Problem

What does this evaluate to?

Array.from({ length: 26 }, (x, i) => (i + 10).toString(36)).join(", ")
Solution

What does this evaluate to?

Array.from({ length: 26 }, (x, i) => (i + 10).toString(36)).join(", ")

The English alphabet as a string – 

a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z

Wow, neat.