Coderbyte: Have the function DashInsert(num) insert dashes ('-') between each two odd numbers in num. For example: if num is 454793 the output should be 4547-9-3. Don't count zero as an odd number.

dashInsert.js

//coderbyte

function DashInsert(num) { 

var prev='', 
	newstring='';

	num = num.toString();
	
	for (var i=0; i<num.length; i++){
		parseInt(num[i])%2 == 0 ? current='even' : current='odd';
		if (current=='odd' && prev=='odd'){
			newstring=newstring + '-' + num[i];
			prev='odd';
		} else {
			newstring=newstring + num[i];
		 	prev=current;
		}
	}

  return newstring; 
         
}