add numbers 1 and 2 to the beginning of an array javascript code example
Example 1: es6 create array with increasing number
Array.from(Array(10).keys())
//=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
Example 2: list from 1 to 100 js
[...Array(100).keys()]
//=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]