Sorting an already sorted array?

JavaScript
1 
(function(){
	var arrayNumb = [2, 8, 15, 16, 23, 42];
	arrayNumb.sort();
	console.log(arrayNumb);
})();

Why does this print [ 15, 16, 2, 23, 42, 8 ]?

2

The default sort order is built upon converting the elements into strings, then comparing their sequences of UTF-16 code units values.

If you want to order them differently than that you need a callback function