Callbacks in JavaScript: forEach, map, filter, and setTimeout

🚀 Day 67 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects 💻 🔹 What I Worked On: • Iterated through array of objects using for loop • Printed all elements and accessed object properties like loc • Used loop with step increment (i += 2) to print alternate values • Practiced reverse counting using for and while loops • Used forEach() for cleaner array iteration 💡 Key Learning: • Arrays of objects are very common in real-world applications • Loop conditions must be handled carefully (i < length vs <= length) • forEach() is simple and readable for iteration • Multiple ways to loop → choose based on requirement 🔥 Takeaway: 👉 Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step 🚀 #Day67 #JavaScript #Loops #ArrayIteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir

I used to believe that JavaScript operated with some hidden “thread algorithm” behind the scenes. However, I learned that it doesn't function that way. JavaScript is single-threaded, yet it effectively manages multiple tasks simultaneously through the event loop, not threads. Here's a simplified breakdown: - There’s one main worker (the call stack). - There’s a waiting area (task queues). - There’s a loop that continuously checks what to run next. The core flow looks like this: while (true) { run sync code first if nothing is running: run all microtasks (Promises) then pick one macrotask (timers, I/O) } What surprised me the most is the priority system: Promises always execute before timers. Even a setTimeout(..., 0) has to wait its turn. As for the “threading” aspect? It exists, but not in the way you might expect. The engine (like V8) runs your code in a single thread, while the environment (browser or Node.js) utilizes multiple threads for tasks like network calls and timers. In essence, JavaScript doesn’t schedule threads; it schedules tasks. This shift in perspective can significantly change your understanding of asynchronous code. #javascript #learning #webdevelopment #programming #codewithishwar

Day 5 — #100DaysOfCode Built a Random Color Generator using JavaScript today. ✅ With a simple click, the background color changes dynamically—making the concept of DOM manipulation and event handling more practical and visual. Projects like these make learning more engaging and help connect concepts more clearly. Building, learning, and improving step by step. 🚀 #100DaysOfCode #JavaScript #WebDevelopment #FrontendDevelopment #Projects #Consistency

🚀 I finally understood Closures in JavaScript (and it was confusing at first) At first, I thought every function call resets variables… But closures completely changed my understanding. Here’s the simple idea 👇 👉 A closure is when a function remembers variables from its outer function, even after the outer function has finished. Example: function outer() { let count = 0; return function () { count++; console.log(count); }; } const counter = outer(); counter(); // 1 counter(); // 2 counter(); // 3 💡 Why does this work? Because the inner function “remembers” the variable count. Even though outer() has already executed, the value is not lost. 🔥 Key takeaway: Normal functions → reset values every time Closures → keep values alive This concept is widely used in: ✔️ Counters ✔️ Data hiding ✔️ Event handlers Still practicing and improving my JavaScript fundamentals 💻 Have you ever struggled with closures? 🤔 #JavaScript #WebDevelopment #MERNStack #Coding #Learning #100DaysOfCode

🚀 𝐃𝐚𝐲 𝟓/𝟏𝟓 𝐨𝐟 𝐌𝐲 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐒𝐞𝐫𝐢𝐞𝐬 Today I learned about Loops in JavaScript 🔁 👉 Loops are used to run a block of code multiple times. 📌 Types of Loops: 1️⃣ for loop for (let i = 0; i < 5; i++) { console.log(i); } 2️⃣ while loop let i = 0; while (i < 5) { console.log(i); i++; } 👉 Both loops do the same thing, but the use depends on the situation. 📌 Key Difference: for loop → when you know how many times to run while loop → when condition-based looping is needed Loops make coding faster and more efficient 💻✨ 💬 Question: Which loop do you find easier — for or while? Let’s learn together 🚀 #JavaScript #WebDevelopment #LearningInPublic #Day5 #FrontendDevelopment

Day 66 | JavaScript Loops & Array Iteration Today I practiced JavaScript loops and working with arrays of objects🧑🏻💻 - What I Worked On: •Iterated through array of objects using for loop •Printed all elements and accessed object properties like loc •Used loop with step increment (i += 2) to print alternate values •Practiced reverse counting using for and while loops •Used forEach() for cleaner array iteration 💡 Key Learning: •Arrays of objects are very common in real-world applications •Loop conditions must be handled carefully (i < length vs <= length) •forEach() is simple and readable for iteration •Multiple ways to loop → choose based on requirement Takeaway: Mastering loops is key to handling data efficiently in JavaScript Consistency is improving logic step by step #Day66 #JavaScript #Loops #Arraylteration #ProblemSolving #CodingJourney #10000Coders #WebDevelopment #SravanKumarSir

Day 3 — JavaScript is humbling me in the best way. Started with the basics I thought I already knew. Turns out I knew the syntax but not the why. var vs let vs const — I used to just pick randomly. Now I get why const is default and var is basically legacy. The thing that actually clicked today: arrow functions aren't just shorter syntax. They handle 'this' differently. That's why everyone prefers them in certain situations. Also spent an hour on map, filter, and reduce with real data instead of fake tutorials. Way more useful. Favourite thing I learned: optional chaining (?.) — it's saved me from so many "cannot read property of undefined" errors already. Drop a JavaScript concept below that confused you at first 👇 #javascript #webdevelopment #frontenddeveloper #coding

JavaScript becomes a different language the moment you realize this: 👉 Functions are not just reusable blocks… they are values. And once you understand that, concepts like callbacks and higher-order functions stop feeling confusing and start feeling natural. In this video, I’ve broken it down step by step: How values behave in JavaScript How objects behave Why functions behave the same way (and why that matters) From there, everything builds logically: ✔ Passing functions as arguments ✔ Returning functions from functions ✔ What exactly a callback is ✔ What a higher-order function is ✔ How this leads to more flexible and reusable code No jargon. No unnecessary complexity. Just a clear, practical approach to a core JavaScript concept. 🎥 Watch here: https://lnkd.in/gM8ibZ6M This is Part 1 — next, we’ll explore how this shows up in real code with: setTimeout, forEach, map, filter #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #LearnToCode #JavaScriptDeveloper #SoftwareDevelopment #Developers #CodingJourney #TechEducation #Hosiyar #JS

🚀 𝐃𝐚𝐲 𝟔/𝟏𝟓 𝐨𝐟 𝐌𝐲 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭 𝐋𝐞𝐚𝐫𝐧𝐢𝐧𝐠 𝐒𝐞𝐫𝐢𝐞𝐬 Today I learned about Functions in JavaScript 💡 👉 Functions are reusable blocks of code They help us avoid repeating the same code again and again. 📌 Syntax: function greet() { console.log("Hello!"); } 👉 Calling the function: greet(); // Hello! 📌 Functions with parameters: function greet(name) { console.log("Hello " + name); } greet("Kanishka"); 👉 Functions make code cleaner, reusable, and easy to manage 💻✨ 💬 Question: Have you started using functions in your projects? Let’s learn together 🚀 #JavaScript #WebDevelopment #LearningInPublic #Day6 #FrontendDevelopment

Day 5 of 100 days. A situation many developers encounter when working with JavaScript, especially at the early stages… You write your code, trigger an action, and expect a response - but nothing happens. No error. No output. Just silence. And it’s not just beginners - this is a common experience across all levels. The challenge: JavaScript not responding 👉 What I always advise: • Ensure your script is properly linked • Confirm the DOM has fully loaded before running your code • Use console.log() to trace and debug your logic Often, the issue isn’t complex - it’s simply hidden. Do you use console.log() when debugging, or do you have another favorite method? Share your approach in the comments! #FrontendDevelopment #100DaysOfSolvingCodingProblems #WebDevelopment #CodingTips #Debugging #JavaScript