Book Image

Advanced JavaScript

By : Zachary Shute
Book Image

Advanced JavaScript

By: Zachary Shute

Overview of this book

If you are looking for a programming language to develop flexible and efficient applications, JavaScript is an obvious choice. Advanced JavaScript is a hands-on guide that takes you through JavaScript and its many features, one step at a time. You'll begin by learning how to use the new JavaScript syntax in ES6, and then work through the many other features that modern JavaScript has to offer. As you progress through the chapters, you’ll use asynchronous programming with callbacks and promises, handle browser events, and perform Document Object Model (DOM) manipulation. You'll also explore various methods of testing JavaScript projects. In the concluding chapters, you'll discover functional programming and learn to use it to build your apps. With this book as your guide, you'll also be able to develop APIs using Node.js and Express, create front-ends using React/Redux, and build mobile apps using React/Expo. By the end of Advanced JavaScript, you will have explored the features and benefits of JavaScript to build small applications.

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Table of Contents (9 chapters)
Advanced JavaScript
Advanced JavaScript
Preface
Preface
Free Chapter
1
Introducing ECMAScript 6
Introducing ECMAScript 6
Introduction
Beginning with ECMAScript
Understanding Scope
Declaring Variables
Introducing Arrow Functions
Learning Template Literals
Enhanced Object Properties
Destructuring Assignment
Classes and Modules
Transpilation
Iterators and Generators
Summary
2
Asynchronous JavaScript
Asynchronous JavaScript
Introduction
Asynchronous Programming
Callbacks
Promises
Async/Await
Summary
3
DOM Manipulation and Event Handling
DOM Manipulation and Event Handling
Introduction
DOM Chaining, Navigation, and Manipulation
DOM Events and Event Objects
JQuery
Summary
4
Testing JavaScript
Testing JavaScript
Introduction
Testing
Types of Testing
Test Tools and Environments
Summary
5
Functional Programming
Functional Programming
Introduction
Introducing Functional Programming
Declarative Versus Imperative
Pure Functions
Higher Order Functions
Shared State
Immutability
Side Effects
Function Composition
Summary
6
The JavaScript Ecosystem
The JavaScript Ecosystem
Introduction
JavaScript Ecosystem
Node.js
React
Summary
Appendix
Appendix
Chapter 1: Introducing ECMAScript 6
Chapter 2: Asynchronous JavaScript
Chapter 3: DOM Manipulation and Event Handling
Chapter 4: Testing JavaScript
Chapter 5: Functional Programming
Chapter 6: JavaScript Ecosystem

Summary

Functional Programming is a programming paradigm that focuses on expressions and declarations to design an application and build a code base. Functional Programming is one of the hot new programming styles and is considered the best style for programming in JavaScript. Functional Programming can help our JavaScript be more concise, predictable, and testable. Functional Programming is built on seven key concepts: declarative functions, pure functions, higher order functions, shared state, immutability, side effects, and function composition.

Declarative functions focus on what the solution or goal is, instead of how we get the solution. Declarative functions are designed to abstract away a lot of the imperative approach to code. They help developers code more in keeping with the mental model of the developer, instead of the operational model of the machine running the code.

Pure functions are intended to make our code easier to test, easier to debug, and more flexible and reusable....

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