cash register challenge

gistfile1.txt

function drawer(price, payment, cid) {
 
  var change = payment - price;
    
  function findCID (cid) {
    var total = 0;
    cid.forEach(function(value, index) {
      total += value[1];
    });
    return total;
  }
  
  var totalCID = findCID(cid);
    
  if (change > totalCID) {
    return "Insufficient Funds";
  }
  if (change === totalCID) {
    return "Closed";
  }
  

var changeBills = function findChange (change) {
     var count;
     var regDrawer = [];
   
     var reference = [100, 20, 10, 5, 1, 0.25, 0.1, 0.05, 0.01];
     var moneyNames = ['ONE HUNDRED', 'TWENTY', 'TEN', 'FIVE', 'ONE', 'QUARTER', 'DIME', 'NICKEL', 'PENNY'];
      
      reference.forEach(function(value, index) {
        // filter for each size bill 
        if (change >= value) {
          // make sure there's enough of this denomination
           if (change < cid[8-index][1]) { 
             count = Math.floor(change.toFixed(2)/value).toFixed(2);
             regDrawer.push([moneyNames[index], (count*reference[index]).toFixed(2)]);
             change = (change % value);
           } else {
             //take out all the twenties
             change -= (cid[8-index][1]).toFixed(2);
             regDrawer.push([moneyNames[index], (cid[8-index][1]).toFixed(2)]);
           }
          
         } 
      });
      
      return regDrawer;
  };
  
  
  return changeBills(change);
}



drawer(3.26, 100.00, [['PENNY', 1.01], ['NICKEL', 2.05], ['DIME', 3.10], ['QUARTER', 4.25], ['ONE', 90.00], ['FIVE', 55.00], ['TEN', 20.00], ['TWENTY', 60.00], ['ONE HUNDRED', 100.00]]);
//[['TWENTY', 60.00], ['TEN', 20.00], ['FIVE', 15], ['ONE', 1], ['QUARTER', 0.50], ['DIME', 0.20], ['PENNY', 0.04] ]