/Javascript/React/This setstate previous state react

This setstate previous state react

When to use previous state in useState

import React, { useState } from "react";
import ReactDOM from "react-dom";

function Counter() {
  const [count, setCount] = useState(0);

  return (
    <div>
      <h1>{count}</h1>
      <button onClick={() => setTimeout(() => setCount(count + 1), 2000)}>
        Delayed Counter (basic)
      </button>
      <button onClick={() => setTimeout(() => setCount(x => x + 1), 2000)}>
        Delayed Counter (functional)
      </button>
      <button onClick={() => setCount(count + 1)}>Immediate Counter</button>
    </div>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<Counter />, rootElement);

Source: stackoverflow.com

This setstate previous state react

state = {count: 0}

increment = () => { 
this.setState(previousState => ({
count: previousState.count + 1
}))
}

Similar codes

0 vote114 views2 answers
React filter buttons
Javascript React
0 vote168 views1 answer
How to add autoserial number in react js
Javascript React
2 votes155 views1 answer
React-native open call app
Javascript React
0 vote150 views1 answer
(0 , _reactRouterDom.useHistory) is not a function
Javascript React
0 vote171 views1 answer
Curved lines on google maps usint react
Javascript React
8 votes146 views3 answers
Change title react
Javascript React
31 votes160 views1 answer
React router dom npm
Javascript React
10 votes157 views1 answer
Dimensions react native
Javascript React
7 votes161 views1 answer
React Hook "React.useState" is called in function "placeItem" which is neither a React function component or a custom React Hook function react-hooks/rules-of-hooks
Javascript React
0 vote163 views1 answer
React-native-error-check-the-render-method-of-app
Javascript React