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ReactJS useState

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Wild Zephyr answered on April 3, 2020 Popularity 9/10 Helpfulness 4/10

answer ReactJS useState

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ReactJS useState

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// SampleButton.js

import { useState } from 'react';

export default function SampleButton() {
  const [count, setCount] = useState(0) // count is initialized to 0
  
  function handleClick() {
    setCount(count + 1);
  }
  
  return (
    <button onClick={handleClick}>
  		Times clicked: {count} {/* label updates after each click */}
    </button>
  )
}

// Documentation: https://react.dev/learn/state-a-components-memory

Popularity 9/10 Helpfulness 4/10 Language javascript

Source: react.dev

Tags: javascript reactjs use-state

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Contributed on Jun 17 2024

Wild Zephyr

0 Answers Avg Quality 2/10

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usestate react

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import React, { useState } from 'react'
import { render } from 'react-dom'

const randomDiceRoll = () => {
  return Math.floor(Math.random() * 6) + 1
}

export default function App() {
  const [diceRolls, setDiceRolls] = useState([1, 2, 3])

  return (
    <div>
      <button
        onClick={() => {
          setDiceRolls([...diceRolls, randomDiceRoll()])
        }}
      >
        Roll dice
      </button>
      <ul>
        {diceRolls.map((diceRoll, index) => (
          <li key={index}>{diceRoll}</li>
        ))}
      </ul>
    </div>
  )
}

render(<App />, document.querySelector('#app'))

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: www.react.express

Tags: hook

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Contributed on Nov 08 2022

Mehedi Islam Ripon

0 Answers Avg Quality 2/10

react usestate

Comments(1)

const [count, setCount] = React.useState(0);
  const [count2, setCount2] = React.useState(0);

  // increments count by 1 when first button clicked
  function handleClick(){
    setCount(count + 1);
  } 

  // increments count2 by 1 when second button clicked
  function handleClick2(){
    setCount2(count2 + 1);
  } 

  return (
    <div>
      <h2>A React counter made with the useState Hook!</h2>
      <p>You clicked {count} times</p>
      <p>You clicked {count2} times</p>
      <button onClick={handleClick}>
        Click me
      </button> 
      <button onClick={handleClick2}>
        Click me2
      </button>
  );

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Oct 26 2021

Cheerful Cardinal

0 Answers Avg Quality 2/10

useState

Comment

1:  import React, { useState } from 'react';
 2:
 3:  function Example() {
 4:    const [count, setCount] = useState(0);
 5:
 6:    return (
 7:      <div>
 8:        <p>You clicked {count} times</p>
 9:        <button onClick={() => setCount(count + 1)}>
10:         Click me
11:        </button>
12:      </div>
13:    );
14:  }

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Sep 01 2022

Quaint Quail

0 Answers Avg Quality 2/10

usestate

Comment

import React, { useState } from 'react';

function Example() {
  	// Declare a new state variable, which we'll call "count"  

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

    return (
      <div>
        <p>You clicked {count} times</p>
        <button onClick={() => setCount(count + 1)}>
          Click me
        </button>
      </div>
    );
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Aug 31 2021

Noob Learner

0 Answers Avg Quality 2/10

usestate react

Comment

import React, { useState } from 'react';

function Example() {
	
  const [count, setCount] = useState(0);
  
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Jan 24 2021

Breakable Batfish

0 Answers Avg Quality 2/10

usestate react

Comment

//The useState Hook
//useState is a Hook that lets you 
//add React state to function components.
//after a state is changed, the page is rerendered, refecting
//the state change

import React, { useState } from 'react';

function Example() {
  // here we declare the state variable count 
  //and its function or 'setter', setCount
  
  const [count, setCount] = useState(0);
  //It returns a pair of values: the current state(count)
  //and a function that updates it(setCount)
  return (
    <div>
      <p>You clicked {count} times</p>
		//{*setCount is the function that updates the value*}
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: reactjs.org

Tags: hook

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Contributed on Dec 02 2022

Jeremy L

0 Answers Avg Quality 2/10

react js usestate

Comment

// Hooks are a new addition in React 16.8. They let you use state and other React features without writing a class.

import React, { useState } from 'react';

function Example() {
  // Declare a new state variable, which we'll call "count"
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on Jun 27 2022

scooby-doo

0 Answers Avg Quality 2/10

react hook usestate

Comment

function Counter({initialCount}) {
  const [count, setCount] = useState(initialCount);
  return (
    <>
      Count: {count}
      <button onClick={() => setCount(initialCount)}>Reset</button>
      <button onClick={() => setCount(prevCount => prevCount - 1)}>-</button>
      <button onClick={() => setCount(prevCount => prevCount + 1)}>+</button>
    </>
  );
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: reactjs.org

Tags: hook

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Contributed on Apr 03 2020

POG

0 Answers Avg Quality 2/10

useState

Comment

Using the State Hook

import React, { useState } from 'react';

function Example() {
  // Declare a new state variable, which we'll call "count"
  const [count, setCount] = useState(0);

  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Popularity 9/10 Helpfulness 3/10 Language typescript

Source: Grepper

Tags: typescript t

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Contributed on Feb 03 2023

Olexxandr_S

0 Answers Avg Quality 2/10

ReactJS useState

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