/Javascript/React/Automated counter with react hooks

Automated 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

1 vote189 views1 answer
Typing refs react
Javascript React
4 votes156 views2 answers
Countdown in react js
Javascript React
0 vote151 views1 answer
How to add autoserial number in react js
Javascript React
0 vote162 views1 answer
How to use elements of 'react-router-dom'
Javascript React
4 votes155 views2 answers
React filter array from another array
Javascript React
0 vote160 views1 answer
React input mask ref
Javascript React
0 vote142 views2 answers
Toggle classname onclick react
Javascript React
0 vote145 views1 answer
Text and icon on same line react native
Javascript React
0 vote154 views1 answer
How to go specific content in react single page by id
Javascript React
0 vote230 views1 answer
Reactstrap form post
Javascript React