In modern JavaScript and especially while working with React, understanding how functions behave internally helps us write clean and bug-free code. In this article, we'll cover: Closures Rest Parameters Default Parameters Hoisting in Functions ...
In JavaScript, functions are a key part of writing reusable, clean, and powerful code. But when we start learning functions, two common terms confuse many learners: Function Declaration Function Expression Let’s understand both in detail with sim...
Introduction JavaScript has some strange things that can confuse people, and hoisting is one of them. Hoisting means you can use variables and functions before you declare them in your code. But how does this work, and what should you watch out for? ...
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...
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...
Function Expression: A function expression in JavaScript is when you assign a function to a variable. It's an alternative way to define a function compared to the traditional function declaration. In your example: const square = function(num) { r...
Hoisting: Hoisting allows functions and variables(with var) to be used before they are declared. This behavior gives us a peek behind the scenes of how JavaScript works It's a javascript behavior where function and variable declaration (with Var) are...
Hoisting is a special behavior of the JavaScript interpreter. Hoisting means that function and variable declarations are moved to the top of their containing scope. Variables Hoisting In JavaScript, variables are declared using let, const, and var. A...
Function JavaScript functions are defined with the function keyword. You can use a function declaration or a function expression. Function Declaration:- function functionName(parameters) { // code to be executed } Declared functions are not exec...
In simple terms, hoisting is a JavaScript behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase, before the code is actually executed. This means that you can use a variable or c...
