can this keyword work in js arrow functions code example

Example 1: arrow function javascript

// Normal Function in JavaScript
function Welcome(){
  console.log("Normal function");
}

// Arrow Function
const Welcome = () => {
  console.log("Normal function");
}

Example 2: arrow function javascript

// Traditional Function
function bob (a){
  return a + 100;
}

// Arrow Function
let bob = a => a + 100;