Aggregating

Reduce an array to a single value. Numeric aggregates ignore non-numeric elements.

.sum() → number

Adds the numeric elements.

log [1, 2, 3, 4, 5].sum()       // 15
log [1, "two", 3, null].sum()   // 4

.product() → number

Multiplies the numeric elements.

log [1, 2, 3, 4].product()  // 24

.average() → number

The mean of the elements.

log [1, 2, 3].average()  // 2

.max() → number / .min() → number

The largest / smallest element.

arr = [3, 1, 4, 1, 5, 9, 2, 6]
log arr.max()  // 9
log arr.min()  // 1

.join(sep) → string

Joins the elements into a string separated by sep.

log [1, 2, 3].join("-")  // "1-2-3"