Combine Two Async Values with JavaScript Promises

Most JavaScript developers use things like console, setTimeout, or global variables every day… But have you ever wondered where they actually come from? 🤔 While learning more about JavaScript internals, I discovered something interesting about the global object and the difference between global and globalThis. The confusing part is that JavaScript runs in multiple environments: • Browsers use window • Node.js uses global • Web Workers use self So how do modern JavaScript libraries write code that works everywhere? That’s where globalThis comes in. I wrote a blog explaining: • What the JavaScript global object really is • The difference between global, window, and globalThis • Why globalThis was introduced in ES2020 • Simple examples + diagrams to make it easy to understand If you're learning JavaScript or want to understand what’s happening behind the scenes, this will help. Read the full blog here 👇 https://lnkd.in/gWT7QjDB #javascript #webdevelopment #nodejs #coding #learninpublic #developers

Built a JavaScript (Node.js) program to find the largest among three numbers 💻 Used the readline module to take user input. Implemented nested input prompts for better interaction. Applied conditional statements using if-else. Practiced comparison and logical operators. Improved understanding of decision-making logic. Focused on clean structure and readable code. Strengthening core JavaScript fundamentals step by step. Small logical programs build strong problem-solving skills 🚀 Continuing my journey in web and backend development 🔥 #JavaScript #NodeJS #CodingJourney #LearnToCode #ProgrammingBasics #WebDevelopment #StudentDeveloper #LogicBuilding #TechLearning #VSCode

🚀 Understanding the this Keyword in JavaScript I explored one of the most important concepts in JavaScript — the this keyword. Its behavior changes depending on how and where it is used, which makes it very powerful (and sometimes confusing 😅). Here are the 4 main contexts of this 👇 🔹 1. Global Scope In browser → this refers to the window object In Node.js → this refers to the global object (empty object) 🔹 2. Inside Regular Function (Standalone Function) In Node.js → this refers to the global object In browser → this refers to the window object 🔹 3. Inside Object Method this refers to the object that is calling the method 👉 It always points to the current executing object 🔹 4. Inside Arrow Function Arrow functions do not have their own this They inherit this from their surrounding (lexical) scope 💡 Key Learning: The value of this depends on how a function is called, not where it is defined. 📚 Understanding this is crucial for mastering JavaScript concepts like objects, functions, and advanced patterns. Harshit T #JavaScript #WebDevelopment #LearningJourney #FrontendDeveloper #Coding #NodeJS #Programming

🚨 𝗦𝘁𝗼𝗽 𝗨𝘀𝗶𝗻𝗴 `𝗳𝗼𝗿𝗘𝗮𝗰𝗵` 𝘄𝗶𝘁𝗵 𝗮𝘀𝘆𝗻𝗰/𝗮𝘄𝗮𝗶𝘁! This is one of the most common mistakes in JavaScript 👇 If you use: ```js users.forEach(async user => { await saveUser(user); }); ``` ❌ It does NOT wait properly. ❌ Your code finishes before async tasks complete. ❌ “All users saved” logs too early. Why? Because `forEach` does not handle Promises correctly. --- ## ✅ 𝗖𝗼𝗿𝗿𝗲𝗰𝘁 𝗪𝗮𝘆𝘀 𝘁𝗼 𝗛𝗮𝗻𝗱𝗹𝗲 𝗔𝘀𝘆𝗻𝗰 𝗟𝗼𝗼𝗽𝘀 ### 🏮 Sequential (One by One) ```js for (const user of users) { await saveUser(user); } ``` ### 🟰 Parallel (Faster) ```js await Promise.all( users.map(user => saveUser(user)) ); ``` ✔ Proper execution order ✔ No premature logs ✔ Cleaner async flow --- 💡 𝗥𝘂𝗹𝗲 𝘁𝗼 𝗥𝗲𝗺𝗲𝗺𝗯𝗲𝗿: 👉 𝗜𝗳 𝘆𝗼𝘂 𝗻𝗲𝗲𝗱 `𝗮𝘄𝗮𝗶𝘁`, 𝗱𝗼𝗻’𝘁 𝘂𝘀𝗲 `𝗳𝗼𝗿𝗘𝗮𝗰𝗵`. ✅Save this before you forget 📌 Follow for more real-world JavaScript insights 🚀 --- ### 🔥Hashtags: #JavaScript #NodeJS #AsyncAwait #WebDevelopment #BackendDevelopment #FullStackDeveloper #CodingTips #SoftwareDevelopment #Programming #LearnToCode #DeveloperLife #TechCareers #100DaysOfCode #CleanCode #FrontendDeveloper

Master JavaScript with This One Simple Map! 🚀 Struggling to learn JavaScript? Don't worry—I've got you covered! This easy mindmap breaks it down into super simple steps anyone can follow. What's inside: • Basics: Variables, loops, and functions (start here!). • Web Magic: Play with DOM and fix errors like a pro. • Modern Tricks: Arrow functions, promises, and ES6 goodies. • Pro Level: Security tips, testing, and data structures. • Next Up: Jump into React, Angular, or Vue. Save this for your study sessions or interviews—it's your cheat sheet to JS mastery! 💪 #JavaScript #WebDevelopment #Coding #Programming #Developer #CheatSheet #Learning #Frontend #React #ReactJS #Angular #VueJS #WebDev #FrontendDeveloper #JavaScriptTips #CodingTips #DevCommunity #LearnToCode #JavaScriptRoadmap #BeginnerCoding

JavaScript Looks Simple Until You Look Closer JavaScript is one of the most flexible languages in web development. That flexibility is powerful, but it also means developers need to understand how the language behaves in different situations. What makes JavaScript interesting is not just what it does, but how it decides to do it. Understanding its behavior, data handling, and internal logic is essential when building reliable frontend and backend applications. The more I work with JavaScript, the more I realize that mastering it is less about memorizing syntax and more about understanding how it thinks. #JavaScript #FullStackDevelopment #WebDevelopment #Programming #FrontendDevelopment #BackendDevelopment #SoftwareEngineering #LearningJourney

JavaScript is not “just a scripting language” anymore. It literally runs the web. From a simple button click to complex real-time apps, from animations to full-stack servers — JavaScript is everywhere. But here’s the truth most beginners don’t realize: Learning syntax is easy. Mastering JavaScript thinking is hard. Because JavaScript teaches you how to think in: Asynchronous flows Event-driven logic State management Performance optimization Reusable architecture Anyone can write: "if, else, function" But real skill starts when you can: • debug weird async bugs • manage complex state cleanly • avoid unnecessary re-renders • structure scalable components • write code your future self understands Frameworks change every year. But JavaScript fundamentals stay forever. That’s why I focus more on: Closures Promises & Async/Await ES6+ concepts DOM manipulation Clean logic Because tools come and go. JavaScript thinking stays. Master JavaScript → Everything else becomes easier. #JavaScript #WebDevelopment #FrontendDevelopment #ReactJS #Programming #CleanCode #100DaysOfCode #Developers #SoftwareEngineering #BuildInPublic

Just published a new blog while learning JavaScript 🚀 While exploring how JavaScript works under the hood, I came across some interesting behavior around var and the Global Object. It led me to dive deeper into globalThis and how JavaScript manages global scope across different environments like Browsers and Node.js. Understanding these small internal concepts really changes how you see JavaScript. If you're learning JavaScript or exploring how it works internally, you might find this useful. 🔗 Read here: https://lnkd.in/geFtZqMf Big thanks to the people and communities that keep sharing knowledge and making the learning journey easier 🙌 Chai Aur Code Hitesh Choudhary Piyush Garg Anirudh J. Akash Kadlag Consistency is key. Still learning, still building. #javascript #webdevelopment #learninginpublic #100daysofcode #developers

🚀 Learning JavaScript Asynchronous Programming, Promises & APIs Recently, I explored some important JavaScript concepts that are essential for modern web development. 🔹 Asynchronous JavaScript JavaScript can handle tasks like API calls and timers without stopping the whole program. This makes applications faster and smoother. 🔹 Promises A Promise helps manage asynchronous operations. It has three states: • Pending • Fulfilled • Rejected Promises make code cleaner and avoid callback confusion. 🔹 APIs APIs (Application Programming Interfaces) allow applications to communicate with servers. Using fetch(), we can get data from external sources and display it in our applications. 💡 These concepts are very important for building real-world applications like weather apps, login systems, and payment gateways. Learning these fundamentals is helping me build a strong foundation in JavaScript and web development. #JavaScript #WebDevelopment

🚀 Top 10 JavaScript Concepts Every Developer Should Master JavaScript is more than just a scripting language — it powers modern web applications, servers, and even mobile apps. If you're learning or improving your JS skills, these are the 10 must-know concepts 👇 🔥 1. Closures Understand how functions remember variables from their outer scope — essential for powerful coding patterns. ⚡ 2. Promises & Async/Await Handle asynchronous operations like APIs without callback complexity. 🧠 3. Event Loop Learn how JavaScript manages concurrency while being single-threaded. 📦 4. ES6 Modules (Import/Export) Write scalable and maintainable applications using modular architecture. 🔄 5. Hoisting Understand how JavaScript processes declarations before execution. 🎯 6. Scope & Lexical Environment Control variable access using global, function, and block scope. 🪝 7. Higher-Order Functions Functions that accept or return other functions — core to functional programming. 🧩 8. Prototypes & Inheritance Understand how object behavior and inheritance work internally. ⚙️ 9. DOM Manipulation Dynamically interact with web pages and user actions. 🚀 10. Error Handling (try/catch) Build reliable applications by managing runtime errors gracefully. 📚 Start Learning JavaScript Here: https://lnkd.in/gQHPPXiM 💡 Master these concepts, and JavaScript will start making real sense — not just syntax, but how things actually work. #JavaScript #WebDevelopment #Programming #Coding #Developers #Frontend #LearnToCode #TechieLearn