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JavaScript - compute sum and average of elements in array
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In this article, we would like to show you how to compute the sum and average of elements in the array in JavaScript.
In this example, we use reduce() method to calculate sum of array elements. Then we use the sum to calculate the average value.
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const array = [1, 2, 3];2
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const sum = array.reduce((a, b) => a + b, 0);4
const average = sum / array.length || 0;5
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console.log(sum); // 67
console.log(average); // 2
