insert sort using javascript and run it using node

insert_sort.js

// insert sort implement using javascript

function print(what) {
	console.log(what);
}

function insertSort(array) {
	var currentPos, before;	

	for(currentPos = 1; currentPos < array.length; currentPos++) {
		var current = array[currentPos];
		before = currentPos - 1;
		while(array[before] > current) {
			array[before + 1] = array[before];
			before--;
		} 
		array[before + 1] = current;
	}
}

// test insert sort
to_sort = [3, 9, 1, 4, 1];
insertSort(to_sort);
print("before sort");
console.log(to_sort);
print("after sort");
console.log(to_sort);