Firstly I want to thank my teammate. This project manager was Asif Estiak vai, he is such a nice guy also a good team player, he finished his task before due time. One of the things I liked about him was that he was helping us to be patient and…

In one word, main difference between “==” and “===” operator is that formerly compares variable by making type correction e.g. …

Truthy and falsy values

  • Any number 6, -6 will be taken as JavaScript true. And 0 will be false
  • Any String true, MT string false
  • The value of anything undefined is actually false

Some examples of False:

// false

// 0

// “”

// Undefined

// null

// NaN


History Of React?

React is a JavaScript library for building the user interface. It is maintained by Facebook and a community of individual developers and companies. React was created by Jordan Walke, a software engineer at Facebook.Facebook And Instagram Both Use React/React Native.

The program can be stopped due to a mistake in one of the programs, also due to the wrong input of the user and the program can be stopped, even if the server does not respond properly, the program can be stopped, the execution of the program can be stopped…

The main JavaScript data types can be divided into two parts:

One is primitive types and One is reference types.

There are primitive types

  • String
  • Number
  • Boolean
  • Undefined
  • Null
  • Symbol


Symbol Es6 has been added to the premitives


let customerName = ‘Jhon Doe’; // string literal

let firstName =…

JavaScript String


toUppercase is a string function or string method. If you enter a string here, it will uppercase all the characters in that string.

Var line = ‘Hunny Coders community’




toLowercase is a string function or string method. If you enter a string here…

Afroza Akter Ruma

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