaScript classes.

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<v Speaker 1>Any final thoughts, I.

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<v Speaker 2>Guess I would just encourage everyone to keep learning. Yeah,

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<v Speaker 2>you know, JavaScript is a language that's constantly evolving. It is,

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<v Speaker 2>there's always something new to discover, so stay curious, keep experimenting,

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<v Speaker 2>and never be afraid to dive deep.

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<v Speaker 1>That's great advice. So there you have it. Yeah, we've

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<v Speaker 1>debunked this myth of classes in JavaScript?

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<v Speaker 2>Who did?

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<v Speaker 1>Explored this whole fascinating world of prototypes and delegation, and

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<v Speaker 1>we've seen how OLO can really offer a more natural

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<v Speaker 1>and efficient way to structure your code.

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<v Speaker 2>It's a great tool to have in your JavaScript toolbox.

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<v Speaker 1>And hopefully now you feel even more equipped to tackle

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<v Speaker 1>any JavaScript challenge that comes your way.

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<v Speaker 2>You got this.

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<v Speaker 1>Thanks for joining us on this deep dive into JavaScript.

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<v Speaker 1>My pleasure, and we'll catch you next time.