array from range numbers in javascript code example

Example 1: create range array javascript

[...Array(10).keys()]
//=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

Example 2: js array get range

const array = ['a','b','c','d']
const sliced = array.slice(0, 3)
// ["a", "b", "c"]