Oct 10, 2025 · 2 min read · As mentioned in the MDN Docs “Lexical scope uses the location where a variable is declared to determine where it is available,” it sounds redundant — because if you already know where it is declared,then it feels obvious that you also know where it...
Join discussionJul 18, 2025 · 3 min read · Lets us understand lexical environment and closures with a simple analogy. Imagine you're in the city of Bengaluru. This city represents the global environment in JavaScript. Within this city, there are two apartment complexes — Prestige and Brigade ...
Join discussionJun 26, 2025 · 13 min read · How JavaScript decides which function runs when, and why inner functions can access outer variables Picture this: You're debugging a complex JavaScript application, and suddenly you hit a dreaded "Maximum call stack size exceeded" error. Your app cr...
Join discussionJun 6, 2025 · 3 min read · Two words that often scare beginners (and even some experienced devs):Lexical Scoping and Closures. But here’s the truth: If you understand how functions remember where they were created, and what variables were in reach — you've basically cracked b...
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Mar 5, 2025 · 2 min read · The Scope in JavaScript refers to the environment, context, or the lexical boundary of the function in which the variable is held. Types of Scopes: Local Scope Global Scope Global Scope: Variables which are declared outside the function are term...
Join discussionFeb 8, 2025 · 3 min read · Call Stack The call stack is a data structure that keeps track of function calls in LIFO (Last In, First Out) order. How It Works? When a function is called, it's pushed onto the stack. When the function finishes execution, it's popped off the sta...
Join discussionNov 18, 2024 · 2 min read · Closures are a fundamental concept in JavaScript that enables powerful features like data privacy, state persistence, and functional programming. This blog will demystify closures with examples and practical use cases. When are closures created? Clos...
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Sep 26, 2024 · 2 min read · Introduction: Closures are a fundamental concept in JavaScript that allows functions to access variables from their outer scope, even after the outer function has returned. This ability gives JavaScript its unique approach to state management and fun...
Join discussionMay 29, 2024 · 3 min read · Closures in JavaScript can seem like a complex concept, but they are fundamental to understanding how the language works. In essence, a closure is a function bundled together with its lexical environment. This means that a function, along with the va...
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May 12, 2024 · 1 min read · The definition Closure is bundling of two or more functions, where inner function has access to the properties and methods of the outer functions. function calculate() { var num1 = 10; function add(num2) { return num1 + num2; // retur...
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