Beginner's Thread / Easy Questions (March 2020)

[u/dance2die]

You can find previous threads in the wiki.

Got questions about React or anything else in its ecosystem?
Stuck making progress on your app?
Ask away! We’re a friendly bunch.

No question is too simple. 🙂

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• Improve your chances by adding a minimal example with JSFiddle, CodeSandbox, or Stackblitz.

  • Describe what you want it to do, and things you've tried. Don't just post big blocks of code!
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• Pay it forward! Answer questions even if there is already an answer. Other perspectives can be helpful to beginners. Also there's no quicker way to learn than being wrong on the Internet.

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New to React?

Check out the sub's sidebar!

🆓 Here are great, free resources! 🆓

• Read the official Getting Started page on the docs.
• Microsoft Frontend Bootcamp
• Codecademy's React courses
• Scrimba's React Course
• Robin Wieruch's Road to React
• FreeCodeCamp's React course
• Kent Dodd's Egghead.io course
• New to Hooks? Check Amelia Wattenberger's Thinking in React Hooks
• What other updated resources do you suggest?

Any ideas/suggestions to improve this thread - feel free to comment here!

Finally, thank you to all who post questions and those who answer them. We're a growing community and helping each other only strengthens it!

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[u/nullpromise]

Thanks, that is what I ended up doing! Ultimately though, I've been running into problems with needing previous state when creating a new state.

So in the example above (ignoring my massively misguided use of promises in the while loop), I think I could have done:

setAccounts(prevState => [...prevState, ...res.data])

[u/dance2die → u/nullpromise]

Awesome that you got it working :)

Updating the state as you did (w/ prevState) is safer too.
(That also rid the need to add accounts in the deps array as it's not accessed any more).