AkashRajvanshi

function User (firstName, lastName) {
  this.first_Name = firstName
  this.last_Name = lastName
}
const showUserDetails = new User('akash', 'rajvanshi')
console.log(showUserDetails) // User { first_Name: 'akash', last_Name: 'rajvanshi' }

AkashRajvanshi

function showDetails() {
  console.log(`My Name is ${this.fullName}`) // My Name is undefined
}
const User = {
  fullName: 'Akash Rajvanshi'
}
//call without any .call()/ .apply()/ .bind()
showDetails()

//As we know in simple function "this" refer to the window object

AkashRajvanshi

var name = {
  firstName: 'Akash'
}

function showDetails(lastName, age) {
  console.log(this.firstName + ' ' + lastName + ' : ' + age) // Akash Rajvanshi : 22
}

showDetails.apply(name, ['Rajvanshi', 22])

AkashRajvanshi

function Person(firstName, lastName) {
  this.first_name = firstName
  this.last_name = lastName

  this.showDetails = function () {
    console.log(`Name: ${this.first_name} ${this.last_name}`) // Name: Akash Rajvanshi
  }
}

const person = new Person('Akash', 'Rajvanshi')

AkashRajvanshi

var name = {
  firstName: 'Akash'
}

function showDetails(lastName, age) {
  console.log(this.firstName + ' ' + lastName + ' : ' + age) // Akash Rajvanshi : 22
}

showDetails.call(name, 'Rajvanshi', 22)

AkashRajvanshi

function showDetails() {
  console.log(this) // { firstName: 'Akash', lastName: 'Rajvanshi' } X 3
  console.log(this.firstName, this.lastName) // Akash Rajvanshi x 3
}

var fullName = {
  firstName: 'Akash',
  lastName: 'Rajvanshi'
}

AkashRajvanshi

const button = document.querySelector('button')

button.addEventListener('click', e => {
  console.log(this) // window
  console.log(e.currentTarget) // button
})

AkashRajvanshi

# Example ssh config file. Usually located in ~/.ssh/config (user) or /etc/ssh/ssh_config (system)
# This works on both linux and MacOS

# Basic ssh commands converted to ssh/config file format



# Simplest format
# Run with: "ssh blog" => (equivalent to: "ssh ubuntu@example.com" and  "ssh -i ~/.ssh/id_rsa -p 22 ubuntu@example.com")
Host blog

AkashRajvanshi

// Example of Single object
const user = {
	firstName: 'Akash',
	lastName: 'Rajvanshi',
	age: 22,
	getDetails() {
		console.log(`I am ${this.firstName} ${this.lastName}`)
	}
}
user.getDetails() // I am Akash Rajvanshi

AkashRajvanshi

// Example Of Constructor Function
function User(firstName, lastName, age) {
  this.firstName = firstName
  this.lastName = lastName
  this.age = age

  this.getDetails = function () {
    console.log(`I am ${this.firstName} ${this.lastName}`)
  }
}