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What will be the output?

let arr = [1, 2, 3];

let result = arr.map(num => num * 2);

console.log(result);

What will be the output?

let arr = [1, 2, 3];

arr.length = 0;

console.log(arr);

What will be the output?

let arr = [2, 4, 6];

let sum = 0;

for(let num of arr){
  sum += num;
}

console.log(sum);

What will be the output?

let arr = [1, 2, 3];

let result = arr.includes(2);

console.log(result);

What will be the output?

let arr = ["HTML", "CSS", "JS"];

console.log(arr.indexOf("CSS"));

What will be the output?

let arr = [1, 2, 3, 4];

console.log(arr.slice(1, 3));

What will be the output?

let arr = [1, 2, 3];

arr.unshift(0);

console.log(arr);

What will be the output?

let arr = [10, 20, 30];

arr.shift();

console.log(arr);

What will be the output?

let arr = [1, 2, 3];

arr.pop();

console.log(arr);

What will be the output?

let arr = [5, 10, 15];

console.log(arr[arr.length - 1]);