How NextJS REALLY Works

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  • Опубліковано 8 жов 2022
  • NextJS is probably the best way to build your next React application. There are few better ways to do full stack with Javascript. Hopefully this video helps you better understand why!
    THANK YOU MIR FOR THE GRIND TO GET THIS OUT TODAY!!!
    ALL MY CONTENT IS FILMED LIVE ON TWITCH AT / theo
    ALL MY BEST MEMES ARE ON TWITTER FIRST / t3dotgg
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    ALL MY VIDEOS ARE POSTED EARLY ON PATREON / t3dotgg
    Everything else (instagram, tiktok, blog): t3.gg/links
  • Наука та технологія

КОМЕНТАРІ • 165

  • @asiraky
    @asiraky Рік тому +217

    As someone who’s been mildly critical of some of your videos, this video is spot on. I’m sick of explaining what you just explained here, and I’m going to direct people here from now on.

    • @iGhostr
      @iGhostr Рік тому +3

      same

    • @huebdoo
      @huebdoo 8 місяців тому

      Yeah .. Im an SEO guy trying to explain how to deploy JS correctly ... this makes my work with engineering teams a lot easier ... thank you!

  • @Johnson-ks5uw
    @Johnson-ks5uw Рік тому +9

    I love your style of explaining and you really seem to know what you are talking about, including all the other videos you made about next. You saved me probably tons of hours of research and I am really thankful for that!

  • @gabrielwest2584
    @gabrielwest2584 Рік тому +18

    You dropped this video at the perfect time! My team is starting a new application and we're considering nextjs and this was an awesome introduction :)

  • @itzfinners7458
    @itzfinners7458 Рік тому +8

    Loving the new production style of video editing Theo! Just the inclusion of a "Coming Up" section is a great addition!

  • @abel090713
    @abel090713 Рік тому +1

    I missed like half of this live video so glad the video came out, this might be a personal favorite

  • @ShiloBuff
    @ShiloBuff Рік тому +1

    This is amazing depth and details. Right down my alley. I like your style. Thank you.

  • @matthewvalentine9961
    @matthewvalentine9961 Рік тому +47

    at this point of my development journey ( very new here , self taught 8 ish months in ) . your content is exactly what i needed, thank you!
    it feels like this is a conversation/explanation that i would have or want to have when apart of a team. very much “in the field” vibes. helping tie in the knowledge of tools & how to think of developing with them !
    stay safe. thanks again !

  • @phucnguyen0110
    @phucnguyen0110 Рік тому

    ty Theo, just what I needed since I've been playing with Next a lot these days.

  • @NikitaLipkanovOfficial
    @NikitaLipkanovOfficial Рік тому

    Love the explanation about that! Thanks for clarifying!

  • @teosurch
    @teosurch Рік тому

    Thanks a lot. So good to learn this things not by using documentation, but by watching nice UA-cam channel with a cup of tea :)

  • @faizanahmed9304
    @faizanahmed9304 Рік тому +1

    That is a beautiful explanation, thank you, Theo!

  • @JavierPortillo1
    @JavierPortillo1 Рік тому +5

    Thanks Theo!! I've been reluctant to adopt Next and other SSR tools because I didn't understand them. Now that I've heard your explanation I can see how cool Next is 👍

    • @kolega1999
      @kolega1999 Рік тому +3

      I was the same man, then I tried it and found out that it is actually kind of a wrapper around your React application which lets you render portions of it on the server. It can seem as a lot when you read or hear about it, but when you actually start building with it following the docs, it all makes sense and it's not nearly as complicated as I thought before. Having a kind of solid understanding of React helps though, you can then easily differentiate Next from React parts.

  • @shivamjhaa
    @shivamjhaa Рік тому +1

    Hey Theo. Great video as always. Can you make a video regarding what libraries/ packages are you using at ping to solve problems that you faced?

  • @DennisHorn1981
    @DennisHorn1981 Рік тому

    This is absolutely important background-knowledge! Fantastic explanation! Thank you! 😀👍

  • @giovannicostantini6269
    @giovannicostantini6269 Рік тому

    You're an amazing person!
    Great quality content

  • @mohamedhassenetetbirt6841
    @mohamedhassenetetbirt6841 Рік тому

    Amazing work, helped me fix small confusions

  • @dipneupane3179
    @dipneupane3179 Рік тому

    You explained it so easily. Thanks for the effort.

  • @robgioeli
    @robgioeli 9 місяців тому

    The intro music and clip-of-content before the explanation video starts is gold. You should start doing this again.

  • @MehediHassan-pn5uc
    @MehediHassan-pn5uc Рік тому

    Really Love All Your Videos ❤️

  • @sarmunbustillo9217
    @sarmunbustillo9217 Рік тому

    Uff what an explanation! Really good video!

  • @georgekrax
    @georgekrax Рік тому +1

    We needed a video like this 🙏

  • @mtin79
    @mtin79 Рік тому +3

    Awesome, would love the same for remix run!

  • @victorbrown3155
    @victorbrown3155 8 місяців тому +1

    We really need this for app router as well. Especially how navigation works!

  • @faraonch
    @faraonch Рік тому

    Thanks for this. Will just send it to all my colleagues who are asking me over and over again why I almost always choose NextJS. The cons are no cons, as I can opt out easily but still getting all the benefits especially as you mentioned the f##!@# developer experience, live reload and the option to have everything without hacking it on my own.

  • @elhaambasheerch7058
    @elhaambasheerch7058 Рік тому

    Great video! You just earned a sub theo.

  • @eliuddyn
    @eliuddyn Рік тому

    Amazing explanation 🔥🔥

  • @artemiygolden2853
    @artemiygolden2853 Рік тому +18

    The best lectures I've seen were given by professors using a blackboard. It just occurred to me that you archive the same greatness by using Excalidraw!
    Amaizingly clear and useful content! Thanks a lot!

  • @FernandoJaramillo-jw7nm
    @FernandoJaramillo-jw7nm 5 місяців тому

    Very nice explanation, Thank you...!

  • @JoelMathewmatgoogle
    @JoelMathewmatgoogle Рік тому +1

    Thank you for this!

  • @PaulTiberghien
    @PaulTiberghien День тому

    What a gem of a video! Thanks for this.

  • @AsheAve
    @AsheAve 8 місяців тому

    Nice explanation. Thank you.

  • @ragnarlothbrook8117
    @ragnarlothbrook8117 11 місяців тому

    awesome video! Thanks 👍🏻

  • @samuelgunter
    @samuelgunter Рік тому +17

    14:00 The card preview has been disabled for everyone since April 2022 because the styling of the validator was different from the actual website

    • @doritoflake9375
      @doritoflake9375 Рік тому +1

      Thanks for sharing! I suddenly started seeing this as well recently on my sites and was wondering what broke lol

    • @t3dotgg
      @t3dotgg  Рік тому +4

      This is super good to know thank you

  • @user-ux9ud7gf6q
    @user-ux9ud7gf6q Рік тому

    This is soo good. Thanks !

  • @austincodes
    @austincodes Рік тому

    One of the huge things that is overlooked with nextJs is the build tools

  • @georixyo7115
    @georixyo7115 Рік тому

    genius explanation, thanks!

  • @prasad_yt
    @prasad_yt Рік тому

    Thanks for this helpful video.

  • @oscardasilva971
    @oscardasilva971 Рік тому

    Valuable content, thank you

  • @tastelikecrypto7051
    @tastelikecrypto7051 Рік тому

    The way I understood it is next js is aiming to do what Angular does. Thanks for the content.

  • @anuragk6722
    @anuragk6722 Рік тому

    awesome video, wondering which software you use to record the screen and your face?

  • @aaronmendez9284
    @aaronmendez9284 Рік тому +2

    The sun is energy.
    There is life on Earth.
    This video slaps.
    We all will pay taxes.
    These are nothing but straight facts.
    Great content Theo!

  • @paulyi9365
    @paulyi9365 Рік тому +6

    Great video as always! I’ve only been working as a software eng for two years, so I’m always listening to your VODs!
    I was wondering if you could talk about mobile app development a bit more in depth (I saw your Code Wars working with Flutter, but I’d love to see you take a deep dive on React Native)

  • @bryanngen5572
    @bryanngen5572 Рік тому

    i watched this video when it first came out and again last night. got much more out of it after getting my hands dirty with Next
    great video

  • @mmgordion
    @mmgordion Рік тому +9

    You forgot to mention that because of nextjs's server we can also create a minimal backend api, which is extremely useful for small fullstack projects. It is also something that only nextjs has, comparing to vite and CRA.

  • @dixztube
    @dixztube Рік тому

    Great job man!!

  • @NuanceWebsites
    @NuanceWebsites 11 місяців тому

    you deserve a Nobel Peace prize for this youtube channel

  • @tuktuk9004
    @tuktuk9004 Рік тому

    great explanation

  • @berkaycirak
    @berkaycirak Рік тому

    Thanks for sharing, you have mentioned that when browser requests to next server, next will execute getServerSideProps and then react will use those props. However, we can use getStaticPaths function to serve all dynamic routes pre-rendered HTML in built time. In that case, when a user requests to next server, will next server execute some react or just sending the pre-rendered HTML in built time instead of runtime?

  • @pedroalonsoms
    @pedroalonsoms Рік тому

    your videos are awesome❤

  • @msrini
    @msrini Рік тому +1

    Good video editing

  • @sidwebworks9871
    @sidwebworks9871 Рік тому +11

    I think the video title should be "How SSR/SSG works?".
    Also I would argue that a Next app is a multi-page application because the client still requests a new page when you visit a new route, it's just that the next router and hydration patterns makes it "feel like a SPA". It's not really a SPA.
    Anyways good video.

    • @rico454
      @rico454 Рік тому +2

      It is an SPA.
      _app only mounts once and handles all page routing so _app is the single page.
      NextJs just handles it quite cleverly making everything seem less.
      But you are right, the title of the video was confusing since I was expecting a deep dive into how the framework was built.

    • @sidwebworks9871
      @sidwebworks9871 Рік тому +1

      @@rico454 What you said is true and yes I think the terms are usually juggled around.
      Although it looks like MDN defines a SPA as an application which loads a single document page and updates that document's body using javascript.
      You can look it up.
      AFAIK it's neither of those 2, it's a Hybrid react framework.

    • @sitter2207
      @sitter2207 Рік тому +1

      @@sidwebworks9871 Thats what i think of when I hear SPA as well. So I'm a bit confused still. If that's not how nextjs works, then its just a MPA, that becomes SPA after html is requested, why not just become a static page at this point ? Isn't being SPA the biggest selling point of... well single page applications ? Because it makes navigating through pages so much faster. But next loses that ability by requesting the server side rendered html at every route change.
      I feel so dumb for not understanding the point of nextjs but im also still a beginner

    • @rico454
      @rico454 Рік тому

      @@sidwebworks9871 Maybe I’m confused but doesn’t Next adhere to that criteria? _app is loaded once and everything else is loaded with javascript, whether it’s static or SSR?
      Well that’s how I assume it works, I might be wrong

  • @voidmind
    @voidmind Рік тому

    I will also use this video to answer questions

  • @jazsouf
    @jazsouf 9 місяців тому

    Next also has some caching mechanisms that can be good or bad. You don't get that with a regular Vite React SPA.

  • @techne_
    @techne_ Рік тому +2

    I REALLY need a perfect SEO. I have just dumped NuxtJs which was terrible and I am in love with NextJS. Even tho it will take me a couple of months to rewrite I already see it will be smoother overall.

  • @johndoyle3816
    @johndoyle3816 Рік тому

    sick painting

  • @i-am-the-slime
    @i-am-the-slime Рік тому

    Would've been nice if you had explained how Nextjs works like with bundle splitting etc.

  • @jjrise
    @jjrise Рік тому

    dang, solid video!

  • @OhDevBeard
    @OhDevBeard Рік тому

    Hey Theo, video on upgrading T3 app to use the app directory update of nextjs next? Why? Just because!

  • @venus-sz2sl
    @venus-sz2sl Рік тому

    Love the thumbnail 🤣😍

  • @pablom8854
    @pablom8854 9 місяців тому +1

    22:13 basically React explained in one phrase 😂

  • @stvlley
    @stvlley Рік тому +1

    when I see your videos I feel I am being assigned homework... "if you wanna get good at this you better watch his video"

  • @coder1122
    @coder1122 Рік тому +1

    Just awesome

  • @excalidraw
    @excalidraw Рік тому +3

    3:40 Shift-Opt-drag your line to duplicate on the same position and drag it on the vertical/horizontal axis 📎📄

  • @yogiadianta1156
    @yogiadianta1156 Рік тому

    Hey theo, where can i found your vs code setting and extension list?

  • @joepetrillo6185
    @joepetrillo6185 Рік тому

    How does NextJS handle links to other pages? Will the page its going to act like a normal react app (instant switch) if there is no server side rendering? What if the page its going to is static?

  • @MrStanley85
    @MrStanley85 Рік тому

    I had a hard laugh on "servers dont have windows because they run linux" :D excited about t3 stack

  • @GeekOverdose
    @GeekOverdose Рік тому

    I wanna see if its possible to have React SSR with something like Spring boot

  • @davorinrusevljan6440
    @davorinrusevljan6440 Рік тому

    I am still trying to wrap my mind about what happens when page contains components that can not be rendered on server, how does all that gets stitched up. I guess at best there would be holes, or place holders for client side to fill in?

  • @guillermoquiros2402
    @guillermoquiros2402 Рік тому

    Just Great!

  • @KevinOfSteel
    @KevinOfSteel 8 місяців тому

    Great explanation! Just not gonna ask any questions to avoid being outright stupid.

  • @deamorta6117
    @deamorta6117 Рік тому

    Your voice sound really arrogant but you really are a good teacher which negate the latter hahaha thank you so much

  • @user-ge2vc3rl1n
    @user-ge2vc3rl1n Рік тому +2

    How do you learn stuff like this? I know I learned it from you but how do you find resources to learn things like this.
    Some apps like Next have documentation that is extremely insightful but nowhere in the React docs would I have learned how react actually works.

  • @TheUltimateGeminiHasSurvived

    I shared this with my co op student! Can you make the same for Astro?

  • @SamyarBorder
    @SamyarBorder Рік тому

    How nextJS optimizes application for SEO? so if it's steel spa why we can't have good seo with cra?

  • @harshilparmar9076
    @harshilparmar9076 Рік тому

    So if we don't use getServerSideprops it will still generate static html for us but for data fetching it just works like Client side React. Am I correct?

  • @mike110111
    @mike110111 Рік тому

    I'm confused - I've been following along with your T3 Stack Tutorial (I'm up to the part where we show user details in each tweet) and the page is definitely hydrating on load, the initial HTML is just a skeleton... Which seems to contradict what this video is saying?

  • @nroose
    @nroose Рік тому

    Next can't do all of the things that can be in "this is next". The server could serve the original page with some parts that are based on cookies, etc.

  • @persas1683
    @persas1683 Рік тому

    Hi everyone, am I missing a part, or is this video simply explaining that NextJS will take care of the server-side processing through getServerSideProps and return the rendered HTML as a result.
    After the HTML has been returned to the client, the next part is entirely in react.

  • @henrmota
    @henrmota 6 місяців тому +1

    You should do the same for the new version....

  • @samuelgunter
    @samuelgunter Рік тому +13

    amazing video

    • @samuelgunter
      @samuelgunter Рік тому +7

      probably, I haven't finished watching it yet

    • @samuelgunter
      @samuelgunter Рік тому +2

      my hypothesis was correct
      (I watch at 2x speed)

  • @lightninginmyhands4878
    @lightninginmyhands4878 Рік тому

    React = interactive sites
    Next = HTML correct for sites as soon as they load

  • @niksatan
    @niksatan Рік тому +3

    Dude, you are the best in making this voodoo technologies accessible to n00bs, thx!

  • @apratimjaiswal
    @apratimjaiswal Рік тому

    Amazing

  • @mrxcreamy10
    @mrxcreamy10 11 місяців тому

    What does React Native do with expo?

  • @MrJgracias
    @MrJgracias Рік тому

    Many newer developers are running in development. Local host and all that, personally I have made a call to local storage in dev mode, and the program works fine. Will that not work in production?

  • @notfadeaway6617
    @notfadeaway6617 Рік тому

    Why some people still use firestore on SSR? What are the benefits?

  • @nan5715
    @nan5715 2 місяці тому

    Explain how next js is a spa? If I request a different server side page then it has to go to the server right? The entire app isn’t loaded on the client?

  • @cameronratliff8441
    @cameronratliff8441 Рік тому

    we have nest js backend and are looking to move to next js on the front end (from CRA). Server components seem really cool and powerful, but I am trying to wrap my head around how they can be used with an API and without bypassing guards. Any tips?

    • @zhongtom2625
      @zhongtom2625 11 місяців тому

      Do you mean bringing client credentials, such as tokens, when the server component making requests?

  • @nroose
    @nroose Рік тому

    I guess I would say "incomplete" rather than "incorrect" for the initial html.

  • @AndrewTSq
    @AndrewTSq Рік тому +2

    Is PHP considered server side rendering?

    • @mqix3741
      @mqix3741 Рік тому +2

      Yes its its whole purpose

    • @magne6049
      @magne6049 Рік тому

      PHP and the likes do "classic server-rendered templates", but SSR is generally used to refer to rendering an SPA on the server. Using SSR for the former can be confusing, albeit semantically correct.

  • @MrBlazzerBoy
    @MrBlazzerBoy Рік тому

    The font is hard to read on an 8 inch tablet. Can you please switch to some sans serif font?

  • @luisllaboj
    @luisllaboj 9 місяців тому

    I've been learnig NEXTjs for almost a week reading the Pages Router docs, and there's something that still doesn't make sense in my head.... When a page that was rendered on the server gets to the client as a Loading state or as an UI skeleton, does that mean that the server have a "correct" but empty HTML version of what the user gets after the client fetches and loads the data? Only then the user gets the 2nd correct but complete version of the same HTML page?
    Idk if that's clear enough, hopefully it is..

  • @albertgao7256
    @albertgao7256 Рік тому +1

    the only benefit of SSR compare to a SPA with router level prefetching is the real 1st time load, right after, SSR has no benefit, and might make your app slow, depends on how you setup your infranstruture. Browser caches all the assets for you, no more downloading, that page rendering is instant, you just need to solve the data prefetching part.
    not to mention the unsolveable TTI problem in SSR approach, you have to load js for SSR app too. for highly interactive app, SPA is sigficantly easier to build than SSR. Give the illusion of the page is interatable while it is just a fake HTML from SSR is a disaster for low speed network speed, learnt it the hard way.
    What most SaaS needs is not fully SSR, is SSG for non-auth part and SPA for after-auth part, better to deploy your frontend on the edge with static assets ONLY. Scales way better than blindly deploy your backend "function" on the edge while your DB is not, not to mention, your frontend app deploys on Vercel and SSR over there.... completely performance disasterer...

  • @msl6384
    @msl6384 Рік тому

    nice intro

  • @nan5715
    @nan5715 2 місяці тому

    What does it mean by correct html?

  • @Lambda1235
    @Lambda1235 Рік тому

    Can this be used to obscure the api of the admin page?
    If an attacker tries to load the admin page without auth he wouldn't even know what js he should load, which would know how to interact with the api. Am i correct?

    • @m0rt068
      @m0rt068 Рік тому

      I don't know what you mean but serious information or data should always come from a secured api. You shouldn't just hide sensitive information in your client side app but should also secure your backend.
      Always verify who the user is in your backend before you send that data to your frontend. Doesn't matter what you are using this shouldn't be problem.

  • @dhananjaysingh4945
    @dhananjaysingh4945 Рік тому +3

    Please make a t3 stack SERIES ... explaining the what is what. I am so confused.

  • @JLarky
    @JLarky Рік тому

    24:31 I disagree, otherwise how come next.js ships bundle that is like 2x the size of comparable React+vite SPA?

  • @Aristocrator
    @Aristocrator 2 місяці тому

    Why not to put an actual html into the react root page instread?

  • @bradtramel9467
    @bradtramel9467 Рік тому

    jesus christ... I finally understand