javascript sum of array
const sum = arr => arr.reduce((a, b) => a + b, 0);javascript sum of array
const sum = arr => arr.reduce((a, b) => a + b, 0);reduce javascript
//note idx and sourceArray are optional
const sum = array.reduce((accumulator, element[, idx[, sourceArray]]) => {
//arbitrary example of why idx might be needed
return accumulator + idx * 2 + element
}, 0);Copyright © 2021 Codeinu
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