006 includes method

// Real Use Case Example
const blockedUsers = ["user1", "user2"];

if (blockedUsers.includes(currentUser)) {
  console.log("Access denied");
}

// String
"Hello".includes("hello"); // false ❗️
"Hello".toLowerCase().includes("hello"); // true

// Array
const fruits = ["apple", "banana", "orange"];

console.log(fruits.includes("banana")); // true
console.log(fruits.includes("grape"));  // false
console.log(fruits.includes("apple", 1)); // false (starts at index 1)