Are you recap your JavaScript string method ? I explain some most used JavaScript string method that used everyday in our programming life.

String 🤗

String is JavaScript primitive data type which contain any text and number . Its a sequence of characters, numbers, special characters and arithmetic values. String must be created by closing single quotes ( ‘ ’ ) or double quotes (“ ”).


I introduced you some important JavaScript core concept that must be know as a JavaScript developer.

#1 Truthy & Falsy Value

Falsy value

A falsy value is something which evaluates to FALSE, for instance when checking a variable. In simple terms we could say, variables that do not have values or do not exist but it’s more than that. Below are a list of all falsy values

  • false
  • 0(zero) Both positive and negative
  • ''
  • null
  • undefined
  • NaN
let a = false 
let b = 0
let c = -0
let d = ''
let e = null
let f = undefined
let g = NaN
console.log(Boolean (a))…

React is an open-source, front end, JavaScript library for building user interfaces or UI components. React is a JavaScript library. It is not exactly a framework. React build a nice user interface (UI) and it is maintained by Facebook. React can be used for developed single page applications or mobile applications. However, React is only concerned with state management and rendering that state to the DOM, so creating React applications usually requires the use of additional libraries for routing, as well as certain client-side functionality. It’s simply the language of user interface “outcomes”.

ReactDOM.render(<h1>Hello, world!</h1>,document.getElementById('root'));

Introducing JSX

JSX is…


What is Binding?

Variable is generally known as binding. When we declare a variable or initialize a variable, we are actually binding a value name inside a scope or a functions. So binding occurs whenever we declare or initialize a variable using var, let, const.

Sakibur Rahaman

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