javascript reduce system es6

Reduces and maps, like filters, but it takes more than one argument. We know the stat variables in the programming world.

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Its job is to count something or to detect it during an operation. Simply put, if we want to find the total of all the numbers in an array, then we can easily reduce it using Reduce.

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Since Reduce has stat variables, this may be the perfect choice for such an operation.

Hold the array

const arr = [1, 2, 3, 4,5]

I want to know the total of all items. If you apply Reduce

const total = arr.reduce(function(sum, item){
return sum += item;
}, 0);

Result

console.log(total) // 15