Jul 21, 2025 · 6 min read · Hey there, fellow JavaScript enthusiasts! Today, we're diving into a fundamental aspect of modern JavaScript: variable declarations. If you've ever felt a bit hazy about var, let and const what they are, how they differ, and when to use each; you're ...
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Jun 26, 2025 · 6 min read · 1. Variable Hoisting Hoisting is JavaScript’s default behavior of moving variable and function declarations to the top of their containing scope (global or function scope) during the compilation phase, before the code is executed. However, only decla...
Join discussionJul 22, 2024 · 8 min read · When you're starting with JavaScript you'll surely bump into something known as hoisting. If you're a beginner, this could be a little tricky as well as confusing because this hoisting thing lets you access a variable even before declaring it and som...
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Jul 21, 2024 · 12 min read · In the ever-evolving world of web development, JavaScript continues to adapt and improve at a remarkable pace. As we approach mid-2025, the JavaScript community eagerly anticipates the next major release of the ECMAScript standard—ES16, officially kn...
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Jul 8, 2024 · 5 min read · We all might have heard of "hoisting" while working in JavaScript. But not everyone knows in depth about it. In this post let's dive deep into it. var colour = "white"; console.log(colour); // white Here it's a simple block of code where the vari...
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Jun 24, 2024 · 4 min read · I'm sure you've encountered the error message Cannot access 'x' before initialization or seen undefined when running JavaScript code. These issues arise due to hoisting and the Temporal Dead Zone (TDZ). Understanding these concepts is crucial for wri...
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May 27, 2024 · 3 min read · Unveiling JavaScript Scope, Lexical Environment, and Hoisting: Demystifying Key Concepts Scope: Where Variables and Functions Live Scope determines where you can access a specific variable or function in your code. It is directly dependent on the lex...
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Apr 8, 2024 · 1 min read · Variable shadowing: In JavaScript, variable shadowing occurs when a variable with the same name as a variable in a higher scope is declared in a lower scope, potentially causing confusion; let a = 10; if (true) { let a = 20; console.log(a); } ...
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Mar 31, 2024 · 25 min read · When I started my journey with JavaScript I used to think about how things work under the hood, why the setTimeout code runs after the synchronous code, how is it even possible to call a function even before declaring it, and why do we get errors if ...
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Jan 7, 2024 · 2 min read · Hoisting is a concept that enables us to extract values of variables and functions even before initializing/assigning value without getting errors and this happens during the 1st phase (memory creation phase) of the Execution Context. In the context ...
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