Just waiting for 12:00:00 hours React video to come By the way I have watched all the web development courses you’ve been uploading. Thanks bro because of you i can understand and learn web dev. Big heart for BRO ARMY 💜💜💜💜💜
so we can conclude that even if we stop the countdown for a couple of minutes still the time in between when we restart still gonna carry over because we based our elapsed time only on a date?
So, technicaly, timer re-renders every 10 miliseconds, just because of changing useState variable "elapsedTime" in Stopwatch component, what provide full re-render of Stopwatch component? Or re-render happens as a result of changing that useState variable "elapsedTime", which is mentioned in function "formatTime", which (this function) is mapped to timer component? And because of this bound React re-renders component? Can someone explain me this technical details?
every useState update causes a re-render. So in a case like this, where you have to re-render a lot, it would be best to try and make the part of your app that relies on that state as simple and tiny as possible, so you don't re-render more parts of your app than you have to.
ye but atleast he has something to post about and i think he is gonna get alot of views because lot of people want to learn lua for game dev in roblox and there is not a good course to learning it so he will be the first
Bro please i need help I just started learning jave script and I'm watching your full course so when I linked my css ,js and HTML and tried the same code that you wrote and opened it with live server nothing appeared on the web and its console it says error404 Sorry for my poor words I hope that you understand what I mean, thanks
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
import Stopwatch from './Stopwatch.jsx';
function App() {
return ();
}
export default App;
import React, {useState, useEffect, useRef} from 'react';
function Stopwatch(){
const [isRunning, setIsRunning] = useState(false);
const [elapsedTime, setElapsedTime] = useState(0);
const intervalIdRef = useRef(null);
const startTimeRef = useRef(0);
useEffect(() => {
if(isRunning){
intervalIdRef.current = setInterval(() => {
setElapsedTime(Date.now() - startTimeRef.current);
}, 10);
}
return () => {
clearInterval(intervalIdRef.current);
}
}, [isRunning]);
function start(){
setIsRunning(true);
startTimeRef.current = Date.now() - elapsedTime;
}
function stop(){
setIsRunning(false);
}
function reset(){
setElapsedTime(0);
setIsRunning(false);
}
function formatTime(){
let hours = Math.floor(elapsedTime / (1000 * 60 * 60));
let minutes = Math.floor(elapsedTime / (1000 * 60) % 60);
let seconds = Math.floor(elapsedTime / (1000) % 60);
let milliseconds = Math.floor((elapsedTime % 1000) / 10);
hours = String(hours).padStart(2, "0");
minutes = String(minutes).padStart(2, "0");
seconds = String(seconds).padStart(2, "0");
milliseconds = String(milliseconds).padStart(2, "0");
return `${minutes}:${seconds}:${milliseconds}`;
}
return(
{formatTime()}
Start
Stop
Reset
);
}
export default Stopwatch
body{
display: flex;
flex-direction: column;
align-items: center;
background-color: hsl(0, 0%, 95%);
}
.stopwatch{
display: flex;
flex-direction: column;
align-items: center;
border: 5px solid;
border-radius: 50px;
background-color: white;
padding: 30px;
}
.display{
font-size: 5rem;
font-family: monospace;
font-weight: bold;
color: hsl(0, 0%, 30%);
text-shadow: 2px 2px 2px hsla(0, 0%, 0%, 0.75);
margin-bottom: 25px;
}
.controls button{
font-size: 1.5rem;
font-weight: bold;
padding: 10px 20px;
margin: 5px;
min-width: 125px;
border: none;
border-radius: 10px;
cursor: pointer;
color: white;
transition: background-color 0.5s ease;
}
.start-button{
background-color: hsl(115, 100%, 40%);
}
.start-button:hover{
background-color: hsl(115, 100%, 35%);
}
.stop-button{
background-color: hsl(10, 90%, 50%);
}
.stop-button:hover{
background-color: hsl(10, 90%, 45%);
}
.reset-button{
background-color: hsl(205, 90%, 60%);
}
.reset-button:hover{
background-color: hsl(205, 90%, 55%);
}
hey Bro Code can you make a course about lua @BroCodez
i dont think he plays roblox lil bro@@RealRower1
Where are u code bro help me with angular js..... Missing u bro mava
Bro can you do Kali Linux ?
Best project tutorial ever! simple and to the point, thanks Bro
Thanks a lot, i completed your react course today, i learned alot from your tutorials, keep making new videos! 👍👍👍
So this bro gets 830 views while dancing toys get millions what a shame
Let the good things be with us 😁
You beautiful man, keep adding to this playlist
Just waiting for 12:00:00 hours React video to come
By the way I have watched all the web development courses you’ve been uploading.
Thanks bro because of you i can understand and learn web dev.
Big heart for BRO ARMY 💜💜💜💜💜
Its over, it is only 4h. :D
Respect and love,brother.
timer func is really crazy with setInterval
Bro you drop ur crown 👑❤
Thanks a lot bro, keep making new videos, please make a tutorials on node.js and express.js!
Please make Reactjs projects as well
Keep it up! Appreciate the efforts
BRO CAN WE GO AHEAD OF THIS NOW!!!! PLEAASEE
superb tutorial bro
bro are bringing backend development also
Bro continue the react series, enjoying it try to upload next videos faster
Baga cheppara bro
Hi, I am based in the USA.I really love your videos and they are interview oriented.
Can you explain why you used useRef variable?
useRef is used to stop re-rendering your component when the variable(ref) is changed, which is not possible using useState().
bro start next js using JavaScript waiting to learn from your channel
Hi Bro....Please make more videos.
hey bro
can u make a course about laravel for beginners
u r so good and now i only can learn anything from you
thanks a lot
Thanks man. Helped a lot
Thank you bro!
True Chad bro..❤
please sir make a playlist on PANDAS, NUMPY please🌸
🌺🌼
Sir please upload react form validations
why elapsed time declared as a state variable? cannot use ref variable instead??
I want more react videos
so we can conclude that even if we stop the countdown for a couple of minutes still the time in between when we restart still gonna carry over because we based our elapsed time only on a date?
So, technicaly, timer re-renders every 10 miliseconds, just because of changing useState variable "elapsedTime" in Stopwatch component, what provide full re-render of Stopwatch component?
Or re-render happens as a result of changing that useState variable "elapsedTime", which is mentioned in function "formatTime", which (this function) is mapped to timer component? And because of this bound React re-renders component?
Can someone explain me this technical details?
every useState update causes a re-render. So in a case like this, where you have to re-render a lot, it would be best to try and make the part of your app that relies on that state as simple and tiny as possible, so you don't re-render more parts of your app than you have to.
can you make redux tutorial
hey bro code I am facing difficulties while learning js what should i do?
look at the documentation on JS, maybe it will help
Mbuf
bro, please do C# on NET. development
hey Bro Code can you make a course about lua
ye but atleast he has something to post about and i think he is gonna get alot of views because lot of people want to learn lua for game dev in roblox and there is not a good course to learning it so he will be the first
Is it full course?
Make java 2024 plz bro code love from Nepal 💓💓
Bro please i need help I just started learning jave script and I'm watching your full course so when I linked my css ,js and HTML and tried the same code that you wrote and opened it with live server nothing appeared on the web and its console it says error404
Sorry for my poor words
I hope that you understand what I mean, thanks
did u install live server?
bro advance topics please
Hello, I'm a beginner I wonder what app you use, is it html or eclipse?
this is VSCode
bro how many languages do you know
Hey i just wanted to say your last 5 videos don't appear in my sub feed. What is going on
Do u tutor
Bring parallax plz