1. How to use this course
2. What is JavaScript used for?
3. The JavaScript ecosystem
4. Varying versions of JavaScript

1. Linking your JavaScript file
2. Preparing your text editor
3. The console
4. Comments
5. You don’t need semicolons
6. Strings, numbers, and booleans
7. Declaring variables
8. Functions
9. Arrow functions
10. Intro to objects
11. If/else statements
12. The NOT operator
13. Null and undefined
14. The BOM and the DOM
15. Selecting an element
16. Changing classes
17. Listening to events
18. Callbacks

1. How to think like a developer
2. How to use the starter template
3. Do this for every component
4. 🛠️ Building an off-canvas menu
5. 🛠️ building a modal window
6. Lessons from the building process
7. Debugging errors
8. How to use a linter

1. Introduction to arrays
2. Array methods
3. For loops
4. The forEach loop
5. Selecting multiple elements
6. Node vs Elements
7. 🛠️ Building an accordion

1. Id, classes, tags, and attributes
2. Changing CSS with JavaScript
3. Getting CSS with JavaScript
4. Changing attributes
5. Finding an element’s size and position
6. DOM Traversals
7. 🛠️ Building a Tabbed Component
8. 🛠️ Carousel: HTML and CSS
9. 🛠️ Carousel: Switching slides with JavaScript
10. 🛠️ Carousel: Working the dots
11. 🛠️ Carousel: Positioning slides with JavaScript

1. The listening element
2. Default behaviors
3. Event propagation
4. Event delegation
5. Removing event listeners
6. 🛠️ Modal: Closing the modal
7. 🛠️ Accordion: Event delegation
8. 🛠️ Tabby: Event delegation
9. 🛠️ Carousel: Event delegation

1. CSS transitions
2. CSS animations
3. Silky-smooth animations
4. Integrating CSS transitions and animations with Javascript
5. JavaScript animations
6. The Greensock Animation API (GSAP)
7. 🛠️ Modal: Animating the modal
8. 🛠️ Modal: Animating the pointing hand
9. 🛠️ Modal: Animating the waving hand
10. 🛠️ Modal: Modal: Wave hand animation with JavaScript (using GSAP)
11. 🛠️ Modal: Wave hand animation with JavaScript (using GSAP)
12. 🛠️ Accordion: Animations
13. 🛠️ Carousel: Animations

I’ve been trying to understand CSS transitions and animations for so many times, and I failed each time in the past.

I never thought I would understand CSS transitions and animations while learning JavaScript, but I did. The CSS transitions and animation lessons in Learn JavaScript is so clear and easy to understand. This is beyond my expectation.

1. Ternary operators
2. And and OR operators
3. Early returns
4. Template literals
5. Destructuring
6. Default parameters
7. Enhanced object literals
8. Rest and spread operators
9. Useful array methods
10. Reduce
11. Looping through objects
12. Returning objects with implicit return
13. 🛠️ Accordion: Using useful JavaScript features
14. 🛠️ Tabby: Using useful JavaScript features
15. 🛠️ Carousel: Useful JavaScript features

1. Write declarative code
2. Functions with a purpose
3. Manage scope
4. Reduce state changes
5. Don’t reassign
6. Don’t mutate
7. Preventing Objects from mutating
8. Preventing Arrays from mutating
9. Write pure functions
10. 🛠️ Accordion: Refactor
11. 🛠️ Carousel: First refactor
12. 🛠️ Carousel: Refactoring the dots part
13. 🛠️ Carousel: Previous and next buttons
14. 🛠️ Carousel: Second refactor

1. Changing text and HTML
2. Creating HTML elements
3. Adding multiple elements to the DOM
4. Removing elements from the DOM
5. 🛠️ Carousel: Creating dots with JavaScript
6. 🛠️ Calculator: HTML and CSS
7. 🛠️ Calculator: Happy Path
8. 🛠️ Calculator: Testing the Happy Path Path
9. 🛠️ Calculator: Easy Edge Cases
10. 🛠️ Calculator: Difficult Edge Cases Cases
11. 🛠️ Calculator: Refactoring
12. The Switch Statement
13. 🛠️ Calculator: Refactoring part 2
14. 🛠️ Popover: Making one popover
15. 🛠️ Popover: Making four popovers
16. 🛠️ Popover: Making popovers with JavaScript

At first, I didn’t know if Learn JavaScript was worth it. I was familiar with the first ten modules already. But now, I’m halfway into the course and I totally love it.

Learn JavaScript gave me a deep understanding of the language and its capabilities. I gained new perspectives on things I already know, and I learned new things like Forms and APIs.

1. Intro to forms
2. Selecting form fields with JavaScript
3. Form fields and their events
4. Sanitize your output
5. Generating unique IDs
6. 🛠️ Popover: Dynamic ID
7. 🛠️ Todolist: The HTML and CSS
8. 🛠️ Todolist: Creating tasks with JavaScript
9. 🛠️ Todolist: Deleting tasks with JavaScript
10. 🛠️ Typeahead: The HTML and CSS
11. 🛠️ Typeahead: Displaying predictions
12. 🛠️ Typeahead: Selecting a prediction
13. 🛠️ Typeahead: Bolding search terms

1. The Date Object
2. Getting a formatted date
3. Getting the time
4. Local time and UTC Time
5. Setting a specific date
6. Setting a date with Date methods
7. Adding (or subtracting) date and time
8. Comparing Dates and times
9. 🛠️ Datepicker: Initial HTML and CSS
10. 🛠️ Datepicker: Building the calendar
11. 🛠️ Datepicker: Building the datepicker with JavaScript
12. 🛠️ Datepicker: Previous and next buttons
13. 🛠️ Datepicker: Selecting a date
14. 🛠️ Datepicker: Positioning the datepicker
15. 🛠️ Datepicker: Showing and hiding
16. Formatting a date with toLocaleString
17. setTimeout
18. setInterval
19. 🛠️ Countdown: The HTML and CSS
20. 🛠️ Countdown: The JavaScript
21. 🛠️ Countdown: Counting months
22. 🛠️ Countdown: Daylight Saving Time
23. 🛠️ Countdown: Counting years

1. Introduction to Ajax
2. Understanding JSON
3. The Fetch API
4. Possible data types
5. JavaScript Promises
6. Requests and responses
7. Sending a POST request
8. Authentication
9. Handling errors
10. Viewing response headers
11. CORS and JSONP
12. XHR vs Fetch
13. Using an Ajax library
14. Reading API documentation
15. Understanding curl
16. 🛠️ Todolist: The Todolist API
17. 🛠️ Todolist: Fetching tasks
18. 🛠️ Todolist: Creating tasks
19. 🛠️ Todolist: Editing tasks
20. 🛠️ Todolist: Deleting tasks
21. 🛠️ Todolist: Creating tasks with Optimistic UI
22. 🛠️ Todolist: Handling Optimistic UI errors
23. 🛠️ Todolist: Editing tasks with Optimistic UI
24. 🛠️ Todolist: Deleting tasks with Optimistic UI
25. 🛠️ Todolist: Refactor
26. 🛠️ Typeahead: How to add Ajax
27. 🛠️ Typeahead: Adding Ajax
28. 🛠️ Typeahead: Handling errors
29. 🛠️ Google Maps Clone: Creating your first Google Map
30. 🛠️ Google Maps Clone: Fetching JSONP via JavaScript
31. 🛠️ Google Maps Clone: Drawing directions
32. 🛠️ Google Maps Clone: Driving directions
33. 🛠️ Google Maps Clone: Handling errors
34. 🛠️ Google Maps Clone: Adding stopovers
35. 🛠️ Google Maps Clone: Refactor

Learn Javascript showed me the full landscape of the Vanilla JavaScript ecosystem. Everything Zell taught laid an important foundation, and I immediately get to use them on practical projects.

I became more confident with my existing skills and I filled up any gaps I had. Every time I jump into the course I learn something to deepen my javascript knowledge, and I become more marketable for work in the future.

I’ve become more confident writing Javascript. I’ve increased my Javascript knowledge, and I’ve also saved a lot of time searching around the internet trying to learn what Zell has put all together in one incredible resource.

1. Requesting many resources at once New
2. Asynchronous functions New
3. Handling multiple awaits New
4. Asynchronous loops New
5. 🛠️ Dota Heroes: Listing heroes
6. 🛠️ Dota Heroes: Filtering heroes (Part 1)
7. 🛠️ Dota Heroes: Filtering heroes (Part 2)
8. 🛠️ Dota Heroes: Refactoring
9. 🛠️ Dota Heroes: Hero Page New
10. 🛠️ Dota Heroes: Making the hero page robust New
11. 🛠️ Dota Heroes: Heroes page refactor

1. Keyboard users
2. Handling commonly used keys
3. Keyboard events
4. Understanding Tabindex
5. Detecting the focused element
6. Directing focus
7. Preventing people from tabbing into elements
8. How to choose keyboard shortcuts
9. Creating single-key shortcuts
10. 🛠️ Off-canvas: Adding keyboard interaction
11. 🛠️ Modal: Adding keyboard interaction
12. 🛠️ Accordion: Adding keyboard interaction
13. 🛠️ Tabby: Adding keyboard interaction
14. 🛠️ Tabby: Refactoring
15. 🛠️ Carousel: Adding keyboard interaction
16. 🛠️ Carousel: Displaying help text
17. 🛠️ Calculator: Adding keyboard interaction
18. 🛠️ Popover: Keyboard
19. 🛠️ Popover: Refactor
20. Keyboard shortcuts with Command and Control modifiers
21. 🛠️ Todolist: Keyboard
22. 🛠️ Typeahead: Keyboard
23. 🛠️ Typeahead: Selecting a prediction with the keyboard
24. 🛠️ Google Maps Clone: Keyboard
25. 🛠️ Dota Heroes: Keyboard
26. 🛠️ Datepicker: Tabbing in and out
27. 🛠️ Datepicker: Keyboard shortcuts

—Accessibility

1. What is accessibility?
2. How to use a screen reader
3. Using NVDA
4. Using Voiceover
5. Aria roles
6. Landmark roles
7. Document structure roles
8. Live region roles
9. Widget roles
10. Window and Abstract roles
11. Accessible names and descriptions
12. Hiding content
13. ARIA properties and ARIA states
14. ARIA for expandable widgets
15. 🛠️ Off-canvas: Accessibility
16. ARIA for modal dialogs
17. 🛠️ Modal: Screen reader accessibility
18. 🛠️ Accordion: Screen reader accessibility
19. ARIA for Tabbed components
20. 🛠️ Tabby: Screen reader accessibility
21. 🛠️ Tabby: Refactor
22. 🛠️ Carousel: Screen reader accessibility
23. Roles that trigger Forms and Application modes
24. What’s next for accessibility

—Handling Scroll

1. The Scroll event
2. 🛠️ Auto-hiding Sticky-nav: HTML and CSS
3. 🛠️ Auto-hiding Sticky-nav: JavaScript
4. 🛠️ Auto-hiding Sticky-nav: Natural reveal
5. Intersection Observer API
6. Intersection Observer Options
7. 🛠️ Slide & Reveal
8. 🛠️ Slide & Reveal: Always fade-in when you scroll down
9. 🛠️ Slide & Reveal: Fine-tuning the animation
10. 🛠️ Infinite Scroll: Anatomy
11. 🛠️ Infinite Scroll: Infinite load
12. 🛠️ Infinite Scroll: Refactor
13. 🛠️ Infinite Scroll: Implementing the Infinite Scroll

Mouse, Touch, and Pointers

1. Mouse Events
2. 🛠️ Spinning Pacman: HTML and CSS
3. 🛠️ Spinning Pacman: JavaScript
4. Touch events
5. Pointer events
6. Touch-action
7. 🛠️ Spinning Pacman: Supporting Touch
8. Cloning elements
9. 🛠️ DragDrop: HTML and CSS
10. 🛠️ DragDrop: JavaScript
11. 🛠️ DragDrop: Creating a drop preview
12. 🛠️ DragDrop: Sortable drop preview
13. 🛠️ DragDrop: Robustness
14. 🛠️ DragDrop: Refactor

I thought the price seemed a little high at first but I always found Zell’s content informing and easy to understand so I bought the course, and I’m glad I did!

The content in Learn Javascript is easy to understand and laid out in a way that builds in the areas you need to know for web development fundamentals. Even for an industry veteran like myself, I’ve found that knowing the fundamentals is most important, regardless of what framework you decide to work in.

I highly recommend taking this course whether you’re starting out or already experienced in Javascript.

Tom Mulkins

—Object-oriented programming

1. Before we begin
2. What is Object Oriented Programming?
3. Four Flavours of Object Oriented Programming
4. Inheritance
5. This in JavaScript
6. Call, bind, apply
7. Creating Derivative Objects
8. Composition vs Inheritance
9. Polymorphism
10. Encapsulation
11. Closures
12. Encapsulation in Object Oriented Programming
13. Getters and Setters
14. What OOP flavour to use
15. When to use Object Oriented Programming

—Writing reusable code

1. Creating reusable code by writing libraries
2. Two Types of libraries Updated
3. Including libraries with Script tags
4. Including libraries with ES6 Modules
5. Dynamic imports
6. 🛠️ Off Canvas: Building a Library Updated
7. 🛠️ Modal: Library setup
8. 🛠️ Modal: Opening the Modal
9. 🛠️ Modal: Closing the modal
10. 🛠️ Modal: Inheritance and Polymorphism
11. 🛠️ Modal: Resolving differences between subclasses
12. 🛠️ Modal: Exposing properties and methods
13. 🛠️ Accordion: Building a library
14. 🛠️ Tabby: Building a library
15. 🛠️ Carousel: Building a library
16. 🛠️ Calculator: Library
17. 🛠️ Calculator: Fixing the Clear Key
18. 🛠️ Calculator: Handling other keys
19. 🛠️ Calculator: State
20. 🛠️ Popover: Library
21. 🛠️ Popover: Adding event listeners
22. 🛠️ Typeahead: Library
23. 🛠️ DatePicker: Library

—Vanilla JS to Frameworks

1. 🛠️ Building a Tiny framework
2. 🛠️ Tiny: Add event listeners
3. 🛠️ Tiny: Updating state
4. 🛠️ Tiny: Rendering Child Components
5. 🛠️ Tiny: Changing Parent State
6. 🛠️ Tiny: Passing Props
7. 🛠️ Tiny: Multiple Props
8. 🛠️ Tiny: Passing values from sibling components
9. 🛠️ Tiny: Mounting
10. 🛠️ Tiny: Passing props to descendants
11. 🛠️ Tiny: A tiny refactor

—Single page applications

1. What is a Single Page App?
2. Simple SPA using only CSS
3. The Location Interface
4. The History Interface
5. Minimum viable server for a SPA
6. 🛠️ Dota SPA: Introduction
7. 🛠️ Dota SPA: Building The Heroes List
8. 🛠️ Dota SPA: Building the filters
9. 🛠️ Dota SPA: Filtering heroes
10. 🛠️ Dota SPA: Displaying filtered heroes
11. 🛠️ Dota SPA: Getting Ready to build the Hero Page
12. 🛠️ Dota SPA: Building the hero page
13. 🛠️ Dota SPA: Lore and abilities
14. 🛠️ Dota SPA: Routing for Single-page apps

🛠️: Practical lessons where we build things.

Learn JavaScript is my number one choice for learning JavaScript. I finally feel that JavaScript is within my reach.

Elmir Halebic

Learn to build 20 components

Learn to build practical components you use at work — you get to:

• Understand how each component works
• Build them from scratch (without frameworks or libraries)
• Tweak them so you improve their usability and accessibility.

We’ll cover each component step-by-step — even if the difficulty of components rises as you go thorugh the course.

Here are the 20 components you’ll build:

1. Off-canvas Menu
2. Modal Window
3. Accordion
4. Tabbed Component
5. Carousel
6. Calculator
7. Popover
8. Todolist
9. Typeahead
10. Datepicker

1. Countdown Timer
2. Google Maps Clone
3. Dota Heroes Page
4. Auto-hiding Sticky Nav
5. Slide & Reveal
6. Infinite Scroll
7. Spinning Pacman
8. Drag and Drop
9. A Tiny Framework
10. Dota Heroes SPA

Here’s a sneak peek of the components:

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Written to help you learn

I have a bold aim for Learn JavaScript — When you complete the course, you can build anything you want from scratch without Googling for answers.

You will understand JavaScript no matter what level you’re at.

I improved the lessons over and over based on past students’ experiences. You’ll learn the right things in the right order. I’m here to ensure you have the best possible experience with JavaScript.

Learn JavaScript takes you through all the steps in building the components. The course doesn’t stop after the first steps. It shows you how to improve the component and include best practices.

This is something I found so hard to learn from other courses. I finally started to understand how to move on from a beginner level to an intermediate level.

Please be aware that this course does not consist of video content. It is not designed to be effectively learned through a video format. Instead, this course is web-based, relying on web pages for instruction and learning materials.