DEV Community: Muhammad Mubashir

JavaScript is weird!

Muhammad Mubashir — Sat, 24 Jan 2026 17:05:35 +0000

JavaScript is the only language where your brain melts in seconds.

So yesterday, I’m building some app, right? I’m checking types, doing calculations… and then I see this:

console.log(typeof NaN); // "number"

WTF JavaScript. NaN = Not a Number. Type = “number”? My brain just did a flip. How does this make sense?!

Then I try something else:

let a;
console.log(a + 2); // NaN
console.log(a); // undefined

Okay, so undefined + 2 = NaN. Makes sense… kinda. But typeof a is “undefined”. Sure, okay. But NaN is number? My brain just filed for early retirement.

I spend the next 20 minutes testing stuff:

console.log(null == undefined); // true
console.log(null === undefined); // false
console.log([] + []); // ""
console.log([] + {}); // "[object Object]"
console.log({} + []); // 0 ????

WHAT?! Why does JS do this to me? Why is [] + {} a string but {} + [] = 0???

At this point, I unlocked a new mental badge:

“JavaScript Survivor” — For staring at the console like it personally betrayed you.

Seriously, JS is fun… until it isn’t. But you still love it, because no other language would let typeof(NaN) === "number" and let you survive it.

Hi 👋

Muhammad Mubashir — Sat, 12 Jul 2025 00:36:29 +0000

👋 Hey friends! I'm Muhammad Mubashir, a passionate Web Developer who turns ideas into interactive digital experiences. I’ve been diving into web technologies and bringing concepts to life through clean code and creative design. Here's a peek at some of my recent work:

🌐 Cafe Delight – A modern, responsive cafe website built with HTML, CSS, and a touch of JavaScript to give visitors a deliciously smooth browsing experience.
💬 Chat Corner – A real-time chat web app where users can connect and message seamlessly — built using Firebase and modern JavaScript magic.
🌦️ Weather Vibe – A sleek weather app that gives you real-time weather updates with stylish UI and accurate location-based data.

I’m constantly learning, building, and improving. Whether it's front-end design or back-end functionality — I love the whole process. 💻✨

GitHub: https://github.com/ProgrammerMuhammadMubashir
Portfolio Website:
https://programmermuhammadmubashir.github.io/MyPortfolio/

Let’s connect, collaborate, or just talk tech! 🚀

WebDeveloper #HTML #CSS #JavaScript #Projects #CodingLife #Frontend #Backend

👋 Hey friends! I'm Muhammad Mubashir, a passionate Web Developer who turns ideas into interactive digital experiences. GitHub: https://github.com/ProgrammerMuhammadMubashir

Muhammad Mubashir — Sat, 12 Jul 2025 00:35:36 +0000

New to Community

Muhammad Mubashir — Sat, 28 Dec 2024 15:43:38 +0000