Is there a way to use map() on an array in reverse order with javascript?

Question

I want to use the map() function on a javascript array, but I would like it to operate in reverse order.

The reason is, I\'m rendering stacked React co

Answer 1

I prefer to write the mapReverse function once, then use it. Also this doesn't need to copy the array.

function mapReverse(array, fn) {
    return array.reduceRight(function (result, el) {
        result.push(fn(el));
        return result;
    }, []);
}

console.log(mapReverse([1, 2, 3], function (i) { return i; }))
// [ 3, 2, 1 ]
console.log(mapReverse([1, 2, 3], function (i) { return i * 2; }))
// [ 6, 4, 2 ]