The JavaScript Survival Guide

The JavaScript Survival Guide 🧟 provides protection from the so-called "weird" features that you will encounter as a JS developer. This primer will introduce you to variables, functions, objects, closures, hoisting, this-binding, and more. fireship.io/courses/javascript/
#javascript #tutorial
Primary source: developer.mozilla.org
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[@darshangowda309]

Who knew a tutorial could be this entertaining :P

[@alejandrocano88]

haha i know

[@Deskofmj]

i just said broooo and left :D couldn't handle it man

[@diegoruelas603]

Lol

[@christianpaul5224]

That's a 45 minutes in a nutshell.

[@angelmeza9716]

3txx xx xxx xx ttx🇦🇴🇨🇮🇧🇮🇧🇯📶🔉📟 R Xezrzñpp

[@thatnod]

I first contracted the JavaScript virus 21 years ago, so I'm not exactly new to it. In under 15 minutes you explained everything I found confusing or contrary. It now makes sense. No longer will I think of JavaScript as quirky and insidious. Thank you!

[@noscreadur]

Likewise Mr. L: After 21 years JavaScript is almost unrecognisable in structure and scope. It's not a dirty hack anymore, it is the full-stack/style agnostic/polished hegemonic state of the art.

[@carlosmspk]

@@noscreadur use Typescript though...

[@bparlan]

I began coding with Basic in 1998, used html css sql and python until 2008, then stopped. Now I am trying to learn react, needed that javascript stuff, this video is beyond enlightenment.

[@willmil1199]

same

[@b4ttlemast0r]

it still doesnt make sense lol, but at least you understand it now

[@whong09]

"You should respect the legacy of var but never use it." Why do I feel like you're not even being ironic about this.

[@tvguideondemand]

Why would he be ironic? Is there any legitimate reason to use var in 2020?

[@Neko_Void]

@@tvguideondemand ignorance

[@this_mfr]

I'm learning JS and I keep running into things saying that Let should only ever designate a local variable and Var should be used for global. But that global variables are dangerous and so only local variables should be used, meaning you would use Let...but that doesn't explain why not use Var? Legit questions because I keep seeing conflicting stuff...

[@MrMontana1990]

@@tvguideondemand if you are writing js that will not be transpiled (babel or typescript) and usage by legacy browser should be possible you still have to use var. that should be mentioned

[@xyzzy64]

@@this_mfr If you have a global variable then it should be declared in such a way that it would remain global even by using the let keyword, otherwise you might want to look into how you're writing your code. Don't use var, let defines variables as god intended lmao

[@MrDoom159]

Never seen a more intense JS tutorial before

[@KJMcLaws]

Don't change anything on how you are doing this. Awesome quality content

[@nirmalmattmusic3993]

In a nut shell js is intuitive and crazy at the same time.

[@newtonmunene]

Fireship is perfect for me. The videos are brief but comprehensive. This makes them interesting. It also makes them perfect as refreshers. I also get to learn so many new things with every video.

[@Fireship]

Glaring typo *Primatives* 🐵 - I am aware, but can't fix it now 😭. Also, primitive constructors should have a `new` keyword. String('foo') is the same as 'foo' (literal syntax), but *new String('foo')* is what I was talking about in the video.

Np, you can perhaps add annotations.

[@Fireship]

@ I would, but that's not possible on KZbin anymore.

[@modolief]

Yikes ...

[@Andrei-pq6qp]

I've been writing Javascript for over 9 months so I understand most of the stuff explained in these 3 videos, yet I can not stop watching they are gold. Entertaining and now I understand things that we're blurry in my head or I did not understand at all. Your channel is a gold mine. Keep it up!

[@mel-182]

its nice to watch this kind of video when u're not in ur desk, resting, and just wondering about the world.

[@Robert-qq9em]

This is easily the most helpful JS video Ive seen. Many of the concepts Ive been struggling with you touched on, and none of the other JS videos Ive seen even cover JS structure like you do. Thank you for your work.

[@d0m2288]

Awesome video. Clear, concise, and informative, from your words to what you chose to display onscreen. I've been balls deep in Ruby on Rails for the last couple of weeks, and watching this really helped getting my JS brain to wake up. I'm looking forward to checking out more of your content.

[@mcvgs1780]

I love the quality of these videos. It combines the humor and entertainment of media essays and commentaries and the objectivity of programming.

[@manasmahanand732]

Please put a disclaimer that this is not a beginners course, as most beginners would be highly overwhelmed by this (pun not intended).

[@Fireship]

That's fair. This is more of a primer for concepts you should know eventually. The upcoming videos will revisit specific areas with more focus for beginners

[@SocksWithSandals]

console.log(this); // "The Javascript Survival Guide"

[@G3Number]

Fireship Thanks Thanks Thanks liked and subscribed!! Nice content! :)

[@ArnoldsKtm]

This is pretty much beginner stuff though...

[@aaronbell5994]

@@ArnoldsKtm Closures !== beginner stuff

[@gauthamnookala1776]

This has to be one of the most fun, clear, concise videos that I have ever watched. Great job!

[@9550raja]

The best thing that had happened to me after becoming a junior js developer, is finding this channel.. I'm learning a lot from you!! Thank you!

[@911madza]

The relationship between predators and prey is often described as the balance of nature. While we must survive from the JS and its mutations - frameworks, it must survive from WA itself..

[@dennisstasaski7136]

I'm blown away by how high quality this channel is !

[@undefinedvariable8085]

Great stuff man! Would've been great if you touched on how the behaviour of hoisting compares with the traditional var keyword and the let and const keywords, specifically with regards to the "temporal deadzone". As a bonus, briefly touch on how mutating objects and array key value pairs affects references to those objects in memory - this still trips me up.

[@miggu]

Your content is perfect: pace, humour , rigour , no wonder you're ranked as the best.

[@cagri5886]

The explanation of the Closures and its comparison to the functions might be the best I have heard on KZbin

[@fonncatalina6464]

I am new to JS and studied some fundamentals for a week ,this is a perfect revision for me! Thanks!

[@stevecarter8810]

As a long time developer who has not touched the web for 15 years this is the perfect bootstrap into JavaScript language. Thanks!

[@BlameItOnJoe]

I'm an amateur coder and I've taken several courses, read several Medium articles, etc. but I had never seen a memorable and easy to understand explanation on var vs let/const till now. 👏👏👏 I just repeated to myself "var is bad; let is good; const is even better"

[@CubeAmaterasu]

Bro this is the best coding channel I learn a lot in a really entertaining way. This makes me think University is truly dead

[@user-nx9he6fz7g]

Thank you. A really comprehensive video, it filled many gaps I had. Waiting for the new ones!

[@48maliks]

So glad I found this channel. Your videos are Gold mate!

[@Skellum82]

I always watch your 100 second videos. I watch this not realizing that this was your video and once the video was over, I thought to myself I’ve never heard anyone explain anything as good as you do and lo and behold it was fire ship this whole time you are a God amongst men.

[@shibe89]

Great and extraordinary presented knowledge in just 15 minutes. Wow! Keep going! Just suggestion, I noticed that you are really good at using chrome developer tools can you make a video series about that maybe at some point in future?

[@Fireship]

Great idea, that would make a good module for this course.

[@DuyenPhanLan]

Thanks for a great video! I’ve learning JS for almost a month and I am trying to wrap my head around it when it comes to applying it to real world projects

[@nehemiahalvarado1209]

Very interesting, currently taking a web tech course and this helps further my understanding of Javascript. Thank you for the great work!

[@zen-ventzi-marinov]

Damnnn I love the sound effects, though comedic, with good mood still give you the chills!

[@shivamjhaa]

I have been doing JS for a few years now, but this video still clears some concepts. Cool!

[@kemsekov6331]

I've had from little to none experience in js but I understood everything from this video. Now I am feel a bit more confident about js.

[@Blame2a]

Really good content. That is my only comment for the year 2019 but you really did a good job with editing and straight to the point explanation

[@JR-yi5wb]

BY FAR the best code tutorial on the entirety of KZbin. lol this video deserves some kind internet award

[@amithbhagat]

10:40 "Closures" and 12:40 "this". Very well explained 👍. Thank you 🙏.

[@thejonte]

Somebody: "I hate your style of teaching for free on the internet" Fireship: *Hearted*

[@uboat46]

Dude! You really make the best videos! This is awesome !

[@jameslemayian7610]

Pure awesomeness! I like the coherence! Keep it up! You got a new follower. I can't wait for the next.

[@orinbay7742]

It's great that there are multy-hour courses on any-thiing you want. But I can't thank you enough for making this short, dence videos

[@bennet615]

dude I vowed never to buy a course but guess i gotta buy yours , your teaching just hits !!!!

[@SXCRD]

Brilliant! Please continue with these videos. Well done.

[@bennettfoley3018]

another fantastic lecture. looking forward to the next one!

[@funnyanimalworld7579]

Good explanation for those already into js .Making those abit harder concepts abit clearer.

[@for41]

" what the hell is 'this'? " Your rhetoric in this video is on point. Bravo!

[@stickguy9109]

The times when I used JavaScript I mainly used Canvas API because making games is what's always got me interested.

[@Prestonepope]

Best JS overview I've seen. Thanks!

[@benjaminjameswaller]

I'm pretty 'primitive' when it comes to this topic so either spelling works for me! Thanks Jeff! I really appreciate this beginner, back-to-basics course on JS. Love'n it mate!

[@mwinetimothy3020]

You just make the learning so interesting. Thanks for the videos

[@indiansoftwareengineer4899]

Ending is awesome.... loved your channel.

[@rostyslav5334]

Wow, that was so good, Thank You so much, mate! Watching THIS 3rd time.

[@ssbrunocode]

Thanks for the great content, specially the .call function is extremely powerfull once you understand 'this', really, thank you!

[@ranjeetsinghtharu5375]

You rock Fireship!....learning curve is smooth...your videos are helful

[@iamilyes]

Fireship and Honeypot are actual entertaining KZbin channels for developers... Massive respect for all the effort you put in the process of generating such content ❤️🚀

[@ludo3941]

I usually watch everything in at least 2x speed (more often than not around 2.5x). Today I had to watch this video in 0.75x the speed and keep going back and rewatching parts lol. The variables and functions parts were too many new and complex stuff for me (even with all the similarities to Python and C#, which are languages I have studied and used before). Amazing! Quite fun and different way to explain things, thank you!

[@Atheist-Nun]

I enjoyed this tutorial very much ... very entertaining and informative. Keep up the good work!

[@richardcao2670]

Well done tutorial! It's super helpful and easy to understand. Thank you!!

[@gregfletcher2360]

Fantastic video! Also that "A Few Good Men" reference was perfect 👌

[@Fireship]

Thanks! That was a last minute addition

[@usamesavas9848]

wow, how could you explain such complex stuff in such simple words. admirable

[@ankitkaushikz]

You explain in 14:46 Minute video what people takes 5 to 6 hours. Big Fan Fireship. Entertainment + Knowledge. Wish This video could be 1 hour long.

[@VarunVerma]

The perfect video for a JS interview. Nice stuff.

[@SandeepKumar-cx7cz]

Hi do you work in js Please share your CV, if you don't mind [e-mail]

[@Mohamedhassan-if8ww]

Best Serie ever . i never thought that javascript was that complecated and easy at the same time

[@clancy-sigal]

Awesome video man! I really wish I had seen this video earlier even this is a bit challenging for beginners

[@superclue]

Nice and succinct. I prefer it this way where if I miss something I just go back 10 seconds or pause.

[@michaelbarley8668]

Wow! You are an amazing teacher, I loved this

[@pashweetie]

Finally things I can use that aren't elementary! Thanks!

[@MrStefanica]

Very good job! I'd recommend this video for higher than beginner JS programers or for programers coming from other languages. 🙂

[@denns0r]

wow, awesome editing, nice speaker voice and very understandable 👍 keep up the good work 😃

[@auntiecarol]

This is gold for those who have some experience in other languages.

[@edieltondantas6084]

👏thanks for the overview, quite helpful

[@amit.deshmukh]

I never imagined I will binge watch programming tutorial

[@donekhan7183]

Hey brother, I would like to thank you so much for the amazing ways you explain complex things, I hope you can come up with fast tutorial for lodash library of JavaScrip, I've just started learning machine learning with javaScript, so that library is very important to mastery its functions to use them for converting maths algorithms to javaScript codes.

[@LukePighetti]

I had no idea people still used lodash. What do you use it for?

[@saurabhyadav-nu3mj]

what resources are you using to learn ML with javascript. i'm also curious about ML,but not very keen to learn python for it.

[@karimnaufal9792]

First time I understood closures 😂 Thank youuuuu 🙏🏻

[@Anson_The_Pro]

Thank you for recommending this plugin. I imagine it would be very useful for predicting what "this" refers to

[@hamzac.4555]

im gonna watch this video every morning, when you compared closure and object oriented, you won a medal, and + 1000xp

[@7921kenny]

I appreciate the class analogy, that helped make js closures click for me 👍

[@rne1223]

I love your editing man.

[@GPT-X938]

Loving this video series!

[@phokgedimaja327]

It's good to come to the basics everynow and then. Fireship 🔥

[@WolfrostWasTaken]

I feel like I can only understand and grasp fully the concepts shown in this video because I already have a solid grasp on JS (I started studying and using it many years ago and I still use it on a daily basis). Nevertheless, nice job on these! It's surely a cool way to recap all the things. But a newcomer should really go deeper into these concepts on his own

[@key_michael]

You are the Web Developer Survival Channel!

[@BonjesBongo]

I have no words to describe how amazing this video is. Thank you so much for making this art piece.

[@Fireship]

Thank you Maverick!

[@thedevilffs]

Thank you. I *finally* actually understand what a closure is.

[@lingkody3526]

I really enjoy your tutorials it's not boring 😂, can u make a tutorial on how you edit your tutorials? It's so simple yet entertaining

[@dsi-films1264]

dangg, you deserve more subs :oooo amazing tutorial

[@luis96xd]

Great video, it was well explained and so intuitive! 😄

[@hartnil93]

Great video, like always. I also saw that recently in the youtube channell "demos with angular" they uploaded a video about adding nestjs for ssr with angular, can you do a video about that?, maybe even about how to deploy it into firebase clude functions, sound amazing to me. and thanks about the video!

[@Hades5k]

One can almost learn JS in less than 15 min here....!!! Great video ; )

[@juliohintze595]

Your videos are awesome! Even some experienced devs can learn from them. Do you happen to learn something when you are making these videos or are you some kind of god that already knew all of this beforehand?

[@Fireship]

This is episode 197, I knew basically nothing when I started. Just try to push each one a little further.

[@viniricardoferrera]

Aways if a person asks if u r a God, u say so. " 'course I am. pff" Duuude... U r blowing it Lol! Thank you very much for such nice content.

[@engineeringwithai]

Absolutely loved this video. Favorite one. Should add some more memes

[@ivansostarec6793]

man I love your memes in between explanations :D

[@SergioArroyoSailing]

beatiful! perfect overview and funny! :)

[@mandaputtra]

This always usefull when you create game in javascript cause this is awesome

[@freedom_aint_free]

My first contact with Java Script (JS) was in 1997, it blew me away with its possibilities, but I never got into it as a day job, I remember working with Delphi instead in the late 90's. The biggest blunder in JS for me was not having types optionally, typed languages are much faster and potentially much safer.

[@sgmvideos5175]

I liked javascript when I was learning it, possibility to do simple code and run it on any computer with browser, nice... but now I'm more experienced with it and I love it :D it's awesome language and yet so simple... if not using frameworks :3

[@LukePighetti]

I might not be first I might not be last but when Fireship posts I make a sandwich and watch it

[@anonamos225]

Weird haiku

[@ThePC007]

Why would you watch a sandwich?

[@sevcandincel]

@@ThePC007 lol

[@ankushsarkar1746]

@@ThePC007 ok dude

[@ThomasGodart]

10:40 "a closure is a function within a function" No, it's not that. A closure is a context within a context, it had nothing to do with functions. Apart from that small mistake, very good JS introduction 👍

[@exactzero]

But newbies won't understand what context means.

[@dizzyrocket2000]

@@exactzero I think of it as the movie Inception

[@runyalen]

Got represented witth the "SURVIVAL" part :)

[@Credin84]

Your editing skills are amazing, very funny