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 Not a function error.

I followed numerous articles, all incomplete and none working.

I don't need full internationalization, just the ability to format a number

Answer 1

You can use toFixed method for showing 2 decimal point.

let num = 1000; 
console.log(num.toFixed(2)); // 1000.00

And you can use Regex like this

function currencyFormat(num) {
   return '$' + num.toFixed(2).replace(/(d)(?=(d{3})+(?!d))/g, '$1,')
}
console.log(currencyFormat(2665)); // $2,665.00