title: What is the best layer to use to format Currency numbers?
body: <p>I use Javascript on frontend, C# as middle layer and Oracle 9i as DB.</p>
  
  <p>What is the best practice when formatting numbers with 2 decimal precision into a currency? And what layers should be preferred amongst any of these three layers?</p>
  
  <p>Keeping in mind that the User will be able to edit these amounts on a few of my screens on the application.</p>