/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 vote199 views1 answer
Scrollreveal react tutoriel
Javascript React
-1 vote248 views1 answer
Component navigation without changin the url react router
Javascript React
0 vote165 views1 answer
How to define cardTitle background image in mdl in reactjs
Javascript React
0 vote218 views1 answer
Npm ERR! peer react@"^15.x.x" from [email protected]
Javascript React
0 vote223 views1 answer
React simple typewriter
Javascript React
21 votes159 views3 answers
Hide header bar react navigation
Javascript React
0 vote227 views1 answer
Relative width and height image react native
Javascript React
5 votes210 views2 answers
Get url query in react
Javascript React
1 vote266 views1 answer
How to authenticate token in react using axios
Javascript React
1 vote210 views2 answers
Prevstate in react
Javascript React