The useReducer React hook seems more complicated at first, but after you learn how to use it, useReducer really simplifies state management compared to tracking many different pieces of state that are all implemented with the useState hook. Once you learn about the useReducer hook, I think you will agree! Just getting started with React? If so, I recommend starting with my 9 hour full course React tutorial here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RVFAyFWO4go.html
Tried many tutorials for learning useReducer, but got confused more only. Finally I found this video which is the perfect one!! Simple, great & straight forward!
Hands down the best tutorial. I am writing this comment after watching maybe 20+ videos and that too from top youtubers, but no one really simplified this much. I just have a request, please make a medium size project using useContext for global state management and useReducer to change them. Pls.
There are a lot of great people teaching these subjects but wow you just made that simple. I just built a fullstack app and most the hold up was micromanaging pieces of state. Going to implement useReducer from here forward.
I was really having the problem of Redux stuff... But now I can understand where idea of Reducer came from but also dispatch, action and payload which looks like complicated stuff but after your explanation and I got the whole point of the thing. I am grateful of your amazing work from Uzbekistan !
It's gotten to the stage where, if i'm unsure about something I just type in "question + Dave Gray" to youtube. You have no idea how amazing it is to have a reliable source of information, when I was researching closures I came across so much conflicting information, after your video on them I vowed to make sure I looked at your videos as the main source of truth, they are clean, efficient, well explained and professional. Thanks Dave.
Thank you very much sir. I’ve been having difficulties learning the useReducer hook. I get more confused reading articles and watching other videos. But thankfully You’ve explained and broken down the what, why and usage of this particular hook. I’m so grateful it’s a thumbs up for me👍
Very good tutorial yet again Dave! Just want to say it out loud, you really make me a better programmer with every new video. And I have a suggestion for a video... You see it really hard to grasp React for a beginner (even though I came with a diff prog. language experience) because it's so not intuitive and have so many caveats in developing process, SO it would be really helpful and useFull for us beginners if you could explain React pipeline in a tutorial video. For example, how React batching works (again basics), how component initially renders, how and why it re-renders... name a few. After watching your tutorial about calling useState twice in a row and not using prev => !prev was eye opening, but on another hand new question a raised why it working that way... Another example => I didn't know that React recreates a function and ALL inside it when state/prop updates. I think beginners will praise you for such a tutorial. Anyway, thank you so much again!
Yeah exactly! I don’t know how React really works and few people bother to explain it. I’m able to use hooks and make it work somehow but that’s just improvising most of the time. When the problem I face goes beyond the typical tutorial problems, I constantly add new hooks to fix the issues that the existing hooks create, without knowing why I even need the hooks I just added. I often find myself writing 10 useStates and 5 useEffects to coordinate the states within a single component. I’m often exclusively using hooks because I can’t be sure if local variables and functions would have worked. If they do, my code would have been so much easier to read and to maintain. A tutorial on React pipeline would be very useful!
Buddy i am probably very late, as i now just started my interest in React ( company switched to some React based CRM ) , i came to thank you X milions for putting together this video, i finally understood state and it ticked in my head as now you gave me a visual representantion in my brain, please accept my thanks i wish you the best.
Great content. I implement useReducer in my project for a form that fetches values from my API to several menus, the user chooses data from the menus and the UI gets updated and the entire form data it's validated at the same time. With useState, it got pretty messy. Now with useReducer it's much better, even though my reducer function got quite long. 😀😀😀
Amazing. I was really lost in why and how to transition from useState to useReducer. Dave walks us through it step by step! Great examples and explanations! Thank you!
Thanks so much! Used this before I attempted to use useReducer in my app and then felt way more confident about what I was going to do. Your vidoes are great, really appreciate it. When I have questions about something I try to find a video from you first!
must admit, i saw at least 5 videos to understand useReducer hook. the only one that was fully understandable for me was your video ! thank you, and keep your great job at explaining fully professional topics for young devs.
This is much more comfortable to work with than using multiple useState hooks as I can manage all my states in one place, I thought for a while that we can pass any property when calling dispatch function then in the reducer we can check whatever properties we passed, I wasn't sure but after doing some research I found that we should use the type property and optionally the payload property when dispatching an action which makes things more organized, sometimes my silliness helps me understand things better, Thanks Dave,
Went through a couple videos about useReducer and was about to give up and go back to Vanilla js lol. But you explained things super well!! Thanks so much! Subbed!
Thank you so much SIr Dave I believe you are one of the best Programming instructor in the world right now all programming stuff available in your channel for beginners, intermediate and even for experts as well Thank you so much for your efforts and contribution I'm following you from last 1,2 months for ReactJS you are just amazing teacher I found on this platform Huge Love from Pakistan
Man thanks for this video it amazing video, I am from Moldova near Ukraine and my mind full of war between Ukraine and Russian, and I drank 1.5l of beer but when I started wach this video my mind forgot all problems and think about - it amazing and how simple to use it
Oh my god, thank you, I was starting to think I am dumb. But after watching just half of this video I understood the point of a reducer. Not just "how to use a reducer" but WHY use a reducer.
Coming here from NetNinja MERN course. I was stuck on the Context part where useReducer was used. This was really a great video. Great teaching, really matches with my way of learning (spoon feeding) :P. Overall, thank you professor.
i don't know whether you will see this comment or not. i just wanted to thank you for making such a high quality, easy to understand tutorial. God bless you sensei.
Man, thanks so much for explaining how to update multiple object properties in the same statement. I was pulling my hair out trying to figure out how to do what you did with the spread operator. I was changing one thing with useState and it was wiping out everything else in the object
I watched a lot of clips about useReducer and after this it is crystal clear to me so you are great and just keep it up because these are amazing videos and thank you very much for that! Big Greetings from Serbia Dave. :)
Watched this topic on Udemy course, got so confused there 😖, but your explanation is superb! You have lovely tone to your voice I could listen you for hours!
Wow! You rocked it; Thanks Dave for this super and comprehensive video. I watch the very first second of the video, and I could run the app by myself. The rest was for better understanding 😉
It's just Redux inside React. I guess Dan Abramov is the one to blame for this feature :) The only downside is that it's the oldest of the Redux patterns with a lot of boilerplate, and most importantly, you need to keep an eye on all other state, so it's not accidentally being overwritten (big downside). In my opinion, this hook must be enhanced soon. Personally, I don't like it that much because of the things I mentioned.
So the idea is to withdraw perfectly good functional programming and instead opt for additional boilerplate code? Great tutorial. This really helps me to understand use reducer. This is well made and informative.
Great vid Dave, many thanks for this. Just a couple quick questions, but I'll have a play anyway. 1. I take it when you despatch(xxx) that then does a rerender just like if you do setColor(true) 2. useEffect - if I wanted to fire off some code when the count changes I would use setCount(23) and then add a dependency on the useEffect to maybe fire off an API. Is it the same here, would we just put state.count in the useEffect dependency ?
