1️⃣ Basics Q1: What are var, let, and const? var → function-scoped, hoisted, can re-declare. let → block-scoped, hoisted (temporal dead zone), no re-declare. const → block-scoped, must be initialized, no reassignment. Q2: Difference between == a...
Introduction Understanding the differences between 'then/catch' and 'async/await' is crucial for any frontend developer, as it allows us to comprehend asynchronous operations in JavaScript. Brief overview of JavaScript asynchronous handling Understan...
Have you ever wondered what happens behind the scenes when your JavaScript code comes to life on the browser? The JavaScript runtime is the environment where the whole magic happens. It provides all the necessary components for executing the Javascri...
Introduction Hello fellow developers! If you are appearing for any front-end profile interview, these basic task-based 60 questions, and 40 advance questions along with code snippets as answers, provide a practical and efficient way to learn JavaScri...
Inheritance is a cornerstone of object-oriented programming, allowing developers to reuse code, extend functionality, and create relationships between objects. JavaScript, being a versatile and dynamic language, provides multiple ways to implement in...
In JavaScript, an object literal is a simple way to define an object using a set of key-value pairs. You define an object literal by using curly braces {} and specifying properties inside it. const student ={ Name : "dheeraj", Uid : 9856, ...
Javascript is a scripting language that runs inside an environment which is called a javascript run time environment like any browser or node js. initially, javascript was used for only the client side to update content, and manage multimedia but aft...
In JavaScript, the filter() method helps to pick specific items from an array based on certain conditions. It creates a new array containing only the ones that match our criteria without changing the original array. If no elements pass the test, the ...
Hey there! Today, let's dive into the fascinating world of the JavaScript event loop. It's a crucial concept to grasp if you want to build smooth and responsive web applications. So, let's get started! What is the Event Loop? The event loop is a mech...
I am not going to tell you what is the prototype in javascript. Let's explore it. Just create an html and js file. Add the js file to html file and run it in the web browser. function ab() { } console.dir(ab); Now check the console of your browser...
