1(12345.67).toFixed(2).replace(/\d(?=(\d{3})+\.)/g, '$&,');  // 12,345.67

1// Create our number formatter.
2var formatter = new Intl.NumberFormat('en-US', {
3  style: 'currency',
4  currency: 'USD',
5});
6
7formatter.format(2500); /* $2,500.00 */

1function floatToEuro(float){
2    var euroCurrency 
3    euroCurrency = '\u20AC' + float.toLocaleString('nl-NL',{minimumFractionDigits: 2});
4    console.log(euroCurrency);
5    return euroCurrency;
6};