4 ms·
The reduce one needs an initial value of 0 for that to work. Then both versions will return 0 if the array is empty. array.reduce((a, b) => a + b, 0);
by ahoge 11y ago
The reduce one needs an initial value of 0 for that to work. Then both versions will return 0 if the array is empty.
array.reduce((a, b) => a + b, 0);