Mastering JavaScript
3.7 (40 ratings)
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Mastering JavaScript

Elevate your web development skills by deep diving into JavaScript
3.7 (40 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
711 students enrolled
Created by Packt Publishing
Last updated 9/2015
Current price: $10 Original price: $95 Discount: 89% off
5 hours left at this price!
30-Day Money-Back Guarantee
  • 4 hours on-demand video
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • Master JavaScript best practices for designing and developing fully functional, cross-platform libraries
  • Use powerful design patterns for an innovative and cutting-edge approach to web development
  • Enhance the performance of your libraries by focusing on a new aspect in every video
View Curriculum
  • This video course assumes you have a basic knowledge of JavaScript and HTML with some familiarity of OOP concepts.

JavaScript is the browser language that supports object-oriented, imperative, and functional programming styles, focusing on website behavior. It has a rich set of libraries and frameworks and is the most widely used client-side language with features such as asynchronous communication, controlling browsers, and editing documents. JavaScript provides web developers out there with the knowledge to program more intelligently and idiomatically—something not all programmers can do or understand.

Mastering JavaScript will immerse you in the JavaScript world, where you will mature as a developer by exploring the best practices for building an original, functional, and useful cross-platform library.

Starting off with just some basic knowledge of JavaScript and HTML, we will first lay a solid naming foundation for OOP coding by exploring the best naming conventions practices for primitive variables, constructors, methods, and properties. Then we'll shed some light on creating global namespace, create a pure JavaScript onload script, and walk through cross-browser compatibility. We will learn how the onload and DOMContentLoaded events are actually triggered and understand how to use querySelectorAll method and dynamically load scripts using a script loader.

As the course progresses, we will start building up our own libraries by integrating codes, methods, and logic, we will also expand our library with design patterns such as module, façade, adapter, and singleton. Finally, we will create a working time manager and explore unit testing in JavaScript.

After working through this video course, you will be equipped with all the knowledge, tips, and hacks you need to stand out in the advanced world of web development.

About The Author

Ben Fhala discovered his passion for data visualization six years ago while he was working at Parsons in New York, in their data visualization department, PIIM. He is the owner of the online video training school, 02geekcom, and an Adobe ACP. He enjoys spending most of his time learning and teaching and has a love for visual programming and visualization in general. Ben has had the honor of developing applications for members of the US Congress, Prime Ministers, and Presidents around the world.

He has built many interactive experiences for companies such as Target, AT&T, Crayola, Marriott, Neutrogena, and Nokia. He has technically directed many award-winning projects and has been part of teams that have won three Agency of the Year awards. Among Ben's publications are Packt's HTML5 Graphing and Data Visualization Cookbook.

Who is the target audience?
  • If you are an experienced JavaScript developer and want to take your skills to the next level by mastering the language and it’s usage in the modern web, this course is ideal for you!
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Curriculum For This Course
39 Lectures
Idiomatic JavaScript
8 Lectures 37:38

This video provides you a synopsis of the course.

Preview 02:57

When working in teams or contributing to existing libraries, it is critical that you adhere to the common naming convention practices. Learn how to format your code and be consistent about your choices.

Using White Space for Readability

Strategies of working with variables can help you become a better developer. Know the best tips to work with primitive variables.

Declaring Variables

It is important to know the differences between functions and variables and how we should name them. Understand the best practices of naming conventions for variables and functions.

Declaring Complex Data Types and Functions

Now that we know the naming conventions for functions and variables, let's have a solid naming convention foundation for OOP coding in JavaScript.

OOP Naming Conventions

There is no namespace keyword in JavaScript, but it is very easy to create one. Let's learn what it is.

Creating a Global Namespace

A variable's value keeps changing, but many a times, you want to store information that never changes. Let's learn how to define constants in JavaScript and the naming convention that will make it easy for us to treat these variables as constants.

Constants (and Pseudo constants)

Let's briefly talk about consistency of our code in general using the unary convention. We will see how to use it to make our code more efficient and improve code performance.

Smart Coercion of Data Fields
Cross-browser Development
4 Lectures 19:43

One of the vital parts of building a library, a framework, or original code that interacts directly with the browser is the need to test and validate compatibility with the browser.

Preview 04:53

The default way in which onload works is that it only allows one onload to occur at a time. But what happens if you don't control the loading process of other applications and wish to enable an onload without breaking the loading process on your end? Learn a great hack that will enable you to create an onload without needing to worry if other onloads exist.

Creating an onload Method That Always Works

Not every feature is detectable on every browser, and many a times, you will need to come up with creative solutions that can bypass the issues of the ways by which different browsers do different things.

OnReady – Our First Cross-browser Script

Let's turn our attention to Modernizr, which makes it easy to write conditional JavaScript and CSS for browser feature supports.

Using Modernizr to Detect Features
Cross-browser DOM Manipulation
4 Lectures 24:02

There is a new feature in town called querySelectorAll. Before we can start working with it, we need to filter out and define the browsers that support this feature, while building the foundation for an alternative solution.

Preview 04:48

In the modern world of HTML5, there are very easy ways to select elements natively using the querySelectorAll method. Learn how to build your application in a way that would recognize that your browser does not support this feature when it does not.

Selecting DOM Elements Natively in HTML5

When the browser does not support the querySelectorAll feature, we need to develop a script loader that is cross-browser-compatible.

Creating a Cross-browser Script Loader

We see how to load scripts dynamically only when we need them, using the script loader we created in the last video. We will have all of the groundwork ready to start creating our own library.

Using Sizzle to Select DOM Elements
Creating a JavaScript Library
5 Lectures 36:32

Namespaces provide a way for us to avoid overwriting code. Most of the times, we use namespaces to provide a structure for our library elements.

Preview 05:43

JavaScript doesn't support private variables natively as yet. There are ways to create pseudo-private variables, but the problem is that they can still be overwritten by other developers (by mistake or on purpose).

Creating Private Variables in JavaScript

We will create a safer global variable definition as we get to know our first design pattern—the Module Design Pattern.

The JavaScript Module Design Pattern

As you start working with your library (and it becomes popular), you might get to a situation where it's being loaded more than once. Learn how you can deal with situations like this.

Version Controlling Our Library

We will take all the scraps of code that we created in previous videos (and sections) and combine them together into our library.

Building Out Our Library
Expanding Out with Design Patterns
5 Lectures 32:24

While interfaces don't exist in JavaScript, the ideas behind them are very relevant for JavaScript. Let's understand what interfaces are and how to implement the logic behind them in JavaScript.

Preview 07:21

Learn what an adapter is and why we would want to use them in programing and in JavaScript.

Creating an Adapter Design Pattern

We want our library to always do the same thing, no matter what the underlying library that is enabling it is. Let's build a jQuery adapter to first check whether the user has jQuery loaded. If it is, we will use the library for our operations.

Building a jQuery Adapter

So far, our focus in the creation of our library was on getting all the elements of our adapters to work the same, as we focused on creating custom queries. We will now piggyback on the jQuery text method as we discover the problem we have in our current architecture.

Adding a Functionality Method

Our goal is to create a library that is functional and useful. As such, we will take advantage of the strategy that jQuery uses to make it easier to interact with elements.

Mimicking the jQuery Wrapper
Exploring the Facade Design Pattern
4 Lectures 17:46

In this video, we will discover the Facade Design Pattern. Creating a simple constant interface. This interface is going to be sent to the user no matter what library element they are using.

Preview 03:55

In the last video, we created a Facade Design Pattern, but our solution was not complete. We still need to figure out a way to update the initial values that we configure when we start our application to use the Facade. By the end of this video, we will be fully using the Facade Design pattern.

Creating a Facade Creator

Want to make your facade a lot more than just a standard Façade? You can do so by incorporating its own methods.

Creating a New Global Function Through the Facade

We've created our façade pattern, but it can very easily get exposed to the methods and items that we really want to hide from all users. Let's take our facade design pattern to the next level by exposing only what we want to expose in the library.

Creating an Advanced Facade Pattern
Working with Time in JavaScript
5 Lectures 45:49

We need a global object that is always available for all the elements in an application. Let's use a singleton, which is a design pattern that helps us create an object only one time.

Preview 11:32

We will take our singleton from the last video and start building it out, starting from its constructor.

Building the Constructor for Our Ticker

We will continue and build the dictionary usage for our ticker.

Connecting Time with Our Ticker

Let's get our ticker to work.

Processing Interval groups

We have a working ticker but it's hidden from users. Let's expose the ticker to all users, and thus complete the creation of our ticker and our singleton.

Exposing Our Ticker to the World
Dispatching Events in JavaScript
4 Lectures 35:53

An event dispatcher is a type of design pattern derived from the Observer Design pattern that enables the developer's objects to listen to changes in another object without creating a direct two-directional linkage between the objects. In this video, we will have a working event dispatcher.

Preview 13:34

In the last video, we created an event dispatcher. It's time for us to really test it by integrating it into the ticker time manager that we created in an earlier section.

Integrating the Event Dispatcher into Our Library

We already have a working event dispatcher, but at this stage, we can't remove the events. We need to solve this.

Removing Events from the Dispatcher

We are done building, and in our last video in this course, we need to dedicate a bit of time to testing our application over time.

Building Test Units
About the Instructor
Packt Publishing
3.9 Average rating
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58,487 Students
686 Courses
Tech Knowledge in Motion

Packt has been committed to developer learning since 2004. A lot has changed in software since then - but Packt has remained responsive to these changes, continuing to look forward at the trends and tools defining the way we work and live. And how to put them to work.

With an extensive library of content - more than 4000 books and video courses -Packt's mission is to help developers stay relevant in a rapidly changing world. From new web frameworks and programming languages, to cutting edge data analytics, and DevOps, Packt takes software professionals in every field to what's important to them now.

From skills that will help you to develop and future proof your career to immediate solutions to every day tech challenges, Packt is a go-to resource to make you a better, smarter developer.

Packt Udemy courses continue this tradition, bringing you comprehensive yet concise video courses straight from the experts.