The Complete JavaScript Course 2023: From Zero to Expert!

Discover the ultimate JavaScript learning experience with “The Complete JavaScript Course 2023: From Zero to Expert!” This comprehensive video course, available for free on our website, is designed to take you from a beginner to an expert in the world of JavaScript programming.

Comprehensive Program: We provide a curriculum that covers all aspects of JavaScript programming in our course. This course contains something for everyone, whether you’re a total novice or an experienced developer exploring to hone your skills.

Engaging Video Content: We believe in learning by doing, and that’s why our course is packed with hands-on examples and real-life projects. You’ll follow along with the instructor as they guide you through each concept, ensuring an interactive and engaging learning experience.

  1. Become an advanced, confident, and modern JavaScript developer from scratch
  2. Build 6 beautiful real-world projects for your portfolio (not boring toy apps)
  3. Gain job-ready skills by understanding how JavaScript really works behind the scenes
  4. Learn how to think and work like a developer: problem-solving, researching, workflows

5. Master JavaScript fundamentals, including:

  • Variables
  • if/else statements
  • Operators
  • Boolean logic
  • Functions
  • Arrays
  • Objects
  • Loops
  • Strings
  • And more

6. Dive into modern ES6+ features from the beginning, such as:

  • Arrow functions
  • Destructuring
  • Spread operator
  • Optional chaining (ES2020)
  • And more

7. Explore modern OOP concepts, including:

  • Classes
  • Constructors
  • Prototypal inheritance
  • Encapsulation
  • And more
  • Understand complex concepts like the ‘this’ keyword, higher-order functions, closures, etc.

9. Discover asynchronous JavaScript, covering:

  • Event loop
  • Promises
  • async/await
  • AJAX calls
  • APIs

10. Learn how to architect your code using flowcharts and common patternsFamiliarize yourself with modern tools for 2022 and beyond, such as:

  • NPM
  • Parcel
  • Babel
  • ES6 modules

11. Practice your skills with 50+ challenges and assignments (solutions included)

12. Receive fast and friendly support in the Q&A area

13. Customize your learning path with course pathways according to your goals

Course content of Complete JavaScript Course

1. Welcome, Welcome, Welcome Complete JavaScript Course !

  • Course Structure and Projects
  • Read Before You Start!
  • Watch Before You Start!
  • Setting Up Our Code Editor

2. JavaScript Fundamentals

  • Section Intro
  • Hello World!
  • A Brief Introduction to JavaScript
  • Linking a JavaScript File
  • Values and Variables
  • Practice Assignments
  • Data Types
  • let, const and var
  • Basic Operators
  • Operator Precedence
  • A Note About Challenges
  • CHALLENGE Video Solution
  • Strings and Template Literals
  • Taking Decisions: if / else Statements
  • CHALLENGE Video Solution
  • Type Conversion and Coercion
  • Truthy and Falsy Values
  • Equality Operators: == vs.
  • Boolean Logic
  • Logical Operators
  • CHALLENGE #3: Video Solution
  • The switch Statement
  • Statements and Expressions
  • The Conditional (Ternary) Operator
  • CHALLENGE #4: Video Solution
  • JavaScript Releases: ES5, ES6+ and ESNext

3. JavaScript Fundamentals

  • Section Intro
  • Activating Strict Mode
  • Functions
  • Function Declarations vs. Expressions
  • Arrow Functions
  • Functions Calling Other Functions
  • Reviewing Functions
  • CHALLENGE Video Solution
  • Introduction to Arrays
  • Basic Array Operations (Methods)
  • CHALLENGE Video Solution
  • Introduction to Objects
  • Dot vs. Bracket Notation
  • Object Methods
  • CHALLENGE Video Solution
  • Iteration: The for Loop
  • Looping Arrays, Breaking and Continuing
  • Looping Backwards and Loops in Loops
  • The while Loop
  • CHALLENGE #4: Video Solution

4. How to Navigate Complete JavaScript Course This Course

  • Pathways and Section Roadmaps
  • D Course Pathways

5. Developer Skills & Editor Setup

  • Section Intro
  • Section Roadmap
  • Setting up Prettier and VS Code
  • Installing Node.js and Setting Up a Dev Environment
  • Learning How to Code
  • How to Think Like a Developer: Become a Problem Solver!
  • Using Google, StackOverflow and MDN
  • Debugging (Fixing Errors)
  • Debugging with the Console and Breakpoints
  • Coding Challenge #1

6. [OPTIONAL] HTML & CSS Crash Course

  • Section Intro
  • Basic HTML Structure and Elements
  • Attributes, Classes and IDs
  • Basic Styling with CSS
  • Introduction to the CSS Box Model

7. JavaScript in the Browser: DOM and Events Fundamentals

  • Section Intro
  • Section Roadmap
  • PROJECT Guess My Number!
  • What’s the DOM and DOM Manipulation
  • Selecting and Manipulating Elements
  • Handling Click Events
  • Implementing the Game Logic
  • Manipulating CSS Styles
  • Coding Challenge #1
  • Implementing Highscores
  • Refactoring Our Code: The DRY Principle
  • PROJECT Modal Window
  • Working With Classes
  • Handling an “Esc” Keypress Event
  • PROJECT Pig Game
  • Rolling the Dice
  • Switching the Active Player
  • Holding Current Score
  • Resetting the Game

8. How JavaScript Works Behind the Scenes

  • Section Intro
  • Section Roadmap
  • An High-Level Overview of JavaScript
  • The JavaScript Engine and Runtime
  • Execution Contexts and The Call Stack
  • Scope and The Scope Chain
  • Scoping in Practice
  • Variable Environment: Hoisting and The TDZ
  • Hoisting and TDZ in Practice
  • The this Keyword
  • The this Keyword in Practice
  • Regular Functions vs. Arrow Functions
  • Primitives vs. Objects (Primitive vs. Reference Types)
  • Primitives vs. Objects in Practice

9. Data Structures, Modern Operators and Strings

  • Section Intro
  • Section Roadmap
  • Destructuring Arrays
  • Destructuring Objects
  • The Spread Operator (…)
  • Rest Pattern and Parameters
  • Short Circuiting (&& and II)
  • The Nullish Coalescing Operator (??)
  • Logical Assignment Operators
  • Coding Challenge #1
  • Looping Arrays: The for-of Loop
  • Enhanced Object Literals
  • Optional Chaining (?.)
  • Looping Objects: Object Keys, Values, and Entries
  • Coding Challenge #2
  • Sets
  • Maps: Fundamentals
  • Maps: Iteration
  • Summary: Which Data Structure to Use?
  • Coding Challenge #3
  • Working With Strings – Part 1
  • Working With Strings – Part 2
  • Working With Strings – Part 3
  • Coding Challenge #4
  • String Methods Practice

10. A Closer Look at Functions Complete JavaScript Course

  • Section Intro
  • Section Roadmap
  • Default Parameters
  • How Passing Arguments Works: Value vs. Reference
  • First-Class and Higher-Order Functions
  • Functions Accepting Callback Functions
  • Functions Returning Functions
  • The call and apply Methods
  • The bind Method
  • Coding Challenge #1
  • Immediately Invoked Function Expressions (IIFE)
  • Closures
  • More Closure Examples
  • Coding Challenge #2

11. Working With Arrays

  • Section Intro
  • Section Roadmap
  • Simple Array Methods
  • The new at Method
  • Looping Arrays: forEach
  • forEach With Maps and Sets
  • PROJECT: “Bankist” App
  • Creating DOM Elements
  • Coding Challenge #1
  • Data Transformations: map, filter, reduce
  • The map Method
  • Computing Usernames
  • The filter Method
  • The reduce Method
  • Coding Challenge #2
  • The Magic of Chaining Methods
  • Coding Challenge #3
  • The find Method
  • Implementing Login
  • Implementing Transfers
  • The findlndex Method
  • some and every
  • flat and flatMap
  • Sorting Arrays
  • More Ways of Creating and Filling Arrays
  • Summary: Which Array Method to Use?
  • Array Methods Practice
  • Coding Challenge #4

12. Numbers, Dates, Intl and Timers

  • Section Intro
  • Section Roadmap
  • Converting and Checking Numbers
  • Math and Rounding
  • The Remainder Operator
  • Numeric Separators
  • Working with Biglnt
  • Creating Dates
  • Adding Dates to “Bankist” App
  • Operations With Dates
  • Internationalizing Dates (Intl)
  • Internationalizing Numbers (Intl)
  • Timers: setTimeout and setlnterval
  • Implementing a Countdown Timer

13. Advanced DOM and Events

  • Section Intro
  • Section Roadmap
  • PROJECT: “Bankist” Website
  • How the DOM Really Works
  • Selecting, Creating, and Deleting Elements
  • Styles, Attributes and Classes
  • Implementing Smooth Scrolling
  • Types of Events and Event Handlers
  • Event Propagation: Bubbling and Capturing
  • Event Propagation in Practice
  • Event Delegation: Implementing Page Navigation
  • DOM Traversing
  • Building a Tabbed Component
  • Passing Arguments to Event Handlers
  • Implementing a Sticky Navigation: The Scroll Event
  • A Better Way: The Intersection Observer API
  • Revealing Elements on Scroll
  • Lazy Loading Images
  • Building a Slider Component: Pan 1
  • Building a Slider Component: Part 2
  • Lifecycle DOM Events
  • Efficient Script Loading: defer and async

14. Object-Oriented Programming (OOP) With JavaScript

  • Section Intro
  • Section Roadmap
  • What is Object-Oriented Programming?
  • OOP in JavaScript
  • Constructor Functions and the new Operator
  • Prototypes
  • Prototypal Inheritance and The Prototype Chain
  • Prototypal Inheritance on Built-ln Objects
  • Coding Challenge
  • ES6 Classes
  • Setters and Getters
  • Static Methods
  • Object.create
  • Coding Challenge #2
  • Inheritance Between “Classes”: Constructor Functions
  • Coding Challenge #3
  • Inheritance Between “Classes”: ES6 Classes
  • Inheritance Between “Classes”: Object.create
  • Another Class Example
  • Encapsulation: Protected Properties and Methods
  • Encapsulation: Private Class Fields and Methods
  • Chaining Methods
  • ES6 Classes Summary
  • Coding Challenge #4

15. Mapty App: OOP, Geolocation, External Libraries, and More!

  • Section Intro
  • Section Roadmap
  • How to Plan a Web Project
  • IJsing the Geolocation API
  • Displaying a Map Using Leaflet Library
  • Displaying a Map Marker
  • Rendering Workout Input Form
  • Project Architecture
  • Refactoring for Project Architecture
  • Managing Workout Data: Creating Classes
  • Creating a New Workout
  • Rendering Workouts
  • Move to Marker On Click
  • Working with localStorage
  • Final Considerations

16. Asynchronous JavaScript: Promises, Async/Await, and AJAX

  • Section Intro
  • Section Roadmap
  • Asynchronous JavaScript, AJAX and APIs
  • Our First AJAX Call: XMLHttpRequest
  • [OPTIONAL] How the Web Works: Requests and Responses
  • Welcome to Callback Hell
  • Promises and the Fetch API
  • Consuming Promises
  • Chaining Promises
  • Handling Rejected Promises
  • Throwing Errors Manually
  • Coding Challenge #1
  • Asynchronous Behind the Scenes: The Event Loop
  • The Event Loop in Practice
  • Building a Simple Promise
  • Promisifying the Geolocation API
  • Coding Challenge #2
  • Consuming Promises with Async/Await
  • Error Handling With try…catch
  • Returning Values from Async Functions
  • Running Promises in Parallel
  • Other Promise Combinators: race, allSettled and any
  • Coding Challenge #3

17. Modern JavaScript Development: Modules, Tooling, and

  • Section Intro
  • Section Roadmap
  • An Overview of Modern JavaScript Development
  • An Overview of Modules in JavaScript
  • Exporting and Importing in ES6 Modules
  • Top-Level await (ES2022)
  • The Module Pattern
  • CommonJS Modules
  • A Brief Introduction to the Command Line
  • Introduction to NPM
  • Bundling With Parcel and NPM Scripts
  • Configuring Babel and Polyfilling
  • Review: Writing Clean and Modern JavaScript
  • Let’s Fix Some Bad Code: Part
  • Declarative and Functional JavaScript Principles
  • Let’s Fix Some Bad Code: Part 2

18. Forkify App: Building a Modern Application

  • Section Intro
  • Section Roadmap
  • ELQject Overview and
  • Latest Code Updates (Parcel v2 and more)
  • Loading a Recipe from API
  • Rendering the Recipe
  • Listening For load and hashchange Events
  • The MVC Architecture
  • Refactoring for MVC
  • Helpers and Configuration Files
  • Event Handlers in MVC: Publisher-Subscriber Pattern
  • Implementing Error and Success Messages
  • Implementing Search Results – Part 1
  • Implementing Search Results – Part 2
  • Implementing Pagination – Part 1
  • Implementing Pagination – Part 2
  • Project Planning II
  • Updating Recipe Servings
  • Developing a DOM IJpdating Algorithm
  • Implementing Bookmarks – Part 1
  • Implementing Bookmarks – Part 2
  • Storing Bookmarks With localStorage
  • Project Planning Ill
  • Uploading a New Recipe – Part 1
  • Uploading a New Recipe – Part 2
  • Uploading a New Recipe – Part 3
  • Wrapping Up: Final Considerations

19. Setting Up Git and Deployment

  • Section Intro
  • Section Roadmap
  • Simple Deployment With Netlify
  • Setting IJp Git and GitHub
  • Git Fundamentals
  • Pushing to GitHub
  • Setting IJp Continuous Integration With Netlify

20. The End!

  • Where to Go from Here
  • My Other Courses + Updates

21. [LEGACY] Access the Old Course

  • Access the Old Course


  • To take this course, you do not require any coding experience. We will lead you all the way from novice to expert.
  • It is suitable with any computer and operating system (Windows, macOS, or Linux). Throughout the course, we will assist you in setting up your text editor.
  • Although not required, having a basic understanding of HTML and CSS is an advantage. To get you up to speed, the course offers a crash course on HTML and CSS.

Who this course is for:

  • Individuals who want to gain a true and deep understanding of JavaScript.
  • Those who have been struggling to learn JavaScript and still don’t have a clear understanding or feel confident to code real applications.
  • Individuals interested in using popular libraries/frameworks like React, Angular, Vue, or Node in the future.
  • Experienced JavaScript developers seeking an advanced course that covers expert topics.
  • Beginners who want to get started with programming, with JavaScript serving as a great first language.

Is this course suitable for beginners?

Absolutely! “The Complete JavaScript Course 2023: From Zero to Expert!” is designed to cater to both beginners and experienced developers. The course starts with the basics and gradually progresses to advanced topics, ensuring a smooth learning curve for all students.

What kind of time is the course?

What kind of time is the course?
The course’s more than 30 hours of tutorial video cover a variety of JavaScript concepts and methods. You do, however, have the freedom to study at your own pace and return to the lessons whenever necessary.

Will I receive a certificate upon completion?

While this course does not offer a formal certificate, the knowledge and skills you acquire will be invaluable in your journey as a JavaScript developer. You can showcase your projects and newly gained expertise in your portfolio or during job interviews.

Free now and get started on your JavaScript journey with “The Complete JavaScript Course 2023: From Zero to Expert!” This course is suitable for both beginners and experienced developers. With over 30 hours of tutorial video content, you’ll dive into various JavaScript concepts and methods.

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