const sort = (arr) => arr.slice().sort(); // default sort
const sort = (arr) => arr.slice().sort((a, b) => a - b); // simple sort
const sort = (arr) => arr.slice().sort((a, b) => a.localeCompare(b, 'en', { sensitivity: 'base' })); // language-specific sort

users.sort((a, b) => a.firstname.localeCompare(b.firstname))

// function that returns a string in alphabetical order
function reorderStr(str) {
	return [...str].sort().join('');
}
console.log(reorderStr("hacker"));	//"acehkr"
console.log(reorderStr("javascript"));//"aacijprstv"

//sorts arrays of numbers
function myFunction() {
  points.sort(function(a, b){return a-b});
  document.getElementById("demo").innerHTML = points;
}

const months = ['March', 'Jan', 'Feb', 'Dec'];
months.sort();
console.log(months);
// expected output: Array ["Dec", "Feb", "Jan", "March"]

var names = ["Peter", "Emma", "Jack", "Mia"];
var sorted = names.sort(); // ["Emma", "Jack", "Mia", "Peter"]