how do you format a number to currency when using React native EXPO?

Question

how do I take a number like 10000 and have it output as $10,000.00?

I even had a problem with String.format(...) with a

Answer 1

could be achieved as shown below, and you could also remove trailing 00 at the end if there is no decimals

      costing= () => {
        const cost= 1478.90 + 940;
        return parseFloat(cost).toFixed(2).replace(/(\d)(?=(\d{3})+(?!\d))/g, '$1,');
      }