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JavaScript, also abbreviated as JS, is a high-level server-side programming language. To build a JavaScript programming career, candidates need to crack the interview. They are asked for various JavaScript interview questions and answers.


Q1. “What is JavaScript?”

JavaScript is a scripting language used to create and control dynamic website content, JavaScript was initially created to “make web pages alive”.

The programs in this language are called scripts. They can be written right in a web page’s HTML and run automatically as the page loads.

Scripts are provided and executed as plain text. They don’t need special preparation or compilation to run.

Features like:

I will try to cover the most important fundamental concepts of React js. I have been trying to understand how virtual DOM works and thought on a high level it was clear.

React JS

01. “React is all about components”

React components are javascript functions.

Components are like functions that return HTML elements. React is designed around the concept of reusable components. Components are independent and reusable bits of code. You define small components and All components small or big are reusable, even across different projects. They serve the same purpose as JavaScript functions….

02. “Class Component”

As we know that in react components are two type one is class and…

01. “Primitive”

The JavaScript syntax defines two types of values: (Fixed values are called Literals, Variable values are called Variables).

A Primitive (primitive value, primitive data type)There are 7 primitive data types, console and print these primitive values using console.log():Number,String,bigint,boolean,Undefined,Symbol, and Null.

Most of the time, a primitive value is represented directly at the lowest level of the language implementation. Objects and Functions​ are also valued in the browser console:

For example:

console.log(23); // Number 
console.log(sajjad); // String
console.log(undefiend); // Undefiend

02. “Expressions”

An expression is a combination of values Since expressions produce values, variables, and operators, which computes a value the arguments of…

Magical Javascript 10 Basic Fundamental A re-introduction Concept.

Hello programmers! For today’s post, I’ve decided to do an article summary map of the basic A re-introduction to JavaScript.the basically summarizes the main foundational concepts without you needing to spend hours reading up on everything.

Alternatively, it can be used as a reference guide to quickly get you started. Bite-sized explanations are posted below. Hope you like it!

This post covers some basic A re-introduction to JavaScript.

Sajjad Sadiq

A Full Stack Developer

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