https://repl.it/C1Th/119 created by sethopia

Advanced Counting (2.6) Extra Problems.js

/*
	Advanced Counting
	
	We're going to rewrite our countdown function, but this time let's support negative numbers. If you pass the function a positive number, it counts down to 1. If you pass the function a negative number, it should count up to -1. You can assume the function will never be passed 0.
	 
	Please complete this problem in 2 ways.
	1. With a while loop
	2. With a for loop
	
	    count(4)
	    // 1
	    // 2
	    // 3
	    // 4
	    
	    count(-4)
	    // -4
	    // -3
	    // -2
	    // -1
	
*/

function count(n) {
	if (n < 0) var start = n, end = -1;
	else var start = 1, end = n;
	for (var i = start; i <= end; i++) console.log(i);
}

count(-10);

Advanced Counting (2.6) Extra Problems_console_dump.txt

Native Browser JavaScript
>>> -10
-9
-8
-7
-6
-5
-4
-3
-2
-1