Convert numbers into comma separated format with two decimals in javascript

问题

I am trying to convert numbers into comma separated format with two decimal places for each and every number in javascript:

My code:

Number(parseFloat(n).toFixed(2)).toLocaleString('en');

This code doesn't show two decimal places (.00) for whole numbers.

I am expecting following results for a set of numbers:

10000 => 100,00.00
123233.12 => 123,233.12
300000.5  => 300,000.50

Appreciate your answer, thanks.

回答1:

You can use the minimumFractionDigits option of the toLocaleString function.

// result 3,000.00
Number(parseFloat(3000).toFixed(2)).toLocaleString('en', {
    minimumFractionDigits: 2
});

// result 123,233.12
Number(parseFloat(123233.12).toFixed(2)).toLocaleString('en', {
    minimumFractionDigits: 2
});

You can even remove the parseFloat,toFixed and Number function usage as well, if this is not used for some logic other than displaying the decimal value up to 2 digits.

来源：https://stackoverflow.com/questions/38462619/convert-numbers-into-comma-separated-format-with-two-decimals-in-javascript