The module will then be used as a namespace to access all exports. We can export all the objects simultaneously at the file’s end. So, you can choose any of the above approaches to import JavaScript files into ReactJS. Enjoying our tutorials? Subscribe to DelftStack on YouTube to ...
<ButtononClick={handleDownload}variant="contained"color="info">Download file</Button> Thecolorprop can be set to one oferror,info,inherit,primary,secondary,successandwarning. #Downloading a file from an external URL in React.js Here is an example that downloads a file from an external URL....
Create a .test.js file and paste the following test script inside the file. Write the test with the ‘it’ or ‘test’ function offered by the Jest library. import React from 'react'; import { render } from '@testing-library/react'; import HelloWorld from './HelloWorld'; test('renders...
Techniques for Lazy Loading Images in Javascript 1. Using EventListeners2. Using Intersection Observer API This article describes what lazy loading of an image is, its significance, techniques, best practices and more. What is a Lazy Loading Image? Lazy Loading images is a technique to load imag...
devices. Unlike traditional native development, React Native allows you to share most of your code between mobile platforms. Finally, we’ll provide a step-by-step javascript react tutorial to building your mobile app with React JS. We’ll include practical tips and examples. Let’s get ...
Now, JavaScript has its own built-in way to make API requests. This is the Fetch API, a new standard to make server requests with Promises, but which also includes additional features. Prerequisites A local development environment for Node.js. FollowHow to Install Node.js and Create a Local...
The following code summarizes the steps involved in a React.jsfile uploader: Event.target.files import React, { Component } from 'react'; class App extends Component { constructor(props) { super(props); } showFile = async (e) => { ...
Too Long; Didn't ReadMigrating a React project from Javascript to TypeScript isn't a mere 'search-and-replace' of .js files with .tsx. It's a strategic move that involves learning new conventions, understanding types deeply, and, most importantly, changing the way we think about our code...
Learn how to install React on Windows in just a few minutes. This guide will walk you through the process step-by-step, so you can start using React right away.
Add Excel import code Add data to imported Excel file Add sparklines Add Excel export code Set up a JavaScript spreadsheet project First, we can use the SpreadJS files hosted on NPM. To do this, we can install using command line arguments. Open a command prompt and navigate to the location...