Avez's Blog

Understanding unexpected Behaviours of setTimeout

Dec 2, 20244 min read

Consider the following code: console.log("start"); setTimeout(() => { console.log("callback"); }, 5000); console.log("end"); In this example,...

Understanding unexpected Behaviours of setTimeout

Event Loop

Dec 1, 20247 min read

JavaScript is a synchronous, single-threaded language. It operates with one call stack, which is part of the JavaScript engine, and can execute only...

Event Loop

First Class Functions in JS

Nov 17, 20243 min read

Before diving into First-Class Functions, let’s first clarify the different function-related terminologies in JavaScript and understand how they...

First Class Functions in JS

setTimeout + Closures in JS

Nov 17, 20244 min read

Closures and setTimeout in JavaScript Let’s explore an interesting example of how closures behave with setTimeout. Example 1: function a() { var a...

setTimeout + Closures in JS

Closures in JS

Nov 17, 20243 min read

Let’s start understanding about closures by taking an example function x(){ var a = 7; function y(){ console.log(a); } ...

Closures in JS

Block Scope and Shadowing in JS

Nov 16, 20243 min read

Block A block in JavaScript is defined using curly braces { }. It is also referred to as a compound statement because it allows us to group multiple...

Block Scope and Shadowing in JS