JavaScript Strict Mode Benefits and Best Practices

Ever wondered why changing employee1 also changes employee in JavaScript? 🤯 It’s the classic Reference Trap—objects are stored in the heap, and the = operator only copies the reference, not the object itself. In my latest video, I break down how memory references work and why mastering Pass by Reference is key to writing bug-free code. 👉 Watch the full explanation and level up your JavaScript skills! 🎬 #JavaScript #CodingTips #WebDevelopment #ProgrammingConcepts

In this Postman Tutorial, we will learn about variables in JavaScript. In order to do API test automation with Postman we need to learn JavaScript for API testing. As Postman tool supports JavaScript so we can write automated API tests in Postman using JavaScript. https://lnkd.in/dW3qEGcn #PostmanTutorial #javascript #javascriptforbeginners #PostmanAPITesting #ApiTesting #API #apiautomation #RcvAcademy #SoftwareTestingMentor

In this Postman Tutorial, we will learn about variables in JavaScript. In order to do API test automation with Postman we need to learn JavaScript for API testing. As Postman tool supports JavaScript so we can write automated API tests in Postman using JavaScript. https://lnkd.in/drHCD477 #PostmanTutorial #javascript #javascriptforbeginners #PostmanAPITesting #ApiTesting #API #apiautomation #RcvAcademy #SoftwareTestingMentor

In this Postman Tutorial, we will learn about variables in JavaScript. In order to do API test automation with Postman we need to learn JavaScript for API testing. As Postman tool supports JavaScript so we can write automated API tests in Postman using JavaScript. https://lnkd.in/dszUk5N3 #PostmanTutorial #javascript #javascriptforbeginners #PostmanAPITesting #ApiTesting #API #apiautomation #RcvAcademy #SoftwareTestingMentor

🚀 Day 952 of #1000DaysOfCode ✨ Understanding Arrow Functions in JavaScript Arrow functions look simple — but there’s more to them than just shorter syntax. In today’s post, I’ve explained arrow functions in a clear and practical way, including how they differ from regular functions and where they should (and shouldn’t) be used. From lexical `this` binding to cleaner function expressions, arrow functions help you write more concise and predictable code when used correctly. But they also come with limitations — especially when working with methods, constructors, or certain event handlers. Understanding these trade-offs is what helps you use them effectively in real-world applications. If you’re writing modern JavaScript, mastering arrow functions is a must-have skill. 👇 What’s one mistake you made while learning arrow functions? #Day952 #learningoftheday #1000daysofcodingchallenge #FrontendDevelopment #WebDevelopment #JavaScript #React #CodingCommunity #JSBasics

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

Built-in vs Manual Flattening in JavaScript Stop writing custom logic to flatten arrays in JavaScript. There’s already a built-in method for it: flat(Infinity) It flattens nested arrays of any depth into a single-level array, no loops, no recursion. Example: [1, [2, [3, [4]]]].flat(Infinity) // → [1, 2, 3, 4] Sometimes the simplest solutions are already part of the language. Knowing your standard library can save you more time than any framework.

#Day16 Understanding Callback Hell in JavaScript. Today I took on one of the most talked-about challenges in asynchronous JavaScript Callback Hell (also known as the Pyramid of Doom). In my Mentorship for Acceleration backend track, I built a simulated ice cream production process using multiple nested setTimeout callbacks to represent real asynchronous steps in a production line. What is Callback Hell? It occurs when we have multiple asynchronous operations that depend on each other, leading to deeply nested callbacks. While the code works, it becomes extremely difficult to read, debug, and maintain as the number of steps increases. It’s called the Pyramid of Doom because of the visual shape the code creates when you have many nested callbacks. Problems it creates: => Very difficult to read and understand the flow. => Hard to debug (which line belongs to which callback?). => Painful to maintain or add new steps. => Error handling becomes messy. => Code looks ugly and unprofessional. #M4ACELearningChallenge #LearningInPublic #JavaScript #CallbackHell #AsynchronousJavaScript

Day 2/100 of JavaScript 🚀 Today’s Topic: "let", "const", "var", hoisting and TDZ. "var", "let", and "const" are used to declare variables, but they differ in scope and initialization behavior - "var" is function-scoped and during the creation phase it gets initialized with "undefined", so it can be accessed before assignment. - "let" and "const" are block-scoped and are registered in memory during creation, but not initialized immediately. This leads to TDZ (Temporal Dead Zone) a phase where the variable exists in memory but remains uninitialized and cannot be accessed. Accessing "let" or "const" variables before initialization results in a ReferenceError. - "const" must be initialized at declaration and cannot be reassigned. - "let" allows reassignment but not redeclaration in the same scope. These differences make "let" and "const" more predictable and safer compared to "var". #Day2 #JavaScript #100DaysOfCode

🚀 Day 17/30 – slice() vs splice() in JavaScript These two methods look similar but behave very differently 👇 🔹 slice() Returns a new array Does NOT modify original array Used to extract elements 🔹 splice() Modifies the original array Can add/remove elements Used for updating the array 💡 In simple terms: 👉 slice = copy 👉 splice = change learn with w3schools.com #Day17 #FrontendDeveloper #JavaScript #InterviewPreparation #WebDevelopment #30DaysChallenge JavaScript Mastery