9 Reasons People Hate JavaScript 

If companies or developers stopped releasing new JavaScript libraries or frameworks every nanosecond, maybe I wouldn't hate it.

I know PHP, I know Rust, I know SQL, I know Shell-script, I even once knew C and C++, but I have never managed to get comfortable with Javascript. I don't think I ever will. It never ceases to confuse me.

Null actually means null pointer. Values that contain objects are actually pointers to the object rather than containing the object themself, and null is pointer to nothing. Which is why typeof null is 'object'.

I'm deeply learning html and css right now next it's javascript, I want to be frontend developer

Thanks for your amazing content Mosh. You videos are not only very engaging and useful, but also very therapeutic and refreshing 😊

JavaScript is the chaotic language something like the internet deserves to represent it.

I just started a full stack JS job w/ data analysis job duties too. Seeing this video has made my heart skip a beat.

meanwhile im 46yo,self taught and still learning JS >HTML>CSS>React with vite for the last one year, im having fun learning JS because i want to be front end dev for my freelance journey

I decided to take JavaScript seriously because of Dash's clientside callbacks. And I recently got hired into a web development firm that wanted a Python developer just like me. So I decided to learn JavaScript. That undefined vs null causes a little bit of problems. Once I knew the distinction: const, let, var undefined, null object, array, map, set. I also knew JavaScript classes were fake. I was ready.

JavaScript is weird, but somehow I love it so much.

hello sir, its great to see you again

Great video Mosh, the video was great! You are the best programming professor in the world!!!

Okay where does 2:17 come from?? It seems hilarious

Honestly I kinda love the speed to prototype in JavaScript, even knowing the risk of accruing insane technical debt is a perpetual risk with how quiet the language is about the dev's mistakes. I dunno, I'd rather just take the type coersions in JS than C segmentation faults and Java verbosity.

Thanks for sharing.that is informative

The main problem with JavaScript is that it handles too many things under the hood. When we learn C, we struggle with pointers and must overcome this to make our programs run. In JavaScript, we don’t need to know how it automatically converts your values behind your back, nor do we need to understand the event loop, or that keeping elements in an array of the same type can make it faster… Our app just works until it doesn’t, and then we’re left bewildered because we missed this kind of information from the beginning.

I love JavaScript❤

Doing great. Here's a dare for you: Make a tutorial video of half an hour in QBasic Language.

Is it popular or is it simply the default for front end?

I just started learning js this month

Do you think it is worth learning javascript to use it in frontend and backend if not what do you recommend

Matter of preference. Some when they see complications they stop learn that thing. But i think developers should be vast knowledgeable in every tool out there. But who I'm i but people choose what they like

I find TS helpful. Especially libraries built with ts.

Thanks for this. I'd also add the screwball syntax. Seems like you can't write a function without tossing in some blank pairs of parens and braces. What a mess.

Hey mosh, are we expecting new courses from you, I asked you because I love your courses 😊

One reason to hate JavaScript less these days, is AI like ChatGPT. Teaching and reminding of language quirks is a pretty good feature. Not that they are always right, but I've found great help when exploring new languages so far.

Great ❤❤❤

My first paid project was a telegram bot which I created using NodeJS. So I assigned price as number, but admin entered it with comma. All the posts he created had undefined on price 😂😂

Web sites demand more resources than video games these days

Where did u get that meme, can u share with us

The chaos is what makes it beautiful

Hey Mosh could you do a caching course, like redis

Now make a video with how to cope with these shortcomings

Is it possible talk about world strtengthest chess software Sockfish 16.1 heard part of software uses C++???

sir you better update your course in your website about React native because is it so old version of documentation React Native 0.62 and now React Native 0.72

There is another alternative to JavaScript, beside TypeScript: Dart/Flutter. When compiled/run for the web it is automatically translated to JavaScript. And Dart if a safe and consistent language. Both type-safe, and null-safe. So a lot of bugs are simply prevented by the language itself. Of course, a scricter language requires greater design and programming skills; therefore you need to be a pro.

Mr mosh man I love you ❤

Also tools like Babel and Typescript wreak havoc on your debugging experience.

Hell.. I thought I was a disgruntled engineer unable to establish myself in the industry.. now I learnt why something is not right with this lang

I went through BASIC, C++, Pascal (later Delphi) and finally settled on C# for 2 decades. Once over lunch we were discussing JS with colleagues who used it. I said I hate it. They asked why. Not that they were surprised; they just wanted to hear my version. I said: "I feel like coding in JS compared to C# is like going to a ballroom party in your pyjamas. Not that it can't be done. It just doesn't ever feel right". For the short while I was sentenced to using JS, I remember I spent more than half a day once just chasing a bug due to null checking errors. That's criminal if you ask me. Horrible thing JS. I will not dignify it by calling it a language.

That's why I love it! hahah

console.log({}+[]) => [object,Object] console.log({}+{}) => [object,Object] [object,Object] I try this they are different what you said, Did I do someting wrong?

And this doesn't even touch on it's biggest issues... 1. It is interpreted. You have to worry about performance, run-time errors, error handling in ways you don't in compiled languages, pre-compiling (which may or may not work at work on individual machines), etc. 2. It is typeless meaning runtime errors confusion, TypeScript (which is only a partial solution and still has lots of anys when detailing with the outside world, etc.), etc. 3. It is too tied to DOM, browsers, versions, OS's, etc. in ways you have no control over. 4. It is too tied to HTML/CSS, including all the browser issues, libraries to get around it, rendering, page states, browser versions, security, etc. 5. Too many parts of it are synchronous with all sorts of non-linear behavior for fairly simply communications, I/O, all require massive complexity when you simply want to application the code to simply wait until a call is made and then continue to the next line. 6. It relies on libraries to try to manage the above -- from JQuery, to React, etc. All these add complexity, change far too often, are rarely complete, add additional complexity beyond the language itself and are pretty much necessary for anything with complexity. 7. It's non-local. Things like a file system, local storage, direct access to things, etc. is doesn't typically exist resulting in massively complex work arounds, etc. etc.

I use wysiwyg and I don't have to program in html anymore

Can we get a full Sveltekit course please? I'll give you all my money.

l am busy with HTML & CSS, and after that going straight JavaScript!!!!

Typing always gets me. I can assign a variable as a string, then make it a boolean, then finally a date. I know TypeScript fixes this, but you can still sign multiple types to variables in TypeScript. So your variables can be unpredictable when debugging someone else's code.

I didnt like it because the intellisense wasnt there and troubleshooting it was needed a browser that dont give all the data... but could do all programming though... but if someone writes in html javascript and you need to change it, it is headache as you cant troubleshoot and have to do fast code reading like me and fix it or make it better

I mainly use C# for backend development and learning JavaScript was a breeze after learning C#. I honestly don’t get the hate. Debugging is not horrible if you use console.log along with your browser dev tools

`this` is a menace

So many non-issues. How is [ ] + { } = ? an issue you could possibly run into??? Why would you want to add an empty array to an empty object? I don't understand a real world application of this. Can someone explain why this video includes it?

MySQL has the motto "garbage in, garbage out" , and no one complains about that. You cant add objects, you should expect to get nonsense back in a scripting language that aims to keep running. The real reason devs hate JS is because it doesn't tell them exactly what to do and how to do it. If you keep removing flexibility, you'll end up with a tool that's so terse, it'll make more sense to automate it than let you toy with it.

I used to like Python more than JavaScript (The 2 interpreted language that I used the most) . There's 2 turning point that made me become like JS more than Python - I hate Python's concept where indentation as a block since I worked with python in many environment - JSDocs

I only know C and C++ (they are not the same thing, and learning to write idiomatic C and C++ is like learning a different language, but they do work very similarly under the hood) the idea that null and undefined are two different things ... or that a can equal b and b can equal c but a does not equal c as explained above , yikes ... i dont think i ever wanna learn JS ...

using javascript since 1998 for DHTML website, but never use it as primary/main language programming. website is chaotic thing, you'll never can build it only using javascript without HTML and CSS. I don't care full stack or front-end or whatever it called, just used whatever you want to write.

This validate my hate🤣 but i gat to learn it for my bills😭

Where is @2:16 from?😂

mosh you are just making it complex, in real world, who the hell would add empty arrays and empty array and objects?

What is your upcoming course mosh

I find this video very funny cause of how true it is, but bruh, I love JavaScript, I do everything with it, typescript is a good one though, since learning typescript, it’s been the go-to, still JavaScript under the hood 😂

Excuse me. Sorry if it bothers you, can you recommend data recovery software for Android with a 100% success rate?

Oh yeah

Guess what, my 1 programming language is JavaScript and still using it with typescript 😮

I hated learning JS and web when forced to work on an internal webapp that was built on bootstrap when Jquery was underpinning it. It made it so confusing and all these frameworks that popup with syntax baggage just made it hell. After that nightmare project I remade their stupid BS template and theme widgets in raw HTML5, CSS, and JS6. Not only did I learn real web dev the website was lean and fast and maintainable by any competent programmer. Those frameworks seem great but the time it appears to save gets paid for later tracing odd bugs or security issues back to your 10 megs of black-box lib imports because FOSS is assumed to be reliable too often.

Hey, lets bring jQuery back. It was fun to use and it was easy. Update that to the date. It had all the capabilities the UI could need. Some improvements here and there and it would have been a good alternative to current library set of javascript library jumble.

JavaScript is not clear about a lot of stuff but I love it.

You forgot to mention the incredibly resource consumption

Personally, I hate OOP so classes means fuck all to me. I work as a Senior DevOps Engineer anyway and we use Python (without OOP).

Over the years it’s become fashionable to hate JS. The rules, with some admitted quirks, are very easy to absorb. Everyone who has ever cited some of those quirks I’ve asked how often they’ve been affected which is almost never. The loose and strict equality is probably the greatest real world quirk

I love javascript, I have used it for years, almost two decades now. I just don't like to use it on the server.

I love you Mosh

I might be somehow wrong , but I just logged the outputs of these , both in the browser and in a server env , here is what I get : [] + [] => ' ' ; [] + {} => [object Object] ; [] + {} => [object Object] ; {} + {} => [object Object][object Object]

JS isn't perfect (no language is), but people hate on it because they think hating it will in-group them, or for content-creator clout -- contributing to the previous. Coming from JS to Python, there are some nice things about it, but I mostly prefer JS (and TS even more -- it's not that hard to pick up if you know JS). If I'd mostly worked with Python before, though, I suspect I'd have a different opinion. In the future I want to pick up languages like Go and Elixir, and I fully expect to have substantial dislike for parts of the experience.

Its typescript who stopped me quitting Javascript 😐

the technology that enables bloatware and all those trackers.

whener one is coding,one should be very carefull thats why i love typescript

Typescript should be merged into Javascript. The lack of rules in js destroys the language.

i hate it and it doesn't pay my bills yet :(

There's no thumbs-up button :-/ ... not sure what's going on with YT these days. Learning JS right now, agree on all points you make, coming from Java/Python/C# this languages has lot of strange "rules".

yeap , js is weird and awesome at the same time !

It's true that JavaScript got some weird behaviours that would sometimes make you scratch your head for hours.

These are what make Javascript the best programming language.

That's why typescript makes Javascript better.

I use webassembly C# Blazor, and try to forget Javascript since then.

I saw a lot of memes about JavaScript being trash but I never used it myself. I went straight to TypeScript and honestly I like it. Python and TypeScript are my top languages.

I don't hate JavaScript, but I can't say the same about the ecosystem

I love it more than I hate it

Typescript is a Language ❌ Typescript is a Linter ✔

Anyone here with JavaScript ebook? Thank you!

JS is complicated for beginners or messy developers. You can do things in hundreads of ways and more than half of them are wrong. The hard part of JS is just about learning discipline, cleaness and simplicity. You can do everything with a functional approach without classes and without using this and its contexts. An average developer typically write crap with JS. An advanced one would write very elegant code. Mastering JS is not easy, this is why people hate it. A well written JS code is thousands of time more concise and elegant than a python one.

it doesn't matter if {}+{}=0 or anything bcz there's no rational developer will do it in real world projects so javascript is the best

I recently started to use TS in project and... I clench my teeth everytime i need to do something and i comfort myself that's a work that i do for future me.

PHP has suffered hate for decades and survived, its JavaScript turn! Like JavaScript they both put food on the table.

Its not intuitive or easy to learn, somehow it took off when it did not deserve to. Too late now it's out of control lol.

One more thing: In some methods, I can not use FOR loops. The application just ignores my FOR loop. That's why I must use "recursive functions" in API requests or in some methods to iterate. It is also funny that In some cases, I am allowed to use "for in" or "for of" loop but still can not use regular "for i++" loop 🤣

It's the only language that has a book with this ridiculous title, "Javascript : the good parts". You mean there are bad parts? Yes, there are bad parts. That's why JQuery was invented.

Becuase Flutter(dart) is much better and easier and full stable language

These coercion quirks brought up in the video are only a theoretical problem and not really an issue when writing applications with javascript. Most of javascript's language issues are mitigated if you activate your brain. But people are lazy. I get it. They don't want to educate themselves. But true, the non existent type system make intellisense impossible which forces you to always lookup things in the documentation.

😂😂 love the illustrations.

Love JavaScript