Filling an array with numbers in a calendar in JavaScript

Let's start by making a function that will accept an integer as a parameter and create an array of numbers from 1 to this number:

function range(count) { }

We also need a function that will return the number of the month last day:

function getLastDay(year, month) { }

Implement the specified above functions and output to the console an array from 1 to the last day of the month.