/Javascript/React/Counter with react hooks

Counter with react hooks

import React, { useState } from 'react';

function Example() {
  // Declaración de una variable de estado que llamaremos "count"  const [count, setCount] = useState(0);
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

Source: es.reactjs.org

Automated counter with react hooks

const { useState, useEffect, useRef } = React;

function useInterval(callback, delay) {
  const savedCallback = useRef();

  // Remember the latest callback.
  useEffect(() => {
    savedCallback.current = callback;
  }, [callback]);

  // Set up the interval.
  useEffect(() => {
    let id = setInterval(() => {
      savedCallback.current();
    }, delay);
    return () => clearInterval(id);
  }, [delay]);
}

function App() {
  const [counter, setCounter] = useState(0);

  useInterval(() => {
    setCounter(counter + 1);
  }, 1000);

  return <h1>{counter}</h1>;
};

ReactDOM.render(
  <App />,
  document.getElementById('root')
);

Source: stackoverflow.com

Similar codes

9 votes369 views2 answers
React select options
Javascript React
3 votes410 views1 answer
Showing an image in react js
Javascript React
0 vote365 views1 answer
Javascript react useState update object
Javascript React
1 vote349 views1 answer
Npm package for sorting in reactjs
Javascript React
0 vote361 views1 answer
How to align text vertically center beside an image in react native
Javascript React
1 vote353 views4 answers
React native push notifications npm
Javascript React
6 votes419 views1 answer
How to import dotenv in react
Javascript React
3 votes451 views3 answers
How to uninstall react native cli globally
Javascript React
0 vote357 views1 answer
Onpress setstate react native
Javascript React
2 votes428 views3 answers
Cdn react
Javascript React