JavaScript: Format whole numbers using toLocaleString()

Question

I'm using the Number.prototype.toLocaleString() function to add commas to whole numbers. Documentation for it can be found here.

I am writing it as follows:

Number(data).ToLocaleString('en'); 

In Firefox/Chrome the number is displayed like 123,456,789. However, in IE it is displayed like 123,456,789.00.

1. Why is IE adding in the decimal point values?

2. How can I remove the decimal point values?

Rather than creating/using a custom function, I'm really just wondering if there is an option that I can add to ToLocaleString() like en, nodecimal. If that option is not available, I will consider a custom function.

Answer 1

How about:

const sum = 1000;  const formatted = sum.toLocaleString("en", {        minimumFractionDigits: 0,     maximumFractionDigits: 0, });  console.log(formatted); 

for:

// 1,000 

Or if you're into the money:

const sum = 1000;  const formatted = sum.toLocaleString("en", {     style: "currency",     currency: "USD",     minimumFractionDigits: 0,     maximumFractionDigits: 0, });  console.log(formatted); 

for:

// $1,000