Frontend Developer Forum>Blogs/Articles/Talks

JS is weird - a fun and tricky JavaScript quiz

CommunityNews

CommunityNews

JS is weird - a fun and tricky JavaScript quiz

JavaScript is a great programming language, but thanks to the fact that its initial release was built in only ten days back in 1995, coupled with the fact that JS is backward-compatible, it’s also a bit weird. It doesn’t always behave the way you might think. In this quiz, you’ll be shown 25 quirky expressions and will have to guess the output. Even if you’re a JS developer, most of this syntax is probably, and hopefully, not something you use in your daily life.

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

View thread on forum
/js
2 739 0

Popular Frontend topics Top

PragmaticBookshelf
Frontend Developer Forum>Learning Resources

Programming WebAssembly with Rust
WebAssembly fulfills the long-awaited promise of web technologies: fast code, type-safe at compile time, execution in the browser, on emb...
#web-development#pragprog#published-book/book-programming-webassembly-with-rust
2 1099 0
New
AstonJ
Frontend Developer Forum>Learning Resources

Svelte learning resources
If you know of any good learning resources for Svelte please post them here :smiley: Here’s some to get us started: The official tutori...
/svelte#video
18 1830 10
New
finner
Frontend Developer Forum>Chat/Discussions

Spring Resources
Some resources for Spring Home of Spring Spring Initializr Head First Spring with Reactor
/spring
2 1028 0
New
First poster: bot
Frontend Developer Forum>Libraries/Tools

Elm-designer - a code generator for Elm UI
passiomatic/elm-designer. A code generator for Elm UI. Contribute to passiomatic/elm-designer development by creating an account on GitH...
github.com
/elm
0 1174 0
New
PragmaticBookshelf
Frontend Developer Forum>Learning Resources

Modern CSS with Tailwind
Tailwind CSS is an exciting new CSS framework that allows you to design your site by composing simple utility classes to create complex e...
#pragprog#published-book/book-modern-css-with-tailwind/tailwind
12 2584 4
New
First poster: bot
Frontend Developer Forum>News

Fable 3.1.3 released!
Fable 3.1.3 has been released. Link: Release 3.1.3 · fable-compiler/Fable · GitHub
github.com
/fable#official-news
0 1046 0
New
First poster: AstonJ
Frontend Developer Forum>News

What's new in Svelte: November 2021
A new Svelte blog post/announcement has been posted! Get the full details here: https://svelte.dev/blog/whats-new-in-svelte-november-2021
svelte.dev
/svelte#official-news
28 1259 9
New
First poster: bot
Frontend Developer Forum>Libraries/Tools

Pablo is a small, open-source JavaScript library for SVG
Pablo is a small, open-source JavaScript library for SVG, the web standard for vector graphics. It can be used for vector-based art, game...
pablojs.com
/js#library#svg
0 1014 0
New
Fl4m3Ph03n1x
Frontend Developer Forum>Questions/Help

Enable/disable a button in Phoenix 1.7 depending on state
Background I have a button that may be disabled or not, depending on a set of conditions. I want to disable/enable the button without hav...
/elixir/phoenix#liveview
2 784 1
New
NewsBot
Frontend Developer Forum>News

React v18.3.1 released!
React v18.3.1 has been released. Link: Release 18.3.1 (April 26, 2024) · facebook/react · GitHub
github.com
/react#official-news
0 523 0
New

Other popular topics Top

Devtalk
General Dev Chat

HELLO WORLD (Introductions thread!)
Hello Devtalk World! Please let us know a little about who you are and where you’re from :nerd_face:
#community
476 5521 111
New
malloryerik
Frontend Developer Forum>Chat/Discussions

Svelte - what do you think about it?
Any thoughts on Svelte? Svelte is a radical new approach to building user interfaces. Whereas traditional frameworks like React and Vue...
#opinions/svelte
54 3310 17
New
wolf4earth
Health & Diet

How do you keep fit and healthy?
@AstonJ prompted me to open this topic after I mentioned in the lockdown thread how I started to do a lot more for my fitness. https://f...
#fitness#heath
193 4260 82
New
DevotionGeo
Backend Developer Forum>Chat/Discussions

What is the reason behind Rust’s web framework, Rocket, not performing as well as expected in the Techempower benchmarks?
I know that these benchmarks might not be the exact picture of real-world scenario, but still I expect a Rust web framework performing a ...
/rust#web-frameworks
36 6155 11
New
AstonJ
General Dev Chat

Which language or framework do you want to learn next?
Curious to know which languages and frameworks you’re all thinking about learning next :upside_down_face: Perhaps if there’s enough peop...
#community#learning
236 5547 90
New
mafinar
Journals & Book Clubs

Programming Crystal Book Club
Crystal recently reached version 1. I had been following it for awhile but never got to really learn it. Most languages I picked up out o...
/crystal/book-programming-crystal#book-club
155 4122 65
New
AstonJ
macOS Developer Forum>Chat/Discussions

How to block any website on Mac using Little Snitch
If you want a quick and easy way to block any website on your Mac using Little Snitch simply… File > New Rule: And select Deny, O...
#macos#littlesnitch#how-to
5 7235 3
New
PragmaticBookshelf
In The Spotlight

Spotlight: VM Brasseur (Author) Interview and AMA!
Author Spotlight: VM Brasseur @vmbrasseur We have a treat for you today! We turn the spotlight onto Open Source as we sit down with V...
#author-spotlight/book-forge-your-future-with-open-source
16 3805 11
New
CommunityNews
In The News

X can’t stop spread of explicit, fake AI Taylor Swift images
Will Swifties’ war on AI fakes spark a deepfake porn reckoning?
arstechnica.com
/swift
0 5645 0
New
AstonJ
Artificial Intelligence Forum

DeepSeek (671B) running on a cluster of 8 Mac Mini Pros with 64GB RAM each
This is cool! DEEPSEEK-V3 ON M4 MAC: BLAZING FAST INFERENCE ON APPLE SILICON We just witnessed something incredible: the largest open-s...
#ai#macs/deepseek
0 2498 1
New
Back to top

Latest in Frontend

Deno v2.1.12 released!
Frontend News
Deno v2.1.11 released!
Frontend News
Preact 10.26.5 released!
Frontend News
What’s new in Svelte: April 2025
Frontend News
What is the Basic Cost to Hire Developers in Asia?
Frontend Questions/Help
Tailwind v4.0.17 released!
Frontend News
Tailwind v4.0.16 released!
Frontend News
Tailwind v4.0.15 released!
Frontend News
Build AI-Powered Apps With Genkit and Angular
Frontend News
Fable 5.0.0-alpha.12 released!
Frontend News
Tailwind v4.0.14 released!
Frontend News
AssemblyScript v0.27.35 released!
Frontend News
Can ReactJS and LiveView coexist nicely?
Frontend Chat/Discussions
Angular: Seamless data fetching with httpResource
Frontend News
Tailwind v4.0.10 released!
Frontend News
Angular 19.2 Is Now Available
Frontend News
What’s new in Svelte: March 2025
Frontend News
Fable 5.0.0-alpha.11 released!
Frontend News
Preact 10.26.4 released!
Frontend News
TypeScript v5.8-rc released!
Frontend News

View all threads ❯

Latest (all)

V weekly.2025.16 released!
Backend News
Kotlin v2.2.0-Beta1 released!
Backend News
React Native v0.79.1 released!
Hybrid News
Kotlin: The Story Behind K2 Mode and How It Works
Backend News
openSUSE: Freedom Means Knowing What’s Installed
Linux News
Thinking Elixir Podcast 249: LiveDebugger: Peering Inside a LiveView
Blogs/Articles/Talks/Podcasts
Membrane Framework v1.2.3 released!
Backend News
Julia v1.11.5 released!
Backend News
Giraffe v8.0.0-alpha-002 released!
Backend News
Ruby 3.4.3 Released
Backend News
Ship Software That Does Nothing - Kerrick Long's Blog
In The News
AudioX: Diffusion Transformer for Anything-to-Audio Generation
In The News
Amid Trump tariff chaos, Nvidia launches AI chip production on US soil
In The News
PS5 price jumps £40 as Sony cites 'challenging' market conditions
In The News
An Ars Technica history of the Internet, part 1
In The News

View all threads ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that'll move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap