currency formatting js code example

Example 1: javascript format currency

function formatToCurrency(amount){
    return (amount).toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,'); 
}
formatToCurrency(12.34546); //"12.35"
formatToCurrency(42345255.356); //"42,345,255.36"

Example 2: javascript format number as currency

const formatter = new Intl.NumberFormat('en-US', {
  style: 'currency',
  currency: 'USD',
  minimumFractionDigits: 2
})

formatter.format(1000) // "$1,000.00"
formatter.format(10) // "$10.00"
formatter.format(123233000) // "$123,233,000.00"