JavaScript is a lightweight, interpreted programming language with object-oriented capabilities that allows you to build interactivity into otherwise static HTML pages. The general-purpose core of the language has been embedded in Netscape, Internet Explorer, and other web browsers

Today I discuss some important topics of javascript that you must be known. let’s begin….


Undefine is a javascript primitive value. For various reasons, we find the variable as an undefine type. Some reasons are given below:

i) If you define a variable but not assign value.

React is a JavaScript library for building interactive user interfaces. It was created by Facebook. Since its release has made waves in the JavaScript community. It’s gained in popularity over the past few years.

forasmuch as React is a library, so that it is not a complete solution. You often need to use more libraries.

In this blog, I discuss the core concepts of React.

React Core Concepts are:

  • JSX
  • Components & Props
  • State & Lifecycle
  • Virtual DOM
  • Handling Events
  • Fragments


JSX stands for JavaScript XML. It allows us to write HTML in javascript. JSX makes it easier to write…

JavaScript is the language of web development. All web developers must be good at JavaScript. Today I discuss some important topics which are helping a web developer to upgrade his/her skill. let’s start

1) Error handling

All web developers are very careful when writing code. As if there is no error in the code. But sometimes an unexpected user input can occur an error this crashes a program. Don’t worry JavaScript has a weapon to protect our code from unexpected user input. The weapon is try…catch statement. let’s see..

JavaScript is an object-oriented computer programming language commonly used to create interactive effects within web browsers.

1. What if we want to add between a number and character

Suppose you assign a character in a variable and assign a number in another variable. what is the sum of these two variables? let’s see

emdadul hoque

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