reactjs / reactjs/react.dev

More clarification on updating Objects in state

Open
#5,520 1 comment 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
JavaScript
Stars
11.8k
Forks
7.9k
Avg merge
1d 11h
Merged PRs (30d)
11

Description

here in the current beta docs of updating objects in react, we are just told to treat objects as read only and never try to mutate them but what are the exact tradeoffs if we try to mutate the existing state Object, i am quite confused and may be this requires a brief explanation

Like i have a sandbox below where it tries to just mutate the object directly and it works as expected

https://codesandbox.io/s/kind-poincare-k4g8uh?file=/App.js

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked beta documentation page, updating objects in state, and review the linked CodeSandbox example showing direct mutation. Clarify the exact tradeoffs of mutating an existing state object versus treating it as read-only, so the page explains why the recommended approach matters while addressing the example that appears to work.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, react
Domain
documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.