Exact Change | Really odd problem

JavaScript
1

My code is shown down below, for some reason, it passed all the tests except for this one. It doesn’t wanna add the last penny for some odd reason… (as in finalArr keeps returning [[“PENNY”, 0.49]]) with 0.01 left in the till.

var valArr = [["ONE HUNDRED", 100.00], ["TWENTY", 20.00], ["TEN", 10.00], ["FIVE", 5.00], ["ONE", 1.00], ["QUARTER", 0.25], ["DIME", 0.10], ["NICKEL", 0.05], ["PENNY", 0.01]];

function checkCashRegister(price, cash, cid) { 
  
  cid = cid.reverse();
  var change = cash - price;
  
  var total = cid.reduce(function(a,b){
    return a + b[1];
  }, 0.0).toFixed(2);  //intital value of a is 0.0
  
  if(total === change){
    return 'Closed';
  } 
  else if (total < change){
    return "Insufficient Funds";
  }
   
  
 var finalArr = valArr.reduce(function(acc, currVal, currInd){
   if (change >= currVal[1] && cid[currInd][1] !==0){
     var x = 0.00;
     while (change >= currVal[1] && cid[currInd][1] >= currVal[1]){
       x += currVal[1];
       change -= currVal[1];
       change = Math.round(change*100)/100; //weird JS math
       cid[currInd][1] -= currVal[1];
     }
       x = Math.round(x*100)/100;
       acc.push([cid[currInd][0], x]);
     return acc;
     
     
   }
   else{
     return acc;
   }
   
 },[]);
  
  var postTotal = cid.reduce(function(a,b){
    return a + b[1];
  }, 0.0).toFixed(2);
   
  if(postTotal === 0){
    return "Closed";
  }

 
  // means if true return this, otherwise return that
  return finalArr.length > 0 && change == 0 ? finalArr : postTotal === 0 ? "Closed" : "Insufficient Funds";
}



checkCashRegister(19.50, 20.00, [["PENNY", 0.50], ["NICKEL", 0], ["DIME", 0], ["QUARTER", 0], ["ONE", 0], ["FIVE", 0], ["TEN", 0], ["TWENTY", 0], ["ONE HUNDRED", 0]]);```
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**Link to the challenge:**
https://www.freecodecamp.org/challenges/exact-change
2

change this to loose equality (double equals instead of triple equals), as you have 0.5 and 0.50 which will not be strictly equal,

OR don’t bother with the .toFixed() earlier on

like this:

var total = cid.reduce(function(a,b){
    return a + b[1];
  }, 0);