Memory Asignment

1. let

1st.example

console.log("Before: ", greeting);

let greeting = "hola";

console.log("After: ", greeting);

ReferenceError: Cannot access 'greeting' before initialization

2nd.example

greeting = "hello";
console.log("Before: ", greeting);

let greeting = "hola";

console.log("After: ", greeting);

ReferenceError: Cannot access 'greeting' before initialization