Get sum of array columns in JavaScript

We have arrays:

[1, 2, 3, 0]
[1, 2, 3]
[1, 2]

Need to get a one array, indexes which is will be like a sum of columns. Expected result:

[3, 6, 6, 0]

How do you sum all the specific fields of an object in an array?

To sum a property in an array of objects:Call the reduce() method to iterate over the array. On each iteration increment the sum with the specific value. The result will contain the sum of the values for the specific property.

You can use Array.prototype.reduce() in combination with Array.prototype.forEach().

var array = [
        [1, 2, 3, 0],
        [1, 2, 3],
        [1, 2]
    ],
    result = array.reduce(function (r, a) {
        a.forEach(function (b, i) {
            r[i] = (r[i] || 0) + b;
        });
        return r;
    }, []);
document.write('<pre>' + JSON.stringify(result, 0, 4) + '</pre>');