Pure vs Impure Functions in JavaScript: Predictable Code

📌 Question for Knowledge & Discussion (JavaScript) Explain the concept of an infinite loop in JavaScript using: for(;;) Also discuss different ways to stop this loop without using the break statement. ⚠️ Note: This is a discussion-based question. Please try to solve it yourself before checking any external help. Looking forward to your answers and different approaches! 💡

Still copying cURL commands into your terminal… just to convert them into fetch? Built a free tool to make it instant: ✅ Convert cURL to fetch (JavaScript) in seconds ✅ Clean, readable code output ✅ Saves time when testing APIs or debugging requests ✅ Works right in your browser — no setup needed No more manual rewriting. Just paste → convert → use. 🔗 https://lnkd.in/gmiSJRDM #365ToolsChallenge #buildinpublic #webdev #javascript

JavaScript performance tip: Use const and let instead of var. Why? → Block scoping prevents bugs → const signals immutability → Better for JS engines to optimize Small syntax change. Big impact on code quality. #JavaScript #BestPractices #Performance

Day 5/100 of JavaScript Today’s Topic: Closures in JavaScript A closure is created when a function remembers variables from its outer scope even after that outer function has finished execution Example: function outer() { let count = 0; return function inner() { count++; return count; }; } const counter = outer(); counter(); // 1 counter(); // 2 Here, the "inner" function forms a closure over the "count" variable. Even though "outer()" has finished execution, "count" is preserved. Key understanding: Closures help in maintaining state and also enable data privacy by restricting direct access to variables #Day5 #JavaScript #100DaysOfCode

How to understand a Javascript function? What arguments are passed? Why it is passed? What is the function doing inside? What it is returning? What does the JS doing with the returned value? If you can answer to all the questions then you have understood a function. #Javascript #frontenddevelopement

#Understanding JavaScript Functions: I’ve been revisiting some core JavaScript concepts lately — and these four always stand out: Function Expression → When a function is stored in a variable. Function Statement → A regular function declaration. First-Class Functions → Functions can be passed, returned, or assigned like values. Closures → Inner functions remember variables from their outer scope. Simple ideas, but they form the foundation of how JavaScript really works. Which one do you think is the most powerful

One thing that used to confuse me in JavaScript: Why do both == and === even exist? Coming from other languages, it felt unnecessary. Turns out, they solve two different problems. == tries to be flexible and converts values: 0 == "0" → true === is strict, no conversion: 0 === "0" → false So it’s not random. It’s just two different rules: flexible vs exact. Most of the time, you just want exact. #javascript #webdevelopment

JavaScript Promise chaining vs async/await: Promise chains: → Harder to read → Error handling complex → Callback-ish Async/await: → Reads like sync code → try/catch works naturally → Easier debugging The choice is obvious. #JavaScript #AsyncJS #CleanCode

I've been writing JavaScript for over a year. Thought I understood var, let, and const. I didn't. "var a" inside a block accessible outside. Prints "10". "let b" inside the same block, try to access it outside and you get: ReferenceError: b is not defined Same block. Same code. Completely different behavior. Turns out var lives in global memory. let and const get their own separate block scope. Once the block is done, they're gone. This is why going back to fundamentals matters #JavaScript #WebDev #LearnInPublic #NamasteJavaScript

A quick look at some powerful TypeScript features: • Generics (with constraints) • Conditional & Mapped Types • typeof & keyof These concepts make it easier to write flexible, reusable, and maintainable TS code. Code 👇 https://lnkd.in/gDsycMSS Sharing a few simple examples in the slides 👇 #TypeScript #WebDevelopment #JavaScript JavaScript Mastery