length

Counts the number of values. 🏃 📼 📦 🌔 📒

Similar: index, indexRange, size, isEmpty.

array.length(x, [i], [I]);
// x: an array
// i: start index (-ve: from right) (0)
// I: end index (-ve: from right) (X)

const array = require('extra-array');

var x = [2, 4, 6, 8];
array.length(x);
// 4

array.length(x, 1);
// 3

array.length(x, 1, 3);
// 2

references

• Array.prototype.slice: MDN web docs
• Array.length: MDN web docs