windowBinding.js

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

window.fullname = 'Alash Rajavashi'

function showDetails() {
  console.log(`My Name is ${this.fullName}`) // My Name is Akash Rajvanshi
}

showDetails()