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How to use React useState Hook

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Gabriele Orlandi answered on April 3, 2020 Popularity 10/10 Helpfulness 2/10

answer How to use React useState Hook

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How to use React useState Hook

Comment

useState - Has the main purpose to change an element status
useState basically helps React to know what to elements need to be rerendered. 

Ex: We have a post                 (state: it is displayed) 
    You want to eliminate the post (setState: it is not displayed)

Code Ex.:
const [blogs, setBlogs] = useState([  
    { title: 'React forever', body:'Lorem ipsum...', author: 'Sara', id: 1 },
    { title: 'Vue kinda sucks', body:'Lorem ipsum...', author: 'Tony', id: 2 },
    { title: 'Angular lets not go there', body:'Lorem ipsum...', author: 'John', id: 3 },
  	]);

// The JS function that filters all the post with diff. id from the id of the post clicked
const handleDelete = (id) => {
  const newBlogs = blogs.filter(blog => blog.id !== id);
    setBlogs(newBlogs);
  }

// React renders the following JSX
return (
    <div className="blog-list">
      <h2>{ title }</h2>
        {blogs.map((blog) => (
          <div className="blog-preview" key={blog.id}>
            <h3>{ blog.title }</h3>
            <p>written by { blog.author }</p>
            <p>{ blog.body }</p> 
            <button onClick={() => handleDelete(blog.id)} className="hideBtn">Hide Post</button>
          </div>
        ))}
    </div>
    );

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: hook javascript use-state

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Contributed on Aug 31 2022

Gabriele Orlandi

0 Answers Avg Quality 2/10

Closely Related Answers

How to use useState Hook in React/ReactNative

Comment

import React, { useState } from 'react';

function StepTracker() {
  const [steps, setSteps] = useState(0);

  function increment() {
    setSteps(prevState => prevState + 1);
  }

  return (
    <div>
      Today you've taken {steps} steps!
      <br />
      <button onClick={increment}>
        I took another step
      </button>
    </div>
  );
}

ReactDOM.render(
  <StepTracker />,
  document.querySelector('#root')
);

Popularity 10/10 Helpfulness 5/10 Language javascript

Source: daveceddia.com

Tags: hook

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Contributed on Mar 25 2022

Anatu Green

0 Answers Avg Quality 2/10

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 j

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Contributed on Jun 17 2024

Wild Zephyr

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 in react

Comment

import React, { useState } from 'react';

function Counter() {
  // Define the state variable "count" and the state update function "setCount"
  const [count, setCount] = useState(0);

  const increment = () => {
    // Update the "count" state by increasing its value by 1
    setCount(count + 1);
  };

  const decrement = () => {
    // Update the "count" state by decreasing its value by 1
    setCount(count - 1);
  };

  return (
    <div>
      <h1>Counter: {count}</h1>
      <button onClick={increment}>Increment</button>
      <button onClick={decrement}>Decrement</button>
    </div>
  );
}

export default Counter;

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: chat.openai.com

Tags: javascript j

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Contributed on Aug 03 2023

Nisha Singhal

0 Answers Avg Quality 2/10

usestate in react js

Comment

import React, { useState } from "react";

const Counter = () => {
  // Here we use the useState -->
  const [count, setCount] = useState(0);

  // Here we make the function of the Count with setCount
  const onClick = () => {
    setCount(count + 1);
  };

  return (
    <div>
        <p>You Clicked {count} On The Button</p>
        <button onClick={onClick}>Click Me></button>
    </div>
  );
};

export default Counter;

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Sep 11 2022

Cody Kunal

0 Answers Avg Quality 2/10

useState Hook React

Comment

import React, { useState } from 'react';

//for boolen(true,false)
const [online,setOnline] = useState(true);
//for data (storing)
const [users,setUsers] = useState([
	{id:1,name:"John Doe"},{id:2,name:"Merry"},
]);



return(
<div classsName="container">
	<h1 className={`$online ? 'text-success' : 'text-danger' `}> green is online , red is offline </h1>
    
    <button onClick={() => setOnline(!online)}>Switch</button>
    
 </div>

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: hook

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Contributed on May 07 2023

WinMaw

0 Answers Avg Quality 2/10

How does useState work

Comment

import React, {useState} from 'react';
function Counter() {
    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 2/10 Language javascript

Source: knowledge-blog.netlify.app

Tags: javascript j

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Contributed on Apr 01 2023

Md Selim Hossain

0 Answers Avg Quality 2/10

useState in reactjs

Comment

import { useState } from "react";

const App = () => {
  const [name, setName] = useState("imran");

  const handleInputChange = (event) => {
    setName(event.target.value);
  };

  const handleRename = () => {
    // Perform any additional logic if needed
    // For now, we'll just update the name directly
    // based on the input value
    setName(name);
  };

  return (
    <div>
      <h1>{name}</h1>
      <input type="text" value={name} onChange={handleInputChange} />
      <button onClick={handleRename}>Rename</button>
    </div>
  );
};

export default App;

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: chat.openai.com

Tags: javascript j

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Contributed on Jun 16 2023

Imran Khan

0 Answers Avg Quality 2/10

How to use React useState Hook

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