Daily tasks.- "Using useEffect with an Input Field in React Native"

Suppose we want to update the state of an input field every time the user types something in it. First, we import useEffect and useState from the React library:

import React, { useState, useEffect } from 'react';

import { View, TextInput } from 'react-native';

Then, we create our component and use useState to handle the state of the input field:

const App = () => {

 

  const [text, setText] = useState('');

useEffect(()=>{

  console.log(`Current text: ${text}`);

},[text])

 

  return (

    <View>

    <TextInput

      value={text}

      onChangeText={setText}

      placeholder="Type something here"

    />

  </View>

  );

};

export default App;

In this example, we've used useState to handle the state of the input field. setText is a function that allows us to update the state of the input field every time the user types something in it.

We've also used useEffect to log a message to the console every time the value of the input field changes. We've added [text] as the second argument to the useEffect function to specify that this function should be executed every time the value of text changes.

Finally, we've added an input field that allows the user to type something in. When the user types something in the input field, the setText function is called to update the state of the input field and show the typed text on the screen.

With this, every time the user types something in the input field, the state of the input field will be updated and the useEffect function will be executed to log a message to the console. I hope this example has helped you understand how to use useEffect with an input field in React Native.