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multiple `setState` calls in async callbacks trigger multilple updates #16377
Do you want to request a feature or report a bug?
What is the current behavior?
If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem. Your bug will get fixed much faster if we can run your code and it doesn't have dependencies other than React. Paste the link to your JSFiddle (https://jsfiddle.net/Luktwrdm/) or CodeSandbox (https://codesandbox.io/s/new) example below:
Click 'sync' button,
Click 'async' button,
What is the expected behavior?
Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
You can use
If you inspect the console and compare the two codesandbox examples you should see a difference.
By update I mean how many times the
The usage of
@TroyTae please read the tweet itself:
It means that