Ask Your Question

What is the reason for the React page not being re-rendered when setState is called?

asked 2022-01-30 11:00:00 +0000

woof gravatar image

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2023-01-20 03:00:00 +0000

ladyg gravatar image

This can happen due to various reasons, some of the most common ones are:

  1. The state value being set is the same as the existing one, so React skips rendering
  2. The component where setState is called is not subscribed to that state value, so it doesn't re-render
  3. There may be an error in the code that prevents the component from re-rendering properly
  4. The setState may have been called outside of the React lifecycle events.

To identify the issue, developers can check the component's lifecycle methods such as shouldComponentUpdate, componentDidUpdate or componentWillUpdate, and verify how the setState function is being called. Additionally, they can consider using React Developer Tools to see the state and props of the component and their changes as they happen.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss

Add Answer

Question Tools


Asked: 2022-01-30 11:00:00 +0000

Seen: 8 times

Last updated: Jan 20 '23