Hooks lifecycle (II), routing with RRD v6, Context API

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Hooks lifecycle (II), routing with RRD v6, Context API

Hooks lifecycle

Es posible asociar un efecto a cada una de las fases del ciclo de vida de un componente a través del hook useEffect():

Fase de montaje (mounting)

El array argumentado en segunda posición se mantiene presente, pero vacío

useEffect(()=>{
     // Mounting phase effect instructions
}, [])

Fase de actualización (updating)

Existen dos configuraciones:

  • El array argumentado en segunda posición contiene las variables que desencadenan el efecto:

    useEffect(()=>{
         // Updating phase when name, value or age variables change
    }, [name, value, age])
  • No se argumenta array como segundo argumento, desencadenando el efecto frente a cualquier actuailización del componente:

    useEffect(()=>{
         // Updating phase instructions (fired under any update on component's props or state
    })

Fase de desmontaje (unmounting)

El hook puede retornar una cleanup function, ejecutada justo antes de la supresión del componente:

useEffect(()=>{
     // Mounting phase effect instructions
     
     return () => {
         // Unmounting phase effect instructions 
     }
     
}, [])

Más información

Encuentra toda la info en la documentación oficial de React

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