Optimize JavaScript and CSS with Space-Saving Tips

What will be the output of the following JavaScript code? console.log([] + []); console.log([] + {}); console.log({} + []); 💬 Drop your answers below without running the code! #JavaScript #Developers

Day 1 — Reverse a String (JavaScript) Problem Write a function that reverses a given string. Example Input: "hello" Output: "olleh" Approach Start from the last character of the string and iterate backwards. Keep adding each character to a new string until the loop finishes. Code function reverseString(str){ let reversed = "" for(let i = str.length - 1; i >= 0; i--){ reversed += str[i] } return reversed } console.log(reverseString("hello")) What I Learned Basic string traversal and how iteration works from the end of a string. #javascript #frontenddeveloper #codingpractice #dsa

📌 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! 💡

0ms Delay... but what about the extra arguments? 🧐 Most developers know setTimeout(callback, delay), but did you know you can pass arguments directly into the callback? #JavaScript #WebDevelopment #CodingQuiz #SoftwareEngineering #FrontendTips

What To Know in JavaScript (2026 Edition). Part 3. RegExp Improvements. Working with user input in RegExp has always been risky — special characters could break your patterns. New improvements solve this with safe escaping. A small but critical improvement: - fewer bugs - safer handling of user input - easier dynamic regex creation #frontend #webdev #javascript #performance

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

JavaScript: Mirror Distance Problem Day 5 👈 Goal: Find the mirror distance of a number — the absolute difference between the number and its reversed form. Approach: Reverse the given number using modulo (%) and division. Subtract the reversed number from the original. Take the absolute value to ensure a positive result. Example: Input: 123 Reversed: 321 Mirror Distance: |123 - 321| = 198 #JavaScript #TypeScript #DSA #CodingInterview #ProblemSolving #FrontendDevelopment #Developers #100DaysOfCode

localStorage vs sessionStorage – Quick JavaScript Tip Need to save data in the browser? Here’s the simple difference: localStorage saves data forever (until you delete it) and works across all tabs. sessionStorage only lasts while the tab is open — perfect for temporary stuff. Bonus Tip: Wrap them in a small helper to avoid JSON.stringify errors and try/catch boilerplate.I use localStorage daily for user settings and sessionStorage for multi-step forms.Which one do you use more? And what’s the coolest (or worst) thing you’ve stored in them? Drop your answers below #JavaScript #WebDev #Frontend #CodingTips

💡 Pure vs Impure Functions in JavaScript 🔹 Pure Function Same input → Same output. No side effects. const add = (a, b) => a + b; 🔸 Impure Function Depends on or changes external state. let total = 0; const addToTotal = (v) => total += v; 🚀 Why it matters? Predictable code. Easier testing. Fewer bugs. 👉 Write pure functions whenever possible. #JavaScript #CleanCode #FunctionalProgramming

CORS blocked your request. Not a bug. Not a glitch. Your browser did it on purpose. Here's why, and how to stop fighting it 👇 #webdevelopment #CORS #javascript #LearnToCode #DevTips #planobit