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Rediscovering JavaScript: ES6, ES7 & ES8

Takeaway Skills

Learn modern JavaScript and master advanced concepts like promises, symbols, and metaprogramming

Develop core JavaScript skills needed to level up your programming skills

Strengthen your coding skills through practice examples and exercises

Write efficient and less error-prone code

Learn modern JavaScript and master advanced concepts like promises, symbols, and metaprogramming

Develop core JavaScript skills needed to level up your programming skills

Strengthen your coding skills through practice examples and exercises

Write efficient and less error-prone code

Course Overview

JavaScript is one of the most powerful and flexible languages, and it has evolved rapidly in recent years. The ECMAScript 2015 (ES6), 2016 (ES7), and 2017 (ES8) have introduced many new features for front-end and back-end development. This course covers the modern JavaScript features t...

How You'll Learn

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built-in assessments let you test your skills. Completion certificates let you show them off.

Hands-on coding environments

You don’t get better at swimming by watching others. Coding is no different. Practice as you learn with live code environments inside your browser.

Faster than videos

Videos are holding you back. The average video tutorial is spoken at 150 words per minute, while you can read at 250. That‘s why our courses are text-based.

No set-up required

Start learning immediately instead of fiddling with SDKs and IDEs. It‘s all on the cloud.

Progress you can show

Built-in assessments let you test your skills. Completion certificates let you show them off.

Course Contents

1. Getting Started

How This Course Will Help You

What Does This Course Cover?

2. JavaScript Gotchas

Be Careful Where You Break Lines

Use === Instead of ==

Declare Before Use

Stay One Step Ahead

Quiz on JavaScript Gotchas

Exercise 1: Let's Vote

Solution Review: Let's Vote

Exercise 2: Fix the Code

Solution Review: Fix the Code

Exercise 3: Lint the Code

Solution Review: Lint the Code

3. Variables and Constants

Perils of Mutability

Safer Code With let and const

Quiz on Variables and Constants

Exercise 1: Let's Get the Output

Solution Review: Let's Get the Output

4. Working With Function Arguments

The Power and Perils of arguments

Using the Rest Parameter

The Spread Operator

Uses of the Spread Operator

Defining Default Values for Parameters

Multiple Default Parameters

Expressions as Default Values

Quiz on Function Arguments

Exercise 1: Calculate the Tax

Solution Review: Calculate the Tax

Exercise 2: Purchase Items

Solution Review: Purchase Items

Exercise 3: Place Order

Solution Review: Place Order

5. Iterators and Symbols

The Convenience of Enhanced for

Symbol—A New Primitive Type

Global Registry With Symbol

Special Well-Known Symbols

Using Custom Iterators

Implementing an Iterator

Removing Noise With Yield

Removing Noise With Generators

Combining Generators

Creating Infinite Iterators

Quiz on Iterators and Symbols

Exercise 1: Fibonacci Series

Solution Review: Fibonacci Series

Exercise 2: Fibonacci Series Index

Solution Review: Fibonacci Series Index

6. Arrow Functions and Functional Style

From Anonymous to Arrow Functions

Multiline Arrow Functions

Using the Rest Parameter and Default Arguments

Anonymous vs. Arrow Functions

Lexically Scoped this and arguments

Limitations of Arrow Functions: Anonymous and Not a Constructor

Limitations: No Prototype and new.target Property

Limitations: Generators, Exceptions, and Object Literals

When to Use Arrow Functions

Arrow Functions and Functional Style

Quiz on Arrow Functions and Functional Style

Exercise 1: Refactor the Code

Solution Review: Refactor the Code

Exercise 2: Functional Style Programming

Solution Review: Functional Style Programming

7. Literals and Destructuring

Using Template Literals

Multiline Strings

Tagged Template

Enhanced Object Literals

Array Destructuring: Extracting and Ignoring Values

Array Destructuring: Default and Parameters Values

Object Destructuring: Extracting Object Properties

Object Destructuring: Default and Parameter Values

Object Destructuring: Deep Destructuring, and Collisions

Object Destructuring: The Role of the Spread Operator

Quiz on Literals and Destructuring

Exercise 1: Tagged Template

Solution Review: Tagged Template

Exercise 2: Destructuring

Solution Review: Destructuring

8. Working with Classes

Creating a Class

Implementing a Constructor

Defining a Method

Defining Computed Members

Creating Properties

Defining Class Members

Class Expressions

New Built-in Classes: Set

New Built-in Classes: Map

New Built-in Classes: WeakSet and WeakMap

Quiz on Working with Classes

Exercise 1: Class Implementation

Solution Review: Class Implementation

Exercise 2: Maps

Solution Review: Maps

9. Using Inheritance

Understanding Prototypal Inheritance

Inheriting from a Class: Subclass and Overridden Methods

Inheriting from a Class: extends keyword and Prototype Chaining

Inheriting from a Class: Default Constructors and Legacy Classes

Managing Instance Types

Managing Instance Types Rules

Managing Instance Types with species

Quiz on Using Inheritance

Exercise 1: Sets

Solution Review: Sets

Exercise 2: Instance Type

Solution Review: Instance Type

10. Using Modules

Creating a Module

Exporting from a Module

Default Exports

Reexporting from Another Module

Importing from a Module

Quiz on Using Modules

11. Keeping Your Promises

No Thanks to Callback Hell

Promises to the Rescue

Ways to Create a Promise

Chaining Promises

Working with Multiple Promises: Racing Promises

Working with Multiple Promises: Gathering All Promises

Async and Await

Quiz on Keeping Your Promises

Exercise 1: Gathering All Promises

Solution Review: Gathering All Promises

Exercise 2: Async and Await

Solution Review: Async and Await

12. Exploring Metaprogramming

The Power and Perils of Metaprogramming

Member Injection: Instance

Member Injection: Class's Prototype and Property

Member Injection: Injecting Multiple Properties

Quiz on Exploring Metaprogramming

Exercise 1: Injecting a Method

Solution Review: Injecting a Method

Exercise 2: Injecting Multiple Properties

Solution Review: Injecting Multiple Properties

13. Deep Dive into Metaprogramming

Purpose of Reflect: Invoke Functions and Access Prototypes

Purpose of Reflect: Exploring Properties

Metaprogramming with Proxy

Leasing an Object Using a Revocable Proxy

Intercepting Function Calls Using Proxy

Synthesizing Members with Proxy

Synthesizing Members Directly on an Instance

Using Decorators

Introspecting the Decorated Class

Creating a Custom Decorator

Quiz on Deep Dive into Metaprogramming

Exercise 1: Revocable Proxy

Solution Review: Revocable Proxy

Exercise 2: Proxy

Solution Review: Proxy

14. Conclusion

15. Appendix

How to Run Modern JavaScript

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