Book Image

JavaScript by Example

By : Dani Akash S
Book Image

JavaScript by Example

By: Dani Akash S

Overview of this book

JavaScript is the programming language that all web developers need to learn. The first item on our JavaScript to-do list is building g a To-do list app, which you'll have done by the end of the first chapter. You'll explore DOM manipulation with JavaScript and work with event listeners. You'll work with images and text to build a Meme creator. You will also learn about ES (ECMAScript) classes, and will be introduced to layouts using the CSS3 Flexbox. You'll also develop a responsive Event Registration form that allows users to register for your upcoming event and use charts and graphics to display registration data. You will then build a weather application, which will show you different ways perform AJAX requests and work with dynamic, external data. WebRTC enables real-time communication in a web browser; you'll learn how to use it when you build a real-time video-call and chat application later in the book. Towards the end of the book, you will meet React, Facebook's JavaScript library for building user interfaces. You'll throw together a blog with React, and get a feel for why this kind of JavaScript framework is used to build large-scale applications. To make your blog more maintainable and scalable, you'll use Redux to manage data across React components.
Table of Contents (8 chapters)

The React crash course

In this section, we are going to spend 10 minutes building your first React application. For this section, you don't need any text editor because you will be building the app in JSFiddle!

Get started by visiting the JSFiddle page at:, where I have set up all the libraries and configurations needed for building a React application. You should write the code for the React crash course section in this page.

This page has React and ReactDOM available as the properties of a window object (global scope), since I have included these libraries in the external resources. We'll also create a component object from the React object. In ES6, there is a trick to obtain properties or methods of an object into standalone variables. Look at the following example:

const vehicles = { fourWheeler: 'Car', twoWheeler: 'Bike...