/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

0 vote141 views1 answer
Document is not defined react router
Javascript React
2 votes155 views1 answer
Yarn create react-app test00h00m00s 0/0: : ERROR: [Errno 2] No such file or directory: 'create'
Javascript React
0 vote191 views1 answer
React measure page load time
Javascript React
0 vote228 views1 answer
Connect react with database server
Javascript React
0 vote199 views2 answers
Batch react-redux
Javascript React
0 vote211 views2 answers
React materialize cdn
Javascript React
0 vote205 views1 answer
Refresh page by hand in react
Javascript React
5 votes191 views2 answers
TypeError: t is not a function React
Javascript React
1 vote209 views2 answers
Open websute react native
Javascript React
7 votes211 views1 answer
Firebase react js
Javascript React