React usestate

Usestate 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>
  );
}

Source: reactjs.org

React useEffect

import React, { useEffect } from 'react';

export const App: React.FC = () => {
  
  useEffect(() => {
        
  }, [/*Here can enter some value to call again the content inside useEffect*/])
  
  return (
    <div>Use Effect!</div>
  );
}

Prevstate in usestate

const [prevState, setState] = React.useState([]);

setState(prevState => [...prevState, 'somedata'] );

Usestate in react

  const [x, setx] = useState(0);

Source: reactjs.org

Usestate react

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>
  );
}

Source: reactjs.org

React useState hook

 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:  }

Source: reactjs.org

Similar codes

0 vote339 views1 answer
React select remove the loading indicator
Javascript React
0 vote369 views1 answer
Event pooling in react/event.persist/using async function in event callback
Javascript React
0 vote355 views1 answer
Error code ELIFECYCLE REACTJs
Javascript React
0 vote413 views1 answer
Table like another component in react native
Javascript React
10 votes376 views3 answers
Jquery react npm
Javascript React
0 vote368 views1 answer
React native skeleton
Javascript React
7 votes356 views2 answers
How to pass a component as a prop in react
Javascript React
4 votes428 views2 answers
Linking in react native
Javascript React
3 votes375 views3 answers
React change url params
Javascript React
15 votes338 views6 answers
Axios react
Javascript React