Practice functions. A basic rewriting of the .sort() method in JavaScript

sort.js

/* This is my version of sort. It is cluncky and took me far too
long to complete. But now it works!...Thanks to splice().*/

function sort(array){
	var currentLargest = array[0];
	// store sorted values to be itterated though if item is < currentLargest
	var tempArray = [];
	/* Updated final array to be returned. I was not sure if trying to itterate through,
	 tempArray while changing it, would cause unpredictable results so I tried this.*/
    var finalArray = [];
	array.forEach(function(item, index, array){
	    //start off with the first value to compair to 
		if(index === 0){
			tempArray.push(item);
		// If item is bigger than currentLargest push it, and update currentLargest
		}else if(item >= currentLargest){
            currentLargest = item;
            tempArray.push(item);
            //update finalArray to reflect tempArray
            finalArray = tempArray
        // If item is smaller find out where it goes in the array
		}else  {
			for(var j = 0; j < tempArray.length; j++){
			    // if item is smaller, put it in front, if not try next value in tempArray.
				if(item <= tempArray[j]){
					finalArray.splice(j, 0, item);
                    tempArray = finalArray;
					break;
				}
			}
		}
	});return finalArray;
};
console.log(sort([2, 4, 3, 7, 12, 76, 45, 122, 3, 4, 4, 45, 56, 3]));

//======================================
// ANOTHER VERSION OF SORT()
//======================================
var nums = [2, 34, 45, 3];

// Finds the smallest number in an array
function arrayMin(array){
   return Math.min.apply(Math, array);
};

// Finds the index of the smallest number in and array
var indexOfMin = function(array){
  return array.indexOf(arrayMin(array));
};

// Uses the above funcitons to make a new array by finding the lowest number first,
//putting it into a new array then erasing it from the old one.
var reOrder = function(array, index, min){
  newOrder = [];
  while(array.length > 0){
    newOrder.push(min(array));
    array.splice(index(array), 1);
  };return console.log("New array: " + newOrder + " Original array: " + array);
};
//testing the helpers
//console.log(arrayMin(nums));
//console.log(indexOfMin(nums));
reOrder(nums, indexOfMin, arrayMin);