JavaScript – Day 20 🚀 Promise.finally() & Custom Errors finally() is used to execute code regardless of a promise’s result, making it perfect for cleanup tasks. Custom errors help make error handling clearer and more maintainable in real-world applications. 📌 Day 20 of my JavaScript learning series. Next: Debouncing & Throttling (performance basics) 🔥 #JavaScript #Promises #AsyncJavaScript #ErrorHandling #WebDevelopment #BackendDeveloper #LearnJavaScript #Programming #Coding #DeveloperCommunity #100DaysOfCode
JavaScript Promises & Error Handling
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🟨 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗶𝘀 𝘀𝗶𝗻𝗴𝗹𝗲-𝘁𝗵𝗿𝗲𝗮𝗱𝗲𝗱 — 𝘀𝗼 𝗵𝗼𝘄 𝗱𝗼𝗲𝘀 𝗶𝘁 𝗵𝗮𝗻𝗱𝗹𝗲 𝗮𝘀𝘆𝗻𝗰 𝘁𝗮𝘀𝗸𝘀? JavaScript runs on **one main thread**. Yet it can handle things like: 🌐 network requests ⏳ timers 📦 user interactions The secret is the **Event Loop**. It manages: • Call Stack • Task Queue • Callback execution So while one task runs, others wait in the queue. 𝗝𝗮𝘃𝗮𝗦𝗰𝗿𝗶𝗽𝘁 𝗶𝘀𝗻’𝘁 𝗽𝗮𝗿𝗮𝗹𝗹𝗲𝗹 — 𝗶𝘁’𝘀 𝘀𝗺𝗮𝗿𝘁𝗹𝘆 𝗼𝗿𝗴𝗮𝗻𝗶𝘇𝗲𝗱. #JavaScript #Programming #LearningInPublic #ITStudent
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🚀 JavaScript Functions – Simplified & Explained Clearly I’ve created a short and practical guide covering: ✅ Named Functions ✅ Anonymous Functions ✅ Arrow Functions (ES6) ✅ Clear examples with outputs ✅ Simple comparison summary Functions are the backbone of JavaScript. Understanding them properly makes writing clean, reusable, and scalable code much easier. If you're learning JavaScript or strengthening your fundamentals, this guide will help you build clarity. Consistent learning. Consistent improvement. 💻✨ #JavaScript #WebDevelopment #FrontendDevelopment #Coding #Programming #SoftwareDevelopment #LearnToCode
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Day 6 of “Js in bits series – (Datatypes - Boolean)” In this article, I cover: 🔹 What the Boolean datatype is 🔹 How JavaScript uses true/false in conditions 🔹 Examples with comparisons and logical checks 🔹 Why Boolean values are essential for decision-making in programs 👉 https://lnkd.in/gc-H6ky9 #javascript #webdevelopment #frontend #programming #softwareengineering #learning
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Mastering JavaScript Loops: A Comprehensive Guide Loops are fundamental constructs in programming, allowing you to execute a block of code repeatedly. This tutorial dives deep into all types of loops in JavaScript, explaining their syntax, use cases, and best practices with practical code examples. Learn to choose the right loop for every scenario. Read the full article 👇 https://lnkd.in/dM2U38MH #Technology #Programming #WebDevelopment #SoftwareEngineering #JavaScript #JSLoops #CodingTips #FrontendDevelopment #FutureOfWork #DigitalTransformation
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Many beginners in JavaScript get confused between null and undefined, but the difference is actually simple. When a variable is declared but not assigned any value, JavaScript automatically gives it the value undefined. This means the variable exists, but it hasn't been initialized yet. On the other hand, null is a value that is intentionally assigned by the developer to indicate that the variable should contain no value. In simple terms: undefined → variable exists but no value has been assigned yet. null → developer deliberately sets the variable as empty. Pro Tip: Use null when you intentionally want a variable to be empty. If you just declare a variable without assigning anything, it will automatically be undefined. #JavaScript #WebDevelopment #FrontendDevelopment #CodingTips #LearnToCode #Programming #SoftwareDevelopment #Developers #TechLearning #CodingCommunity #100DaysOfCode #JavaScriptTips #CodeNewbie #WebDev
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Leveling up my JavaScript skills 🚀 Today I focused on some advanced concepts that really separate beginners from confident developers: ✔ Hoisting – how JavaScript reads variables ✔ Closures – functions with memory & lexical scope ✔ The this keyword – global vs object vs arrow context ✔ Prototypes – inheritance and the prototype chain Step by step, turning confusion into clarity. Consistency is the key to growth 💻✨ #JavaScript #WebDevelopment #FrontendDeveloper #LearningInPublic #Programming #DeveloperJourney
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Mastering 'this' in JavaScript: A Comprehensive Guide to Context The 'this' keyword in JavaScript is notorious for its complexity and the confusion it often causes. This tutorial demystifies 'this', exploring its various contexts, common pitfalls, and how to control its value using 'call', 'apply', and 'bind' for robust application development. Read the full article 👇 https://lnkd.in/dtZbsgAB #JavaScript #Programming #WebDevelopment #Coding #Tech #thisKeyword #JavaScriptThis #FunctionBinding #CallApplyBind #ContextInJS #FutureOfWork #DigitalTransformation
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🚀 JavaScript Concept – What’s the Output? An object is stored inside an array and then the original variable is set to null. Does this change the value inside the array? 🤔 This question tests your understanding of references in JavaScript. Comment your answer below! 👇 #JavaScript #Coding #WebDevelopment #Programming #LearnTogether
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Day 2 of JavaScript at ChaiCode ☕💻 Today was all about functions and how JavaScript really works under the hood. We learned: • What functions are and the functional programming paradigm • Three types of functions: • Function Declaration • Function Expression • Arrow Function • Parameters vs Arguments • Returning values from functions • Hoisting in JavaScript • Variable scope and closures A lot of concepts became clearer with real explanations and examples. Big thanks to Piyush Garg for explaining everything in such an easy and practical way 🙌 Looking forward to learning more 🚀 #JavaScript #ChaiCode #piyushgarg #WebDevelopment #LearningJourney #Functions #Programming
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💯 Understanding Scope in JavaScript is very important for writing clean and bug-free code. In this post, I explained: • What is Global Scope • What is Function Scope • What is Block Scope • How var, let, and const behave differently • Why scope matters in real projects Many beginners get confused between var, let, and const. Once you understand scope clearly, your JavaScript logic becomes much stronger. If you are learning JavaScript, this concept is a must-know 🚀 🔗 Connect with me on LinkedIn: https://lnkd.in/dTqFu3VR #JavaScript #WebDevelopment #FrontendDevelopment #Programming #Coding #LearnToCode #100DaysOfCode #Developer #Tech
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