ColorCode

Videos Courses Podcast Merch Login

20 Things JavaScript Developers Should Know

VIDEOS

EPISODE 1
JavaScript Prototypal Inheritance
How inheritance works in JavaScript
EPISODE 2
JavaScript Prototypes
What is a Prototype and how is it different from __proto__?
EPISODE 3
Factory Functions
What are Factory Functions in JavaScript
EPISODE 4
Constructor Functions
What are Constructor Functions in JavaScript and why?
EPISODE 5
Factory Function vs. Constructor
What is the difference between Factories and Constructors in JavaScript?
EPISODE 6
JavaScript THIS keyword
The original f*cking a**hole of JavaScript: The THIS keyword!
EPISODE 7
Arrow Functions
An in-depth look into JavaScript Arrow Functions
EPISODE 8
Higher Order Functions
What are Higher Order Functions and why are they useful?
EPISODE 9
Closures
What are Closures in JavaScript and why they are so incredibly powerful
EPISODE 10
Value vs. reference
What do you mean when we say copy by Value vs. copy by Reference?
EPISODE 11
Async JavaScript
Synchronous vs. Asynchronous in JavaScript
EPISODE 12
JavaScript Promises
What are Promises and how do they work in JavaScript?
EPISODE 13
Async Await
What is Async/Await and how do we use them with Promises?
EPISODE 14
Fetch API
JavaScript Fetch API, how to use in with Promises, how it is different from XHR?
EPISODE 15
DOM API
JavaScript DOM API, one of the most underrated but fundamentally important Web APIs.
EPISODE 16
JavaScript Pure Functions
Two major rules that make any function pure, benefits of pure function, as well as why some functions can't be pure.
EPISODE 17
7 Benefits of First-Class Functions
Functions in JavaScript are First-Class. But what does that mean? Plus, their 7 benefits.
EPISODE 18
JavaScript Event Loop
What is the JavaScript Event Loop? How the Event Loop manages tasks, microtasks, and the call stack.
EPISODE 19
Declarative vs. Imperative
The difference between Declarative and Imperative paradigms in Functional Programming.
EPISODE 20
Immutability
With immutability, we can defy the impermanence of life, when it makes sense.

Last Updated: May 2, 2025

JavaScript Promises

What are Promises and how do they work in JavaScript?

Promises Promises Promises.

Empty Promises.

Broken Promises.

Fulfilled Promises.

JavaScript Promises.

A modern feature that in many ways revolutionized how we write asynchronous code, and code in general.

This, is the last video you’re gonna need to watch on Promises. That I promise you...😏 Ok no more promise jokes ok?… That’s it… no more… I promise! 😏