5 JavaScript Concepts You HAVE TO KNOW
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Күн бұрынHow well do you know JavaScript? Well, if you don't know these 5 concepts, then you better get on it!
00:00 - Intro
01:00 - Equality
2:30 - Async Javascript
04:00 - Error Handling
05:40 - ES6 Syntax
07:40 - Array Methods
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@therustguy10 3 жыл бұрын
1. Equality 2. Asynchronous Js 3. Error Handling 4. Es6 Syntax 5. Array Methods
@abhinaykumar7662 3 жыл бұрын
Thankyou 👍
@flashdoom 3 жыл бұрын
1. diff between == and === 2. solved in typescript 3. solved in typescript 4. just standard syntaxes used everywhere 5. map,find,filter,push,pop on arrays
@vadymstepovyk5435 3 жыл бұрын
just copypasted description - true programmer
@tunamusic2314 3 жыл бұрын
@@vadymstepovyk5435 so grateful :))
@Abrasive_TouchXx 3 жыл бұрын
@@flashdoom king
@swaniketchowdhury 3 жыл бұрын
LISTEN TO THIS MAN'S ADVICE!!!!! I'm a react dev & I can't stress enough that how important these topics are.
@JamesQQuick 3 жыл бұрын
Glad you agree :)
@jayantjagtap2976 3 жыл бұрын
Could any tell if I should do react in typescript, I am just starting. Please guide me
@swaniketchowdhury 3 жыл бұрын
@@jayantjagtap2976 you can start using JS, learn TS with it if you can. Or if you are comfortable in TS then you can write in TS.
@jayantjagtap2976 3 жыл бұрын
@@swaniketchowdhury I find react with typescript better with type checks but the thing is o cannot find more material to read. And my project is complex keeping the future scope in mind I started the project in react typescript. I want to know your thoughts if I should switch to React in plain js or typescript.
@sreeshakv5405 3 жыл бұрын
I am from Karnataka India and looking for job in software development. I have completed engineering n have knowledge in JavaScript, node and Android studio. I can share resume. I am in need of job, can someone please help me?
@B_dev 3 жыл бұрын
this man just returned from the javascript badlands holy shit r u ok my man
@JamesQQuick 3 жыл бұрын
Damn...yes, I'm fine. Very healthy and plenty of sleep. Don't know why my eyes look red and puffy on camera
@wiertomta173 3 жыл бұрын
@@JamesQQuick I think it's the lighting of your room, combined with a cool light temperature on your camera light / monitor...
@sowianka9258 3 жыл бұрын
Omg, you made my day with this comment 🤣🤣🤣
@sidenote1459 3 жыл бұрын
Hands down best video on "JavaScript need to knows" I've ever seen. Great job covering the the stuff that people tend to forget are industry standard.
@JamesQQuick 3 жыл бұрын
Wow. Thank you :)
@DJ_Melech 3 жыл бұрын
Dude looks like he's been coding instead of sleeping.
@someoneoutthere1866 3 жыл бұрын
var x = (...n) => {console.log(n[0])};
@JamesQQuick 3 жыл бұрын
Hmm, I sleep about 8 hours a night but I get lots of these comments. IDK why I don't look like I'm sleeping but i promise I am lol
@DJ_Melech 3 жыл бұрын
@@JamesQQuick good! :)
@beastmasterbg 3 жыл бұрын
@@JamesQQuick do you drink water, take cold showers ,exercise. Those would probably help
@christian_k_e 3 жыл бұрын
@@JamesQQuick then you need a skincare routine
@johnmcintyre9741 3 жыл бұрын
I like how you mention items people need to know when learning. I am learning and find people staying too simple, not adequate explaining, or being extremely complex. You are in the middle where many of us need help. I will be watching for your crash course.
@alexandergeorgesquire220 7 ай бұрын
2 years on how are you doing?
@invincibul 3 жыл бұрын
A JavaScript crash course for 2021 would be dope - you’re the most well-spoken JavaScripters I’ve come across.
@oanacristea2572 3 жыл бұрын
Andrei Neagoe
@vaibhavshinde5520 Жыл бұрын
Akshay saini
@dicksontv5323 Жыл бұрын
kzfaq.info/get/bejne/qpOVlJOIr7HNkmw.html
@christopherjohnson6537 2 жыл бұрын
I think a part two would be warranted covering: 1. Objects and how inheritance works 2. JavaScript's class syntactical sugar 3. Protected and private class properties and methods 4. How to implement OOP and functional programming with JavaScript
@richochet 11 ай бұрын
Yes to this!
@androidocean2796 3 жыл бұрын
05:47 - ES6 or ES2015, not ES2005(For new developers).
@harrisonmayotte7226 3 жыл бұрын
lol I was wondering if anyone else heard that
@dilln2158 3 жыл бұрын
I was looking for this comment lol
@ADNAN0MNM 3 жыл бұрын
@@dilln2158 I was shook.
@yayz_ 2 жыл бұрын
Simple mistake, its not like he said ES25000BC
@andreroydev 3 жыл бұрын
Please make this crash course of those 5 concepts a reality! 🙏
@JamesQQuick 3 жыл бұрын
Oooh I like that idea!
@aaronlinton-chambers 3 жыл бұрын
Yes please
@samuelnmeje 3 жыл бұрын
@Lowkey Loki you are hilarious, 😹😹
@Rikk1984 3 жыл бұрын
@Lowkey Loki I've been going through that all week. Fairly confident in my concepts of vanilla JS then bam the moment I start learning jquery...🤯🤯🤯🤯🤯🤯
@Rikk1984 3 жыл бұрын
@Lowkey Loki good move. Makes the the transition a lot smoother
@umarbabajidda9664 2 жыл бұрын
Man... this video turned waaaay more useful than I thought. As someone who writes JavaScript but doesn't have a clue what they are doing...this is solid advice.
@Doolz51 Жыл бұрын
The bags under yours eyes really sell the “I’m a JavaScript developer” message. Joking, but awesome video. Thank you.
@ZeroReign 2 жыл бұрын
Great video! Lately, I've been more disciplined in doing back to basics learning, and totally agree with the points you made. I have found sometimes, with work I would forget to think about some of them following the patterns and pre-existing code. Another one I think I would like to learn about is logging and alerting for your application. Perhaps that topic is more its own topic, but definitely something I would like to learn more about specifically around monitoring and alerting for your applications.
@bieldozap 3 жыл бұрын
It's a PERFECT video to someone who's already in touch with JS, but very confusing for a beginner.
@Ali-mj9lw 2 жыл бұрын
Hahahahha right
@TimGreig 2 жыл бұрын
Totally agree
@HawkMcDork 3 жыл бұрын
i've been learning JS during covid, this is a great review and clarification, excited to check out more of your videos....thank you for this content! and YES to the crash course!
@Arrogar 3 жыл бұрын
I'd add to the list Callbacks + Prototype & Prototypal Inheritance, which both of them relate to knowing Objects in JS. Those are ones that are most used and can be a bit hard to grasp for beginners. Afterwards try applying basic principles like DRY and KISS. Cheers!
@cmdv42 3 жыл бұрын
crash course would be great 💯and seeing how the pieces fit together visually would be very helpful!
@sandip_bettereveryday 3 жыл бұрын
Understanding 'this' and 'prototypal inheritance' are two important topics to consider as well.
@Hyuts 2 жыл бұрын
I can't stop using [array methods] since I started but sometimes it can be a bad habit. Array methods cannot be broken out of so be mindful with big datasets or searching. Great video!
@Martin-wb6nv 2 жыл бұрын
Agree , especially with the array methods. They are very confusing in the beginning but are so helpful once you get good.
@jesssmith9291 2 жыл бұрын
I am on my 6th month in college for web dev and javascript has been allot to take in, I absolutely love watching your videos when I'm stuck on assignments. You explain things very well! Thank you for doing these videos! Your awesome 🙂
@latinstuff1 Жыл бұрын
just take a bootcamp lol
@mooshy5944 3 жыл бұрын
I'm a professional developer, and I agree with all of this, especially making use async/await. One thing I would add is to start using Typescript sooner than later.
@JustinShaedo 2 жыл бұрын
Yes! 100%! A lot of this video seemed to be about problems that don't exist in typescript. ... We knew it was (in most/many cases) better back in early 2000 (with other Web languages), it's just as much/even more so today.
@Barnardrab Жыл бұрын
Agreed. TypeScript made JavaScript tolerable. I just don't get this idiotic trend towards loose typed languages.
@c1u3 Жыл бұрын
How is typescript related to Javascript and what are its uses? Sorry I'm quite new to programming.
@Barnardrab Жыл бұрын
@@c1u3 TypeScript is a compiled version of JavaScript. TypeScript adds type syntax to JavaScript, which is used to prevent errors such as assigning a number to a string variable.
@lawrencedoliveiro9104 Жыл бұрын
Interesting, I was just reading a report where the principal developer behind Svelte says TypeScript is “not worth it” for developing libraries. Instead, interface types are declared using JSDoc annotations.
@graydenfisher5704 Жыл бұрын
Thank you so much for this video! I have been living under a rock since I built my last great webapp, I got javascript certification in 08 without ever actually needing it before then and couldn't understand why the programing meme group was always saying how hard it was, then I started to learn one of the modern frameworks and was completely unaware that es6 changes were now standard and I finally understood why everyone was saying it was difficult. This doesn't really resemble the JS I learned back then, but after watching your video and looking up these things it makes a lot more sense now.
@JesseGilbride 2 жыл бұрын
Great rundown of super important core stuff. As an addendum, I might add: import/export, let & const mutability (and scope), and classes.
@aaronpaterson7582 3 жыл бұрын
yes, i love a hands on js course please.
@YaroLord 3 жыл бұрын
being a programmer isn’t stressful! - james, 21 years old
@newaz1268 3 жыл бұрын
😂
@thamarai_kannan_thala4982 3 жыл бұрын
True 😚I love it
@mrwho.7163 2 жыл бұрын
it is not stressful ? you joking or its sarcasm
@binitrupakheti4246 2 жыл бұрын
He's only 21. Dude looked at least 25. Being a programmer is definitely stressful
@bhoot1702 2 жыл бұрын
Ooooohh I see what you did there 😹
@dancemusikk 3 жыл бұрын
Yesss!!! Please do the course! And if you can talk about Objects and the This keyword, also using those array methods with objects. Thank you!!
@eslamsobhy5692 3 жыл бұрын
Yeah, it will be so cool to make this crash course about those 5 concepts! ❤😄
@aaronlinton-chambers 3 жыл бұрын
You are gift that keeps on giving. Thanks James
@cookieswirlcc5683 2 жыл бұрын
The first one was SUPER helpful for me. I was really confused about why a line or block of code that has equality could have === or ==. Thank you so much for clearing that up for me!
@thismoment57 2 жыл бұрын
Really enjoy your teaching style. You have my vote for making that in-depth Javascript course you mentioned towards the end. 🙏
@BillFlann9 3 жыл бұрын
Hi James, I'm new to JavaScript, but not programming. Most KZfaq tutorials are for beginners with very basic explanations of what variables are, why we need them etc. That's great for the beginners who need it, but not the best use time for me (and probably many others). I'm looking for more 'developer's wisdom' type of videos such as this one. I'm looking forward to your crash course video(s), especially if it contains some lessons of what you learned (the hard way) from experience. Thanks for this excellent video!! ...........Liked and subscribed
@dicksontv5323 Жыл бұрын
kzfaq.info/get/bejne/qpOVlJOIr7HNkmw.html
@thestarr5844 10 ай бұрын
Did you get a job ?
@tariquethomas7816 2 жыл бұрын
I would like to see a crash course on these topics please. Thank you James!
@donblack1571 2 жыл бұрын
Agree
@arielspalter7425 3 жыл бұрын
You came up on my yesterday, and this is the second video of yours I've watched. You're spot on. Subscribed!
@computerprogrammingwebtech3017 2 жыл бұрын
These are Interesting insights about some of the key concepts about JavaScript! Asynchronous, ES6 Syntax and Error handling are areas to focus on especially for senior JavaScript developers.
@tom.watkins 3 жыл бұрын
Great list, I would say truthy/falsely checking is another fundamental basic thing that tends to boggle the mind of a lot of people I see learning JS for the first time.
@rishabhanand4270 3 жыл бұрын
Knowing how pass by reference and pass by value work in javascript is also important, it's basically how primitives vs objects are treated. And not just async / await, the event loop in general, this will introduce stuff like requestAnimationFrame in browsers and process.tick in Node. The best thing is the ability to write javascript that is easy to read. It's very hard to make sure everyone can read your code. This will introduce linters and beautifiers to beginners. Finally, I also suggest everyone to switch to typescript because it's a better superset and there isn't really a reason not to.
@Martinit0 Жыл бұрын
Agree on the pass by reference vs value question. Especially with arrays it can be non-obvious to the beginner. Some Array methods create new arrays, others modify the array in place. This leads to statements that look strange like arr2 = arr1.concat(); Why would you concatenate arr1 with nothing? Well, this is how you crate a copy of an array.
@user-sw2nh4ll7h 8 ай бұрын
There is no pass by reference in JS, only pass by value. If you were passing in by reference, you could change when the reference is pointing to, like you can in C, but you can't. You are passing a reference by value, which is different from passing by reference.
@connergoldberg 3 жыл бұрын
Great breakdown. Async javascript can get confusing as hell especially since you can't easily follow what applications are running and when.. so having an understanding of these things are important as well as debugging network calls within your web application (but that isn't specific to javascript only)
@rainiercodes4064 2 жыл бұрын
I started learning js a few months ago and these 5 things were literally my biggest hurdles until recently. It's ironic that you pointed them out perfectly
@JamesQQuick 2 жыл бұрын
Glad it was relevant for you :)
@TheRealDunkirk 3 жыл бұрын
I've been programming since I was 10. I've been doing it for a living for 27 years. I've done projects in most major languages. I wrote a single page app with vanilla JS about 10 years ago. I've been writing a new SPA with VueJS for the past couple of months. This is a really good list for beginning JS programmers.
@codingwithazan2280 Жыл бұрын
can u plz help me?
@alessiocancian6929 2 жыл бұрын
You forgot TypeScript, coming from JavaScript it's the best thing to learn nowadays and it saves a lot of time when developing, helping with type checking, documentation and (last but not least) autocompletion.
@BeefBurgerStrawberryMilkshake 10 ай бұрын
Thank you for the short version! Omw to the array playlist.
@jaxonpetersen5942 2 жыл бұрын
Very good channel. No Bs. No frills. No delays. Very quick easy efficient digest of information.
@juliomolina8972 3 жыл бұрын
Writing these down ✍️ Also I would be interested in this becoming a tutorial 😀
@lowercaseguy3578 3 жыл бұрын
I started with C and then javascript then Data structure & algorithm , after that the speed at which I understand inner details increased exponentially.
@FlaviusAspra 3 жыл бұрын
Of course. Fundamentals first is the correct route.
@DTRI89 2 жыл бұрын
Very helpful my man. I feel I get lost often with Javascript and I'm glad you have vids to can help further explain the simple things
@MartinGeremiFlores 3 жыл бұрын
Started working more with javascript, this video has been a great help.
@zaink3845 3 жыл бұрын
What are those VSCode extensions you’re using for logging in the editor? Actually, it’d be nice if you have a list of recommended extensions in relation to JS and React 🙂
@sengarnikhil 3 жыл бұрын
He is using quokka and try es6 es7 snippets
@That__Guy 3 жыл бұрын
I think this is important. And since you cannot really tell what I mean by "this", that's what you need to learn.
@mishasawangwan6652 3 жыл бұрын
thank you. finally someone said it.
@user-gf4sn6ss5i 2 жыл бұрын
I just started out and I love watching these type of videos. Today, right now, I only kinda know what your talking about, but I know that in a few months when I re-watch this, I'll be taking notes frantically and get right into practicing. 😄 Honestly, one of the things that attracted me to coding was the fact that I'll never be able to learn EVERYTHING. There will always be new things to discover and new problems that will no doubt drive me crazy and have me spend hours (days? More?) looking for a solution. I'm just sad that I have to waste time at my day job (where I feel like I've reached the final level and have nowhere left to climb) 😫😫
@webdevessentials 3 жыл бұрын
Thanks for this. I need to revise these concepts since i jumped directly into ReactJS practice project to teach myself
@diogocastelo6187 3 жыл бұрын
It looks like you're crying! don't be sad my dude, there are people out there coding in C
@arkanglegeibriel 3 жыл бұрын
I still code in C, that speed is stupid good.
@ironcladruffian1490 3 жыл бұрын
C is good. C is good.
@akarapongboonrat9338 3 жыл бұрын
C is life
@JamesQQuick 3 жыл бұрын
lol not crying. For some reason my eyes look red and puffy on camera.
@J90JAM 3 жыл бұрын
Needs must, my guy.
@MaxProgramming 3 жыл бұрын
The funniest entrance you have done ever 😂
@JamesQQuick 3 жыл бұрын
haha thanks!
@deansolistino 3 жыл бұрын
Great video! The way your phrased interconnected ideas was great!
@BossyGotti 3 жыл бұрын
Yes! A crash course tackling these subjects, Awesome!
@luketembanimunyandu3326 Жыл бұрын
The way you explained complex concepts with such clarity and simplicity is commendable. 👍👍👍
@QaSiM937 3 жыл бұрын
I really want to know, which plugin you're using to see real-time errors and console outputs.
@Rorrshaj 3 жыл бұрын
quokkajs
@elektroskeptic481 2 жыл бұрын
And what is that fancy looking editor? Is that Babel?
@aaronlinton-chambers 3 жыл бұрын
I am literally learning Asynchronous programming now.
@lowercaseguy3578 3 жыл бұрын
function yes{return new Promises(); } oh man promise are quick to forget
@stfalx 3 жыл бұрын
I am asynchronously programming a literal!
@yurekgolge Жыл бұрын
Thank you this was very helpful because I'm just getting started and now I have a bigger picture in my head. Thanks again.
@P00ters1 Жыл бұрын
this is so important for interviews. u must know this 5! thank you for ur help
@Mr1Horhe 3 жыл бұрын
0:03 When the errors fix themselves after 4 hours of debugging
@funkykong9001 3 жыл бұрын
Some code examples while you speak of each idea would be helpful
@ANDREPEIXOTO1 3 жыл бұрын
Awesome content! I'm a jr JS developer and this was very helpful. Thanks for sharing your knowledge, James.
@over1498 Жыл бұрын
I like this guy. Seems like an actual subject matter expert, which is rare. After years in test engineering I’m trying to broaden my scope and really understand the language I’m using daily (trust me you can be a great QA Engineer and not really know how it’s working). Anyway, a shocking number of YT channels seem to have no evidence they’ve ever coded anything, and just make videos about vaguely what to learn (hTmL cSs aNd reaCT gUys) and then a lot more videos on career advice and how much money they make 😂 I’m convinced at least a couple of them have never coded at all and just used KZfaq tricks to make a channel about it. I respect the hustle I guess but it’s really not helpful. Anyway thanks, even in this quick high level summary you gave code examples so I’ll definitely be subbing and going through this channel’s backlog
@tomkimsour 3 жыл бұрын
Use typescript and the video it solves most of the problems 👌
@Ferenc-Racz 3 жыл бұрын
Agreed! Everybody have to stop strugling with JS. Learn Typescript, and thats all.
@prudhvichinnam1488 3 жыл бұрын
Do vanilla async projects for beginners like movie search API
@JamesQQuick 3 жыл бұрын
That's a great example!
@prudhvichinnam1488 3 жыл бұрын
@@JamesQQuick please do this project
@kevinzhang8974 2 жыл бұрын
totally agree. Now I need polish my javascript again. thank you!
@vinaysehwag459 3 жыл бұрын
Yea , I love to have about briefly explained topics of JavaScript like this 5 and more . Thank you providing JS knowledge to us.
@maloukemallouke9735 Жыл бұрын
thank you for video , you should sleep moore
@Bou19761 3 жыл бұрын
Thanks James!!! Thank you very much, really nice video and good advices :D I say YES to the crash course!
@aarok2817 2 жыл бұрын
Excellent video, guiding me what to learn next. Struggling with some of these concepts as currently learning react on top of decent but patchy JS skills...
@benjamin_fdw Жыл бұрын
Excellent video, I would just recommend avoiding over checking because it is often a sign of misunderstanding the workflow and its preconditions. I would also say don't try catch everything because it will lead your app to fall into inconsistent state
@piotrszyszkowski8729 2 жыл бұрын
Great video!! Crash course for all these topics - awesome idea!!
@rstark 2 жыл бұрын
Awesome video, sir. I'm a huge fan of your short explanations in this video. I've watched it a few times.
@sergiomendoza6833 2 жыл бұрын
glad to see you have some videos on some of these topics
@littlejoh713 2 жыл бұрын
I'm starting out with JavaScript after coming from courses in C#, HTML and CSS, I would love a crash course!
@bashdante3333 Жыл бұрын
Thank you so much, I´m starting in Javascript and with this useful videos show us how to start in a pretty accurate learning path.
@dianesmith-knowles4268 2 жыл бұрын
My JavaScript is *very* rusty! This is super helpful to get back into .js shape. Thank you!
@qwarlockz8017 3 жыл бұрын
Nice video. It is great to hear your perspective. I am going to watch for more!
@crldlncy7502 2 жыл бұрын
Thank you, kind sir. I'm gonna start watching your playlist for Array Methods.
@jr-hp7er 3 жыл бұрын
Loved this explanation James...
@XCmdr007 3 жыл бұрын
Yes! Looking forward to the crash course on JS
@angel-pu7su 2 жыл бұрын
Thanks for this amazing video, James.
@saurabhpimplapure2303 2 жыл бұрын
best thing about internet is that you get stuff like this video for absolutely free!! what a wonderful video and how nicely explained
@AhmetMurati 3 жыл бұрын
I have done all the things you mention in JavaScript even prototypes, equal tripple equal, Asynchronous, Ajax, jQuery, Error Handling, array functions and so on
@fabiofaria1327 2 жыл бұрын
Your channel is awesome dude. Watching from Brazil. Thank you!
@WorklLife 2 жыл бұрын
Yes, I would love to see your crash course😁
@andrewreiblein7219 2 жыл бұрын
This video just made my day. Thank you.
@michaelanderson3172 2 жыл бұрын
Great explanations. You are great at explaining concepts through comparisons.
@jayetchings1772 2 жыл бұрын
Great video. Keep them coming.
@chrisyoung6728 2 жыл бұрын
Thanks! Subscribed. Yes please : crash course on the top 5 would be awesome. Taking a giant tutorial with 100 subjects I might remember 2. Taking one on a focused 5, I remember all.
@bernard3992 Жыл бұрын
Very informative. subscribed !!
@VinodKumar-pg2qc 2 жыл бұрын
Sir... Really big thanks for your help... You are the best teacher...
@kirillvoloshin2065 3 жыл бұрын
who are the people disliking this video?! everything is explained simple and straight to the point! very important topics to understand as a JS dev.
@cecibenitez3917 Жыл бұрын
Thank you James, this is really usefull 👌
@otmanesajid426 2 жыл бұрын
thanx alot for this video , i now know what i shold learn after basics
@isaacasare8991 3 жыл бұрын
Woow...this is dope, many many thanks
@minhazrabbi531 2 жыл бұрын
Thank you for your valuable advise 💖💖
@NBA6Fan 3 жыл бұрын
I'm learning for 2 months only and it feels so good to hear familiar stuff finally.
@JamesQQuick 3 жыл бұрын
Yayyyy
@L8rCloud 10 ай бұрын
Asynchronous JS and Error Handling are the most important things that will level up your coding - I would have also added testing. I think everything else is superfluous
@yuriylutsyshyn3495 Жыл бұрын
Thanks a lot, good summary.
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