.reduce()

Definition + Syntax — MDN

/* 
Definition
:
The reduce() method executes a reducer function (that you provide) on each element of the array, resulting in single output value.
*/
// Syntax:
arr.reduce(callback( accumulator, currentValue, [, index[, array]] )[, initialValue])

When to Use:

In Action:

const aVeryBigSum = (array) => {
let sum = 0;
return array.reduce((sum…


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Tiffany Kanjanabout

Full stack web developer. Frontend and design enthusiast. Avid rock climber and amateur photographer.

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