What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let sum = numbers.reduce((total, num) => total + num, 0); console.log(sum); | JavaScript | MYTAT

Q

What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let sum = numbers.reduce((total, num) => total + num, 0); console.log(sum);

A). A) Finds the maximum number in numbers B). B) Calculates the average of numbers in numbers C). C) Sums all numbers in numbers D). D) Checks if all numbers in numbers are even

Answer & Solution

Answer: Option C

Solution:

The code snippet calculates the sum of all numbers in the array numbers using the reduce method. The reduce method takes a callback function as an argument, which receives two parameters (total and num). It starts with an initial value of 0 and adds each number from the array numbers to the total in each iteration. After iterating through all elements, it returns the final sum, which is then logged to the console. In this case, the sum of elements 1 + 2 + 3 + 4 + 5 = 15, which is the output of the code.

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