JavaScript Joel

Cofounded Host Collective (DiscountASP.net). Cofounded Player Axis (Social Gaming). Computer Scientist and Technology Evangelist with 20+ years of experience with JavaScript!

Joined on Jan 27, 2017 http://joel.net

JavaScript Joel

Nov 3 '20

🧠 I Code Differently Depending on These 5 Project Types

#patterns #projects #programmer

4 min read

Functional JavaScript - Functors, Monads, and Promises

The type in question here is Array. So when you map on an arr...

May 9

React 18 - Avoiding Use Effect Getting Called Twice

Probably just a minor copy/paste bug, but there is an extra o...

May 5

An introduction to MojiScript's enhanced map

Good catch! I have updated the post. Cheers! 🍻

Jun 30 '21

What free open API's do you use to demo code?

National Park Service has an API. That's interesting. 🤔

Jan 6 '21

Creating a linked list using only Function Combinators

Awesome. Looks like I had to resave the page.

Dec 18 '20

Why pressing the key works only once in my React project?

This looks like an issue with stale values inside of useEffec...

Dec 9 '20

Your favorite free hosting site? 🌐

Funny timing. I released a video just today where I setup hos...

Oct 26 '20

View last 250 Comments

JavaScript Joel

Oct 26 '20

FREE JamStack / Static Site Hosting with Keybase.io

#webdev #hosting #jamstack

2 min read

JavaScript Joel

Oct 22 '20

Custom Array Sort Algorithms in JavaScript

#javascript #sort

3 min read

JavaScript Joel

Oct 16 '20

This Week in JavaScript by Joel 2020-10-16

3 min read

JavaScript Joel

Oct 15 '20

Simulated Function Overloading in JavaScript

#javascript

2 min read

JavaScript Joel

Oct 13 '20

How I Setup My Own Personal CDN using Cloudflare and S3

#aws #hosting #cdn #webhosting

92 20

4 min read

JavaScript Joel

Oct 10 '20

This Week in JavaScript by Joel 2020-10-08

#javascript #react #node

3 min read

JavaScript Joel

Oct 9 '20

#SadJavaScript Comics Are Now Open Source!

1 min read

JavaScript Joel

Oct 6 '20

How One Guy Ruined #Hacktoberfest2020 #Drama

45 22

4 min read

JavaScript Joel

Oct 1 '20

This Week in JavaScript by Joel 9/30/2020

#javascript #react

2 min read

JavaScript Joel

Sep 28 '20

BEWARE of React.useEffect Race Condition 🐛 BUGS

#javascript #react

54 6

3 min read

22:35

JavaScript Joel

Sep 14 '20

make your own custom STATIC SITE GENERATOR with NodeJS

#javascript #node

1 min read

07:32

JavaScript Joel

Sep 1 '20

INVERT IF STATEMENTS and EARLY RETURNS to improve your code readability

#javascript

19 1

1 min read

08:33

JavaScript Joel

Aug 31 '20

TREAT JAVASCRIPT'S `THIS` AS A FUNCTION ARGUMENT

#javascript

1 min read

08:03

JavaScript Joel

Aug 25 '20

3 SIMPLE TRICKS FOR RECURSION OVER A TREE STRUCTURE in JavaScript / NodeJS

#javascript #node

25 2

1 min read

04:12

JavaScript Joel

Aug 17 '20

CREATE AN INSTANT HTTP SERVER for localhost development or create a public URL for clients

#node #javascript

1 min read

15:28

JavaScript Joel

Aug 3 '20

CLUSTER MULTI THREADED NODEJS -- Run threads in parallel to speed up long processes

#javascript #node

51 5

1 min read

15:28

JavaScript Joel

Jul 24 '20

CLUSTER MULTI THREADED NODEJS -- Run threads in parallel to speed up long processes

#javascript #node

1 min read

1:04:00

JavaScript Joel

Jul 21 '20

CUSTOM REACT STATIC SITE GENERATOR (Live Coding) [Part 2] | JavaScript | NodeJS | ReactJS

#javascript #node #react

7 2

1 min read

43:37

JavaScript Joel

Jul 15 '20

CUSTOM STATIC SITE GENERATOR (Live Coding) [Part 1] | JavaScript | NodeJS | Images

#javascript #livecoding #jamstack

1 min read

05:01

JavaScript Joel

Jul 2 '20

Visualizing Closures with the VSCode Debugger

#javascript #closures #video

96 4

1 min read

03:58

JavaScript Joel

Jun 30 '20

Minute JavaScript - Apply Bind Call function methods

#javascript #video

17 1

1 min read

02:45

JavaScript Joel

Jun 15 '20

Minute JavaScript - indexOf, includes, find, and as a bonus findIndex

#javascript #video

45 4

1 min read

04:58

JavaScript Joel

Jun 8 '20

Minute JavaScript - Array's reduce method

#javascript #video

1 min read

02:31

JavaScript Joel

Jun 4 '20

Minute JavaScript - Array's filter method

#javascript #video

1 min read

03:26

JavaScript Joel

May 29 '20

Minute JavaScript - Array's map method

#javascript #video

10 2

1 min read

01:43

JavaScript Joel

May 21 '20

Minute JavaScript - Array's forEach method

#javascript #video

1 min read

JavaScript Joel

Aug 2 '19

What steps are you taking TODAY to prevent today's code from becoming tomorrow's LEGACY APP?

#discuss

9 2

1 min read

JavaScript Joel

Jul 17 '19

Code and a Poem about Software

#javascript #fun #beginners

1 min read

JavaScript Joel

Jun 25 '19

Weird things you can (but shouldn't) do with JavaScript tagged templates

#es6 #javascript

38 5

1 min read

JavaScript Joel

Jun 6 '19

React: "I really wish this is how I could write components."

#showdev #react #javascript

356 46

1 min read

JavaScript Joel

Jun 5 '19

Live Coding a refactoring of a Node.js (JavaScript) Bitcoin Twitter Bot on Twitch

#showdev #livecoding #node #javascript

1 min read

JavaScript Joel

Jun 4 '19

I will be 🔥 LiveCoding JavaScript on Twitch at 7:30 PM PST (Jun 4 2019)

#showdev #opensource #javascript #node

13 11

1 min read

JavaScript Joel

May 16 '19

Looking for beta testers for express-easy-routes

#javascript #express #node #opensource

15 7

1 min read

JavaScript Joel

May 7 '19

What is your output target for publishing NPM modules?

#discuss #npm #build

2 min read

JavaScript Joel

Jan 4 '19

What free open API's do you use to demo code?

#discuss #api

33 14

1 min read

JavaScript Joel

Dec 10 '18

Creating a linked list using only Function Combinators

#showdev #javascript #functional

87 18

7 min read

JavaScript Joel

Nov 27 '18

Getting node.js and Express up and running on my... phone?

#android #mobile #javascript #node

48 11

2 min read

JavaScript Joel

Nov 27 '18

Deconstructing Map, Filter, and Reduce

#javascript #functional #reduce

92 8

5 min read

JavaScript Joel

Nov 21 '18

Map, Filter, Reduce vs For Loops (syntax)

#javascript #functional

147 12

3 min read

JavaScript Joel

Nov 19 '18

Introducing Pico Redux - The faster smaller Redux!

#javascript #functional #es6 #redux

2 min read

JavaScript Joel

Nov 6 '18

Functional JavaScript - Functors, Monads, and Promises

#javascript #functional

251 13

6 min read

JavaScript Joel

Nov 1 '18

Challenge: Parse simple and complex types from a string

#challenge #javascript

11 22

1 min read

JavaScript Joel

Oct 30 '18

An introduction to MojiScript's enhanced map

#showdev #javascript #mojiscript #functional

14 2

4 min read

JavaScript Joel

Oct 30 '18

NULL, "The Billion Dollar Mistake", Maybe Just Nothing

#showdev #javascript #mojiscript #functional

69 20

8 min read

JavaScript Joel

Oct 16 '18

Functional vs Imperative Patterns in JavaScript

#functional #javascript #mojiscript

104 12

5 min read

JavaScript Joel

Oct 15 '18

Let's talk about the state of auto-generated documentation tools for JavaScript

#discuss #javascript #tools

61 23

3 min read

JavaScript Joel

Oct 15 '18

Ask me dumb questions about functional programming

#discuss #javascript #beginners

24 36

2 min read

JavaScript Joel

Oct 15 '18

Let's make a DEV.to CLI... together

#showdev #hacktoberfest #node #mojiscript

132 24

11 min read

JavaScript Joel

Oct 8 '18

The easiest problem you cannot solve.

#challenge #programming #javascript

68 43

1 min read

JavaScript Joel

Oct 8 '18

setTimeout is a callback-style function. What would happen if we change that?

#programming #functional #javascript #mojiscript

57 4

6 min read

JavaScript Joel

Sep 28 '18

Getting started with MojiScript: Async, Infinity, Testing (part 2).

#functional #javascript #mojiscript

6 min read

JavaScript Joel

Sep 27 '18

Getting started with MojiScript: FizzBuzz (part 1)

#functional #javascript #mojiscript

33 7

6 min read

JavaScript Joel

Sep 24 '18

Why async code is so damn confusing (and a how to make it easy)

#programming #javascript #async #mojiscript

208 23

6 min read

JavaScript Joel

Sep 10 '18

Should I break down my code if it'll only be used once?

#discuss #programming #refactoring

9 1

2 min read

JavaScript Joel

Aug 31 '18

The Ternary Operator vs The Conditional Operator WTF

#javascript #programming #grammar

32 16

4 min read

JavaScript Joel

Aug 14 '18

Creating React components without this. #nothis

#javascript #react #nothis

38 9

3 min read

JavaScript Joel

Aug 8 '18

Rethinking JavaScript: The complete elimination and eradication of JavaScript's this.

#javascript #this

172 176

3 min read

JavaScript Joel

May 10 '18

I ❤ Ramda - Partial Application with a Special Placeholder

#javascript #ramda #es6

39 2

4 min read

JavaScript Joel

Apr 4 '18

Functional Programming: Alternatives to the IF #Functional #JavaScript #Functors

#javascript #es6 #functional #functors

89 11

4 min read

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Recent comments

Functional JavaScript - Functors, Monads, and Promises

React 18 - Avoiding Use Effect Getting Called Twice

An introduction to MojiScript's enhanced map

What free open API's do you use to demo code?

Creating a linked list using only Function Combinators

Why pressing the key works only once in my React project?

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