JavaScript is a versatile and powerful language, but some of its core concepts can be tricky to grasp, especially when it comes to prototypes and the behavior of the delete operator. In this article, we’ll answer the important question: What are JavaScript prototypes and the delete operator? and explore why using delete doesn’t remove inherited […]
Meta Description:Confused why a Promise.then() runs before setTimeout() with a 0ms delay? Learn how JavaScript’s event loop, microtasks, and macrotasks control the execution order, with real code examples. 🔍 Introduction JavaScript is single-threaded, but thanks to the event loop, it can handle asynchronous operations with surprising precision. One common interview or real-world developer question is: […]
JavaScript closures are one of the most powerful — and sometimes confusing — concepts in the language. Whether you’re preparing for a job interview or just learning JavaScript, closures are essential to understand. In this blog post, we’ll break down closures using a simple, real-world example involving an outer() and inner() function. By the end, […]
If you’ve ever wondered how JavaScript knows “where to find a variable”, you’re thinking about the scope chain. Understanding the scope chain is critical for mastering variable access, debugging, and building efficient code—especially when dealing with functions, closures, or nested blocks. In this blog, we’ll break down: Let’s dive in with explanations and examples that […]
🧠 What Are Nested Closures in JavaScript? In JavaScript, a closure is a function that retains access to variables from its outer scope—even after the outer function has executed. When one closure contains another closure, this is called a nested closure. Nested closures allow deep control over private variables, function factories, currying, and advanced patterns […]
When you define multiple functions with the same name inside another function in JavaScript, only the last declaration takes effect due to function hoisting. JavaScript hoists all function declarations to the top of their scope, and if the same function name is declared more than once, the latest version overrides the previous ones — even […]
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones. It starts with 0 and 1, and continues indefinitely. Mathematically, the series is represented as: In this blog post, we will walk through a simple JavaScript code to generate the Fibonacci series up to the nth […]
Understanding the Ternary Operator with a Real-Life Example in JavaScript In JavaScript, the ternary operator is a powerful and concise tool for making decisions based on conditions. It’s often used as a shorthand for an if-else statement and can simplify complex logic, making code more readable and compact. In this blog, we’ll dive into a […]
In JavaScript, the switch statement is a powerful tool used to make decisions based on multiple conditions. It’s often more efficient and cleaner than using multiple if-else statements, especially when you’re dealing with several possible values for the same variable. But, just like any programming feature, understanding the nuances is essential. In this blog, we’ll […]
In this post, we’ll take a deep dive into understanding how the splice() method works in JavaScript, specifically focusing on the statement array.splice(1, 2) when applied to the array [10, 20, 30, 40, 50]. We’ll go through step-by-step explanations, code breakdowns, and key insights to help you fully understand what’s happening in this operation. What […]
