JavaScript Coding Question – 15

let array = [10, 20, 30];
let [ a, , b] = array;
array.fill(5, 1, 2);

const result = b + array[1];

console.log(result);

Output:

35

• [ a, , b] = array : Here, a is assigned the first element of array, which is 10. Second element is skipped by using comma(,). b is assigned with the third element of the array, which is 30.
• array.fill(5, 1, 2) : fill method modifies the original array. Here it replaces elements from index 1 to 2(index 2 is excluded) with the value 5.
• result = b + array[1] : Here b is 30 and value of array[1] is 5. So 30+5 is 35.