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Modular Programming with JavaScript

You're reading from   Modular Programming with JavaScript Modularize your JavaScript code for better readability, greater maintainability, and enhanced testability

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Product type Paperback
Published in Jul 2016
Publisher Packt
ISBN-13 9781785880650
Length 274 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (12) Chapters Close

Preface 1. What Are Modules and Their Advantages? FREE CHAPTER 2. Review of Important JavaScript OOP Concepts 3. Module Design Pattern 4. Designing Simple Modules 5. Module Augmentation 6. Cloning, Inheritance, and Submodules 7. Base, Sandbox, and Core Modules 8. Application Implementation – Putting It All Together 9. Modular Application Design and Testing 10. Enterprise Grade Modular Design, AMD, CommonJS, and ES6 Modules Index

Cloning modules


Cloning objects in general, and cloning modules in particular, is about creating an exact replica of the original object or module.

But before we talk about cloning, let's consider some of the ways that we can create new objects based on other objects.

Creating instances of a constructor function

One way of creating objects based on another object is by creating instances of a constructor function.

As you know, when we create an instance of an object using a constructor function in JavaScript, we use the new keyword. The created instance resides in a different memory address than the constructor function. When we assign properties to the prototype property of the constructor function, all the instances of the constructor function will share these properties of the prototype object.

Let's have a look at a simple example and review creating objects based on constructor functions.

Consider the following code snippet:

function testConstructor (){

    this.someValue = "Value in the...
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