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Error de bucle infinito de React.js (useState, useEffect) cuando se llama a setState ("valor actualizado")
import React, {useState,useEffect} from 'react'; import ReactDOM from 'react-dom'; import reportWebVitals from './reportWebVitals'; function AppTwo(props){ const [state, setState] = React.useState("initial value"); useEffect(() => { console.log(`useEffect: ${state}`); },[state]); setState("updated value"); console.log(state); return `<h1>${state}</h1>`; } ReactDOM.render( <> <AppTwo /> </>, document.getElementById('root') );

Error: demasiados renderizados. React limita el número de renderizaciones para evitar un bucle infinito.

about 4 years ago · Juan Pablo Isaza
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No llame a setState dentro del cuerpo del componente. Se actualizará cada vez que el componente se vuelva a renderizar. Es por eso que está recibiendo un ciclo infinito de actualizaciones de estado.

about 4 years ago · Juan Pablo Isaza Report

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¡OBRAS!

 import React, {useState,useEffect} from 'react'; import ReactDOM from 'react-dom'; import reportWebVitals from './reportWebVitals'; function AppTwo(props){ const [state, setState] = React.useState("initial value"); useEffect(() => { console.log(`useEffect: ${state}`); // document.getElementById('btn').innerHTML = `<h1>State: ${state}</h1>`; },[state]); console.log(state); return ( <> <h1>State: {state}</h1> <button id="btn" onClick={() => {setState('updated value')}}> click </button> </> ) } ReactDOM.render( <> <AppTwo /> </>, document.getElementById('root') );
about 4 years ago · Juan Pablo Isaza Report
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