/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 vote371 views1 answer
Set navigation drawer to open by default react native
Javascript React
0 vote402 views1 answer
React looping hooks to display in other hook
Javascript React
2 votes375 views1 answer
How to align text inside react component
Javascript React
0 vote394 views1 answer
React hooks component re render when button press
Javascript React
0 vote399 views1 answer
Highcharts react hide data point dots
Javascript React
0 vote418 views2 answers
React native bordered image drop with shadow fix
Javascript React
1 vote379 views1 answer
Inline z-index react
Javascript React
0 vote370 views1 answer
Float right react native
Javascript React
-1 vote414 views1 answer
Paypal in react js
Javascript React
0 vote387 views1 answer
Remove stack header bottom line react native
Javascript React