Shivam Dhyani’s Post

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 3/100 of JavaScript 🚀 Today’s Topic: "use strict" "use strict" enables strict mode in JavaScript, which makes the code run in a more controlled and error-prone way by enforcing stricter rules - Variables must be declared before use - Using undeclared variables throws a ReferenceError - Duplicate parameter names are not allowed - this in functions (non-methods) is undefined instead of the global object. It helps catch common mistakes early and prevents unsafe actions in the code Strict mode can be applied to: - Entire script - Specific functions Using strict mode improves code quality, predictability, and makes debugging easier #Day3 #JavaScript #100DaysOfCode

🚀 Day 955 of #1000DaysOfCode ✨ How JavaScript Event Loop Works Behind the Curtains JavaScript looks simple on the surface — but under the hood, a lot is happening to make async code work smoothly. In today’s post, I’ve explained how the JavaScript Event Loop actually works behind the scenes, so you can understand how tasks are executed, queued, and prioritized. From the call stack to the callback queue and microtask queue, this concept explains why some functions run before others — even when the code looks sequential. Understanding the event loop helps you debug tricky async issues, avoid unexpected behavior, and write more predictable code. If you’re working with promises, async/await, or APIs, this is one of those concepts you must truly understand. 👇 What part of the event loop confuses you the most — call stack, microtasks, or callbacks? #Day955 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #AsyncJavaScript

#JourneyToTechJob – Day 10 🚀 #50DaysOfRevision Revisited JavaScript fundamentals today with a focus on problem-solving. ✔️ Practiced array-based problems ✔️ Focused on improving logic and approach ✔️ Worked on writing cleaner and more readable code Understanding that strong fundamentals make problem-solving easier. #SoftwareDevelopment #FrontendDevelopment #BackendDevelopment #JavaScript #DSA #ProblemSolving #BuildInPublic #Consistency #50DaysOfCodeChallenge

🚀 Understanding Async JavaScript: async/await vs .then() Today I practiced handling asynchronous operations in JavaScript using both Promises and async/await 🔥 📌 What I explored: 💡 Key Insight:While .then() works perfectly, async/await makes asynchronous code look synchronous — improving readability and maintainability. 🧠 Example takeaway: Both approaches are powerful — choosing the right one depends on the use case! 🌐 API used: JSONPlaceholder for dummy data testing 📈 Small steps every day towards mastering JavaScript! #JavaScript #AsyncAwait #WebDevelopment #FrontendDeveloper #CodingJourney #LearnInPublic #100DaysOfCode

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

🚀 Today I learned one of the most important JavaScript concepts — Promises. At first, asynchronous code felt confusing to me. How does JavaScript handle API calls, delays, and tasks without stopping the whole program? Then I understood the role of Promises 👇 👉 A Promise is an object that represents the future result of an asynchronous operation. It has 3 states: ⏳ Pending – operation still running ✅ Fulfilled – completed successfully ❌ Rejected – operation failed Simple Example: fetch("/users") .then((res) => res.json()) .then((data) => console.log(data)) .catch((err) => console.log(err)); 💡 Key Takeaways: ✔️ Better handling of asynchronous code ✔️ Cleaner than callback hell ✔️ Easier error handling with .catch() ✔️ Foundation of async/await The more I learn JavaScript fundamentals, the more I realize how powerful it is. 💻 What JavaScript topic confused you the most at first? 👇 #JavaScript #WebDevelopment #Promises #AsyncAwait #MERNStack #Coding #Learning #100DaysOfCode

𝐖𝐡𝐲 𝐈 𝐚𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐦𝐨𝐯𝐞𝐝 𝐭𝐨 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 🤔 It wasn’t because it’s trending. It wasn’t because “everyone is using it.” I switched when my JavaScript projects started growing… and debugging became frustrating 😅 Simple issues turned into time-consuming problems: 🔹 unexpected undefined errors 🔹 wrong data types passed around 🔹 bugs that only showed up at runtime Everything worked… until it didn’t. That’s when TypeScript started making sense to me. With types in place: ✔ I catch mistakes earlier (before runtime) ✔ code becomes easier to understand ✔ debugging becomes way less painful It’s not about writing more code… it’s about writing more predictable code. For me: 𝐓𝐲𝐩𝐞 𝐬𝐚𝐟𝐞𝐭𝐲 = 𝐟𝐞𝐰𝐞𝐫 𝐬𝐮𝐫𝐩𝐫𝐢𝐬𝐞𝐬 🛡️ Still learning, but definitely not going back anytime soon 🚀 #TypeScript #JavaScript #WebDevelopment #FullStack #LearningInPublic #DeveloperJourney #Upskilling

🚀 Understanding Template Literals in JavaScript 📖 Read full guide: https://lnkd.in/ghJ6jZRm While working with JavaScript, I explored how Template Literals simplify string handling and improve code readability. 🔍 Old way (messy): "Hello " + name + "!" ✨ New way (clean): Hello ${name}! 💡 Key Benefits: ✔ Easy variable embedding ✔ Multi-line strings ✔ Cleaner, more readable code Small feature, but a big impact in modern JavaScript 🚀 #JavaScript #WebDevelopment #Coding #FrontendDevelopment #LearningJourney #CleanCode

🚀 Day 963 of #1000DaysOfCode ✨ Difference Between var, let & const in JavaScript These three look similar… but behave very differently in real-world code. In today’s post, I’ve broken down the differences between `var`, `let`, and `const` in a simple and practical way, so you can understand when and why to use each of them. From scope and hoisting to re-declaration and mutability, these concepts directly impact how your code behaves — and are often the reason behind many unexpected bugs. I’ve also explained common mistakes developers make while using them, so you can avoid those pitfalls in your own projects. If you’re writing modern JavaScript, having clarity on this is absolutely essential. 👇 Which one do you use the most — `var`, `let`, or `const`? #Day963 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #JSBasics