AnimeshPandey

// Example 2. Default Binding.
function getPokémon(){
    console.log("Pokémon in Ultra Ball is : ", this.ultraBall);
}

var ultraBall = "Articuno";
getPokémon();
// Output
// Pokémon in Ultra Ball is : Articuno

AnimeshPandey

// Example 1. Call-sites and Call-stacks
function thunderbolt(){
   debugger;
   console.log("Using Thunderbolt!");
}

function attack(){
    console.log("Attacking!");
    thunderbolt(); // <- Call-site for thunderbolt()
}