Top "Setstate" questions

How to update nested state properties in React

I'm trying to organize my state by using nested property like this: this.state = { someProperty: { flag:true } } But updating state …

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When to use React setState callback

When a react component state changes, the render method is called. Hence for any state change, an action can be …

reactjs callback setstate

ReactJS: Warning: setState(...): Cannot update during an existing state transition

I am trying to refactor the following code from my render view: <Button href="#" active={!this.state.singleJourney} onClick={…

reactjs constructor setstate

Can't perform a React state update on an unmounted component

Problem I am writing an application in React and was unable to avoid a super common pitfall, which is calling …

javascript reactjs typescript lodash setstate

Can I execute a function after setState is finished updating?

I am very new to ReactJS (as in, just started today). I don't quite understand how setState works. I am …

javascript reactjs setstate

React setState not updating state

So I have this: let total = newDealersDeckTotal.reduce(function(a, b) { return a + b; }, 0); console.log(total, 'tittal'); //outputs correct …

javascript reactjs state setstate

React setState not Updating Immediately

I'm working on a todo application. This is a very simplified version of the offending code. I have a checkbox: &…

reactjs redux state setstate

setState() or markNeedsBuild called during build

class MyHome extends StatefulWidget { @override State<StatefulWidget> createState() => new MyHomePage2(); } class MyHomePage2 extends State<MyHome> { …

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React setState/getState and asynchronous

Why there is no async getState function in React ? Documentation tel us that setState is async. Fine, but that means …

reactjs asynchronous setstate getstate

Does React keep the order for state updates?

I know that React may perform state updates asynchronously and in batch for performance optimization. Therefore you can never trust …

javascript reactjs state setstate