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JavaScript: Format whole numbers using toLocaleString()

rated 0 times [ 16] [ 3] / answers: 1 / hits: 28978 / 11 Years ago, mon, february 3, 2014, 12:00:00

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.

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claudiofredye

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answered 11 Years ago simone · Accepted Answer

How about toLocaleString:

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 stuff:

const sum = 1000;



const formatted = sum.toLocaleString("en", {

    style: "currency",

    currency: "USD",

    minimumFractionDigits: 0,

    maximumFractionDigits: 0,

});



console.log(formatted);

for:

// $1,000

Replace "en" with one of the supported language tags*. For instance:

'en-US'

// en => a BCP 47 tag that represents a language

// US => a ISO_3166-1 Alpha-2 subtag that represents a country | optional

Replace "USD" with a ISO-4217 currency code. For instance:

'EUR'

// EUR is currency #978 on the active currencies codes list. 

// The result would be a numeric value prefixed by the € sign

* Further information is available on the BCP 47 and ISO 3166-1 wikis.