Handle money in javascript

moneyFormatHelper.js

var formatDollarsToCents = function(value) {
  value = (value + '').replace(/[^\d.-]/g, '');
  if (value && value.includes('.')) {
    value = value.substring(0, value.indexOf('.') + 3);
  }

  return !isNaN(value) ? Math.round(parseFloat(value) * 100) : 0;
}

var formatCentsToDollars = function(value) {
  value = (value + '').replace(/[^\d.-]/g, '');
  value = parseFloat(value);
  return !isNaN(value) ? value / 100 : 0;
}