如何显示存储在四舍五入并带有逗号的变量中的数字？

let number = 1234567.89;
let formattedNumber = number.toFixed(2).replace(/\B(?=(\d{3})+(?!\d))/g, ",");
console.log(formattedNumber);

number = 1234567.89
formattedNumber = "{:,.2f}".format(number)
print(formattedNumber)

import java.text.DecimalFormat;

double number = 1234567.89;
DecimalFormat decimalFormat = new DecimalFormat("#,##0.00");
String formattedNumber = decimalFormat.format(number);
System.out.println(formattedNumber);