useEffect React hook, how to use Find out what the useEffect React hook is useful for, and how to work with it!Check out my React hooks introduction first, if you’re new to them.One React hook I use a lot is u
To avoid this bug, we useuseEffect. Any code run withuseEffectis only executed once when the React component is being rendered to the screen: import{useEffect}from'react'functionTimerComponent(){setTimeout(()=>{console.log("2 sec.")},2000);useEffect(()=>;{setTimeout(()=>;{console.log...
In this tutorial, you will learn how to use; ReactNative, CometChat, and Firebase to build a one-on-one chat app with a stunning UI.
In this guide, we will explore modern ways to add custom fonts in a React Native app, including Google Fonts integration. To follow along, you should be familiar with the basics of React Native or the Expo SDK, including JSX, components (class and functional), and styling. You can also ...
In this tutorial, we will go over the concept of forwarding refs in React and understand how it helps us manage interactions with the DOM. For a more engaging experience, we’ll cover how to create refs, attach created refs to DOM elements and classes, use the forwardRef method, and more...
import { render, screen } from '@testing-library/react'; import App from './App'; test('renders welcome message', () => { render(<App />); expect(screen.getByText(/welcome to react/i)).toBeInTheDocument(); }); Step 4: Run Your Tests Use the built-in test command to run yo...
Looks good, no? And this should work but see what happens to theprevCountacross component renders. Let's use a useEffect hook to print the value ofprevCountto the console whenever we update thecounterstate: useEffect(()=>{console.log('counter:',counter,'prevCount:',prevCount);},[counter...
UpdateApp.tsxto use the DotCode scanner component to scan a DotCode and display the result. importReact,{useEffect}from'react';import{Button,SafeAreaView,StyleSheet,Text,View,}from'react-native';import{BarcodeScanner}from'./components/BarcodeScanner';import{CameraEnhancer,DecodedBarcodesResult,License...
Here are different ways that you can use to make you React Native App Responsive: 1. Utilize Flexbox Flexbox is a powerful layout mechanism that can be used to create a responsive UI. It provides a flexible way to lay out elements on the screen without having to manually set sizes, posi...
React Native Elements is a UI toolkit for React Native applications that provides customizable components for building consistent user interfaces.