generate array with numbers 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: javascript create array from 1 to n

// Javascript create array from 1 to n 

[...Array(n+1).keys()].slice(1)

// E.g. for n = 10:
// [...Array(11).keys()].slice(1)
// => [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Example 3: how to fill array with consecutive numbers javascript

Array.from({length: n}, (_, i) => i + 1)
//=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]