Monday 15 April 2024

Usage of Debouce in React Native Mobile Application

Debouncing in React Native is a technique used to limit the rate at which a function fires. This can be particularly useful for events that trigger often, such as onChangeText for a TextInput.


Here's an example of how you can implement debouncing in React Native using lodash's debounce function:


First, install lodash:


npm install lodash


Then, use the debounce function in your component:



import React, { useState } from 'react';

import { TextInput } from 'react-native';

import { debounce } from 'lodash';


function SearchInput() {

  const [value, setValue] = useState('');


  const handleChange = debounce((text) => {

    setValue(text);

  }, 300); // Debounce time is 300ms


  return (

    <TextInput

      style={{ height: 40, borderColor: 'gray', borderWidth: 1 }}

      onChangeText={(text) => handleChange(text)}

      value={value}

    />

  );

}


export default SearchInput;


In this example, the handleChange function is debounced with a delay of 300 milliseconds. This means that it will not be called until 300 milliseconds have passed since the last time it was invoked. This can be particularly useful for search inputs, where you might want to wait for the user to stop typing before making a request to your server.

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