Treehouse | Community | Update the Players State Based on Previous State

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Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
Do we need to explicitly copy this.state instead of relying on prevState?

Posted August 9, 2022 1:54am by Tyler McDonald

Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
1 Answer
Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
Aren't we supposed to avoid updating state directly?

Posted August 8, 2022 9:52pm by Tyler McDonald

Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
1 Answer
Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
Why must we use an arrow function for onClick?

Posted August 8, 2022 6:30pm by Tyler McDonald

Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,700 Points
1 Answer
PLUS

Darren Legore
Courses Plus Student 11,231 Points
out of date - the industry is using functional components. Please can you update this course.

Posted June 16, 2022 7:58pm by Darren Legore

Darren Legore
Courses Plus Student 11,231 Points
2 Answers
karan Badhwar
Web Development Techdegree Graduate 18,135 Points
what is synthetic Events?

Posted May 20, 2022 4:55am by karan Badhwar

karan Badhwar
Web Development Techdegree Graduate 18,135 Points
0 Answers
Victor Stanciu
Full Stack JavaScript Techdegree Student 11,196 Points
[After Video Update] So why not change `handleRemovePlayer` also, since it also mutates `prevState`?

Posted March 16, 2022 8:56am by Victor Stanciu

Victor Stanciu
Full Stack JavaScript Techdegree Student 11,196 Points
0 Answers
Jiten Mehta
Front End Web Development Techdegree Graduate 21,209 Points
using forEach instead of Reduce

Posted December 16, 2021 8:48am by Jiten Mehta

Jiten Mehta
Front End Web Development Techdegree Graduate 21,209 Points
1 Answer
Francisco Paglia
773 Points
Shouldn't handleAddPlayer use a function to pass the prev. state value to the spread operator?

Posted November 5, 2021 9:15pm by Francisco Paglia

Francisco Paglia
773 Points
0 Answers
Ruell Magpayo
508 Points
accessing "score" directly from state as a member of Player allowed?

Posted September 3, 2021 4:06am by Ruell Magpayo

Ruell Magpayo
508 Points
0 Answers
Dinu Comendant
6,049 Points
confused of return {} and return()

Posted July 28, 2021 2:47pm by Dinu Comendant

Dinu Comendant
6,049 Points
0 Answers
Mahmoud Talass
9,274 Points
why didn't you use a button to make the submit button?

Posted July 18, 2021 12:30pm by Mahmoud Talass

Mahmoud Talass
9,274 Points
0 Answers
Mahmoud Talass
9,274 Points
nothing is making sense...

Posted July 18, 2021 12:23am by Mahmoud Talass

Mahmoud Talass
9,274 Points
2 Answers
Gennadii Chamorsov
9,207 Points
After setting the value of input to this.state.value the possibility of typing in there is blocked.

Posted April 20, 2021 3:32pm by Gennadii Chamorsov

Gennadii Chamorsov
9,207 Points
1 Answer
James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points
If you chose to try this course with React hooks, it can start to get tricky here. My solution if you're struggling

Posted March 20, 2021 3:41am by James Crosslin

James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points
0 Answers
James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points
Disagree with the new index prop, also my solution uses Hooks instead of classes

Posted March 19, 2021 8:34pm by James Crosslin

James Crosslin
Full Stack JavaScript Techdegree Graduate 16,882 Points
2 Answers
Eduardo Osorio
Full Stack JavaScript Techdegree Graduate 20,847 Points
I think this would be a less verbose alternative, that doesn't mutate the previous state directly.

Posted March 12, 2021 8:40pm by Eduardo Osorio

Eduardo Osorio
Full Stack JavaScript Techdegree Graduate 20,847 Points
0 Answers
Tyler Garner
1,623 Points
State Value of AddPlayerForm not updating on text input

Posted March 10, 2021 7:17pm by Tyler Garner

Tyler Garner
1,623 Points
3 Answers
cloud712
7,616 Points
Why is let index = props.index; outside of the return? Could we not use props.index within the onClick attribute?

Posted November 27, 2020 7:11am by cloud712

cloud712
7,616 Points
2 Answers
Dan Ogrodnik
15,609 Points
wondering what the pattern for best practice is when using { this.props.etc } as opposed to {this.props.etc}?

Posted October 18, 2020 11:11pm by Dan Ogrodnik

Dan Ogrodnik
15,609 Points
1 Answer
Xiang Liu
24,339 Points
What's the first blank's answer?

Posted September 28, 2020 4:09am by Xiang Liu

Xiang Liu
24,339 Points
1 Answer
erkany
7,189 Points
How name argument passing through App.js from AddPlayerForm class?

Posted July 11, 2020 11:27pm by erkany

erkany
7,189 Points
1 Answer
newwebcoder
13,061 Points
setState with "+=" instead of just "+"

Posted June 30, 2020 6:01pm by newwebcoder

newwebcoder
13,061 Points
1 Answer
Joseph Michelini
Python Development Techdegree Graduate 18,692 Points
What are the syntax rules for adding component properties in React?

Posted June 22, 2020 12:17pm by Joseph Michelini

Joseph Michelini
Python Development Techdegree Graduate 18,692 Points
1 Answer
Tetsuya Yokoyama
11,286 Points
e.preventDefault(); is not working.......

Posted May 31, 2020 7:09am by Tetsuya Yokoyama

Tetsuya Yokoyama
11,286 Points
1 Answer
Michael Cook
Full Stack JavaScript Techdegree Graduate 28,975 Points
My approach to updating score

Posted May 23, 2020 9:20pm by Michael Cook

Michael Cook
Full Stack JavaScript Techdegree Graduate 28,975 Points
1 Answer
Stheven Cabral
Full Stack JavaScript Techdegree Graduate 29,854 Points
Confused about calling a component method from another component.

Posted May 14, 2020 3:32pm by Stheven Cabral

Stheven Cabral
Full Stack JavaScript Techdegree Graduate 29,854 Points
2 Answers
Rishi B
13,866 Points
why player props are shown 'undefined'?

Posted April 18, 2020 2:30am by Rishi B

Rishi B
13,866 Points
0 Answers
Rishi B
13,866 Points
how do i get rid of 'Cannot read property 'toString' of undefined' error?

Posted April 13, 2020 1:38pm by Rishi B

Rishi B
13,866 Points
2 Answers
Marius Adam
1,736 Points
onClick 1 and -1 to 0.5 and -0.5 otherwise increment by 2???

Posted April 9, 2020 7:14pm by Marius Adam

Marius Adam
1,736 Points
4 Answers
Sharon Hartsell
4,403 Points
App Architecture Design - Standalone Components vs Lifting State Up

Posted April 7, 2020 6:57pm by Sharon Hartsell

Sharon Hartsell
4,403 Points
1 Answer

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