/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

1 vote190 views1 answer
Module not found reactstrap
Javascript React
0 vote194 views1 answer
Formdata append react js
Javascript React
2 votes186 views1 answer
How to get current URL with Javascript or React
Javascript React
19 votes290 views6 answers
Convert svg to react component
Javascript React
1 vote197 views1 answer
Handling scrolling on react router transitions
Javascript React
3 votes177 views1 answer
React native netinfo
Javascript React
3 votes232 views3 answers
Adding donet chart text center in react
Javascript React
-2 votes185 views1 answer
React native generate signed apk getting older version
Javascript React
0 vote236 views1 answer
How to hide title bar react-navigation
Javascript React
0 vote177 views1 answer
Content uri react native fs
Javascript React