16.17: Inheritance in JavaScript - Topics of JavaScript/ES6

[@seancpp]

Love the video! Just one thing: Make sure to clarify that the ES6 classes are still using the same prototypal inheritance as normal JS, and shouldn't be confused with the way inheritance works in languages like C++ and Java. (only the syntax is similar) The prototype chain and the quirks of the "this" context are all still present. The syntax for classes in ES6 hides this fact and can cause a lot of confusing errors. Hope this makes sense.

[@TheCodingTrain]

Yes, this is a very good point!

[@toastyPredicament]

I put the thing back on

[@toastyPredicament]

How did I get weird money

[@toastyPredicament]

The superset

[@toastyPredicament]

OMG

[@PuzaExplores]

I have always dreamed of a teacher like you 😍.

[@kathy9124]

Me too! 🤗

[@aymenfyi]

me too

[@CodingAdventures]

Oldies but goldies. This is a nice video with a good explanation!

[@WaseemYusuf]

Honestly, these videos are so wholesome, I never thought the day would come where I'm gonna watch OOP explanation videos on KZbin just to brighten up my day, but here we are.

[@samplower5860]

wholesome like your mom.

[@williamhorn411]

I love how straight-to-the-boint this video is!

[@mattmmilli8287]

Your dedication to educating about JS is impressive. I hope this channel pays of for you in the end even if that is not the goal.

[@oksanaserhiivna2634]

I wish all videos about JS were the same expressive and enthralling as yours. :) Many thanks for your work!

[@lukasluftlaufer1093]

Oh Daniel, you helped me once again so much! Thank you for these videos!!! You really are the best.

[@danielluna7648]

Great video! I like how this series dives into the theory and what's happening under the hood and why more than your typical videos. I'm not the type of person who can just say "because that's how it works", I have to know WHY. So thank you.

[@Patrick-iy1rb]

You are my new favorite teacher. I hope you'll decide to start teaching full JavaScript courses and sell them at Udemy or something.

[@mshahzebraza]

Wow! It's real fun to see your code. You're so immersed in what you're doing brother. Keep it up!

[@iamamirali3424]

I couldn't understand how to use Super correctly to inherit the mother class until I found your video. Thanks for this paranormal energy!

[@Jbortoletto]

Hi Mr. teacher! Your classes are awesome, no matter if subjects are simple or complex. Thank you for sharing and inspiring!

[@juliofslt]

I think I already found my fav coding channel on YT, you make the learning process really enjoyable! :)

[@aparnaiyer5873]

How wonderful! Your energy is infectious, thanks sir!

[@mxc_clips]

Your videos are the best. I am smiling while learning and watching a js tutorial. I always hope that someday I could take my skills and become a teacher to the next generation of programmers and I strive to be as good a teacher as you!

[@kabirrsinghsahni7792]

He has the all-new ways to learn code, cheers!

[@kingykronous2284]

I've recently discovered your channel and I love it!

[@johnjohnson4484]

your tuts are the gold standard here on yt

[@ShaneLeeCoding]

When I was learning Java, Interitance was something that took me a while to get my head around. I wish I had this video when I was learning this. You've made this way more clear than anyone else. Thanks Daniel.

[@hoxas]

Best teacher ever, lol burst out laughing at boint.

[@PiyushKumar-qj8ue]

Expert, always motivating me.

[@vishank7]

It feels sooo good to understand something like this! Thank you sir!

[@pinkleprechaun52]

The most adorable teacher on youtube

[@ashwinramaswamy4059]

For those using the Processing desktop editor - you might sometimes get a weird console error saying the superclass name is not defined when you try to extend it. I think this is because the editor rewrites index.html to always execute your .js files in alphabetical order of their filenames. So if you make a file 'B.js' and another 'A.js' where class A extends class B, you'll get a console error saying 'B is undefined', because it executes the subclass first. My solution is to just rename your subclasses to something beginning with a different alphabet, but it's a weird editor bug I think.

[@FernandoPonteFilho]

It's awesome to have english subtitles, thanks.

[@reimarpb]

Awesome! Btw I do like it when you start explaining classes and everything, even though I already know that and I'm here to learn about inheritance, but it does make it easier to understand

[@codybui6252]

Wonderful lesson. Thank you very much.

[@kingundfaker]

Inheritance starts at 7:20

[@hi-techlogics3831]

You are a universal treasure.

[@d_v_d1070]

happy to see concepts as such explained.

[@shaimaa3424]

U made me love Coding 😍😍😍😂😂

[@RSkyCar]

Thank you Daniel! It was really useful stream, I learned a lot, so it's all makes sense now, how to write less code and organize a project. Hope you continue with Polymorphism in the next video.

[@charlesngerem3198]

You're simply a blessing

[@nicchunglow]

You are really good at teaching!

[@sydneyhill655]

Thanks!

[@TheCodingTrain]

Thank you for the support!!

[@luismolinatanco1330]

I am 49 yrs old. I grew as a programmer with c++. Since 2007 or so I use Processing and Arduino in my teaching. I love your videos and from watching them I’m wondering if I should be teaching p5.js instead of Processing. My students are Fine Arts students. I would love to have a conversation with you about this!

[@7Chikchan]

Really appreciate your videos! Learned a lot from you

[@bestformspielt]

Your hand drawn curly braces are outrageous! ;)

[@tntdogs6910]

Nice video, helped me. I'm doing web-components now in my comp sci class

[@pierrem2983]

I finally realized that you have to be a good programmer to code in JavaScript

[@imajt5]

Wow, you are awesome. Really great explanation.

[@osamasy5802]

You are really the best @😊

[@halimchu9346]

super duper helpful! Thank you!

[@grahamhelton5395]

So to create the Tree, you would for example (in place of Particle class) have Animal class and then the (in place of Confetti class) have 'class Mammal extends Animal'? To do the tree would the next just be for example 'class Four legs extends Mammal' or 'class Four legs extends Animal'? Does the new class become the new super class?

[@TheCodingTrain]

You can do either! But "class FourLegs extends Mammal" would by definition also extend Animal, but not the other way around!

[@josephgaribaldi4340]

I'm one of the people that's beeen watching you from the future. So had the opportunity to notice your hair styles evolution .... from happy relaxed to happy "businessman" style. So is this latest style just temp?

[@lavdixit2267]

you explained it very well

[@marnix2452]

It would be cool if you make an implementation of the strategy design pattern. It follows the design principle "favour composition over inheritence"

[@frankkj1995]

Boint! Ha that made me chuckle :)

[@zacharymcarthur9013]

I’m curious you said that a class can only inherit one other class, do you mean for example I couldn’t say “class Bat extends mammal, bird” to for example get the mammal class and as well pull flight from the bird class? I hope that makes sense. Thank you.

[@aleksd286]

As a JS developer I can say that composition is preferred over inheritance. Please do a video about it, people will love it 😀

[@TheCodingTrain]

Can you link to some good resources so I can read up on and research?

[@aleksd286]

@@TheCodingTrain I think this article explains it well. medium.com/humans-create-software/composition-over-inheritance-cb6f88070205

[@AhmadAlmutiry]

Thank you, May you explain what difference between abstraction and encapsulation?

[@rdmammad5721]

Perfect tutor ever😂

[@bluestonecreeper720]

Hi coding train. Take a look at the came screeps. Good vid

[@idontwantmynameinhere]

Are you going to make videos on polymorphism and encapsulation? And if you already did, where can I find those videos?

[@TheCodingTrain]

Here's a video about the basic idea of OOP (encapsulation) - kzbin.info/www/bejne/il6reJeZbbFgbdk - and the polymorphism video will come out later today or this weekend.

[@forktrader7870]

do you really need different classes to work with? and is it really bad to have conditionals within the class? example I have BigDataGrid class, do I really need to create separate DataGrid for each report? it seems highly maintainable in the future but highly quite alot to type with. anyway, thanks for the idea.

[@OptimusPrimeagar]

Can you have more than one inheritance? For instance class Confetti extends particle extends circle ?

[@kingundfaker]

He says this at the end. The answer: no , but you can have a child class of a child class.

[@hailahong3021]

Man. That’s what I need

[@carlkitstie]

You are just amazing

[@lubomiratanasov6714]

Hi, I would like to know, what is the difference between Class-Inheritance and Object-inheritance. Thank you.

[@liamrobertson2670]

You should go over getters and setters. Factory functions would be great too

[@TheCodingTrain]

Oh good idea! Please suggest here! github.com/CodingTrain/Rainbow-Topics/issues

[@slyer7695]

Love from Italy!!!! ❤️❤️❤️❤️ 🇮🇹 #LoveFromItaly8

[@hussainsalih9736]

I want ask you how to read text file in javascript???

[@0100-f1v]

use fs

[@paraschavan014]

Wooo I am learning inheritance (Java) In my college

[@grainfrizz]

C# does object oriented the best way possible (in my own opinion). Abstract, interface, struct...these are all super intuitive. But I understand that JS is interpreted lang and is not strongly typed. That's why it so short-handed.

[@forktrader7870]

hello kababayan. 😂 JS is a gift and curse. they have simple class object capacity but it helps other professonals to create something that doesnt need to dig deeper the behind object-oriented programming and shoot their feet with diamond object problem etc. and no need VS download/setup on their system. anyways, thats your opinion. keep it up kababayan. ✌️

[@misdi_official]

love it

[@russellge2372]

Thank u so much, sir!

[@Thanveershah]

I challenge you to create an animated colorful smoke , You are amazing btw

[@jochenpanjaer980]

Where is the video about encapsulation in ES6?

[@TheCodingTrain]

I think I cover it in this one? kzbin.info/www/bejne/il6reJeZbbFgbdk

[@tntdogs6910]

nice shirt man, where did u buy it?

[@toxin0343]

could you use the super keyword for the show function for example show(){ super.show() fill(this.bright) square(this.x, this.y, this.r) } or would it cause errors or would it just draw it as a circle . edit: I will be trying this myself and will comment what happens but wanted to comment in-case I forget

[@TheCodingTrain]

Yes, you can do this! In the case above it'll draw both the circle and the square.

[@toxin0343]

@@TheCodingTrain and would they be at the same x and y position? Would the square be on top because it runs after the particle? Thanks for the quick response

[@TheCodingTrain]

@@toxin0343 Indeed they would be at the same x,y b/c each object only has that one x,y! It's the same as if you had called circle() directly in show().

[@toxin0343]

Thanks for the quick reply love the channel

[@xomayaaxo]

dude you're awesome

[@alexblue8524]

I wanted the code from this video. does someone knows how can I get that ?

[@eduardwille1711]

Copy it by looking at what they typed ;)

[@tomgibbons2230]

Is Nodes implementation of JS different? This doesn't work for me - the super(x,y) is not a valid keyword. Regardless, great video. You're the man! :-)

[@MrAfusensi]

A

[@kikawet]

What IDE are you using?

[@TheCodingTrain]

VSCode, more here: kzbin.info/aero/PLRqwX-V7Uu6Zu_uqEA6NqhLzKLACwU74X

[@palinejs]

Great!

[@maheshkotal4214]

Hello sir, can you add index. Html page, I need to see the code

[@TheCodingTrain]

This workflow video series might help! where I go over all the pieces. kzbin.info/aero/PLRqwX-V7Uu6Zu_uqEA6NqhLzKLACwU74X

[@danushkaanurada6936]

What is that editor name..

[@TheCodingTrain]

VSCode! For more: kzbin.info/aero/PLRqwX-V7Uu6Zu_uqEA6NqhLzKLACwU74X

[@ellpell6550]

Nice thanks

[@hussainsalih9736]

Thank you

[@jeranto24]

SENSEIIII!!

[@horseoperamarker]

yes

[@limitless1692]

Thanks

[@bestformspielt]

composition over inheritance! just saying. :)

[@adamnejm]

If you need a nice example here you go. Change classes using SPACE, hold Mouse1 to draw: let interval = 0, id = 0, objects = [], classes = []; function setup() { createCanvas(500, 500); //frameRate(60); } function draw() { background(255); objects.forEach(p => { p.update(); p.render(); }); if(mouseIsPressed) if(!(++interval % 5)) objects.unshift(new classes[id%3](mouseX, mouseY, 20)); } function keyPressed() { if(keyCode == 32) id++; } class Particle { constructor(x, y, r) { this.x = x; this.y = y; this.r = r; } update() { this.x += random(-2, 2); this.y += random(-2, 2); } render() { ellipse(this.x, this.y, this.r); } } classes[0] = class Square extends Particle { constructor(x, y, r) { super(x, y, r); this.t = millis(); } render(){ let s = sin((millis() - this.t)/100)*10 rect(this.x, this.y, this.r + s, this.r + s); } } classes[1] = class Circle extends Particle { update() { super.update(); this.r = sin(millis()/500) * 10 } render(){ ellipse(this.x, this.y, this.r); } } classes[2] = class Line extends Particle { update(){ this.x += 1; } render(){ line(this.x, this.y, this.x + this.r, this.y); } }

[@lee_sung_studio]

14:28

[@mvmo4744]

Somehow classes in JavaScript feel wrong to me :(

[@lthoedt]

i have to do it FIRST

[@mrlectus]

i wish i could type fast like you do

[@sifatmoonjerin2479]

I miss my Bubble... :(

[@poornamith]

VS Code

[@toastyPredicament]

Sleepy pill for dream please

[@toastyPredicament]

Pls be ok

[@toastyPredicament]

Oh Dan

[@robotosailr2129]

now understand es6 better

[@wanafnanhariz7650]

i really like your videos, i do, but the theme(rainbow, unicorn and stuff) ,is not that i dont like them, its just remind me of weed...and make me wonder why u use that theme... XD

[@toastyPredicament]

Excuse me I'll smoke a cigarette

[@ultimade9610]

Third

[@benchilcott6908]

this.boint

[@hi-techlogics3831]

Love from Pakistan