Yes remove the commas:
let output = parseFloat("2,299.00".replace(/,/g, ''));
console.log(output);Yes remove the commas:
let output = parseFloat("2,299.00".replace(/,/g, ''));
console.log(output);Removing commas is potentially dangerous because, as others have mentioned in the comments, many locales use a comma to mean something different (like a decimal place).
I don't know where you got your string from, but in some places in the world "2,299.00" = 2.299
The Intl object could have been a nice way to tackle this problem, but somehow they managed to ship the spec with only a Intl.NumberFormat.format() API and no parse counterpart :(
The only way to parse a string with cultural numeric characters in it to a machine recognisable number in any i18n sane way is to use a library that leverages CLDR data to cover off all possible ways of formatting number strings http://cldr.unicode.org/
The two best JS options I've come across for this so far:
- https://github.com/google/closure-library/tree/master/closure/goog/i18n
- https://github.com/globalizejs/globalize
JavaScript: Thousand separator / string format - Stack Overflow
javascript - How can I format a number with commas as thousands separators? - Stack Overflow
Convert a number with commas as thousands separators
Thousands Separator
The reference cited in the original answer below was wrong. There is a built in function for this, which is exactly what kaiser suggests below: toLocaleString
So you can do:
(1234567.89).toLocaleString('en') // for numeric input
parseFloat("1234567.89").toLocaleString('en') // for string input
The function implemented below works, too, but simply isn't necessary.
(I thought perhaps I'd get lucky and find out that it was necessary back in 2010, but no. According to this more reliable reference, toLocaleString has been part of the standard since ECMAScript 3rd Edition [1999], which I believe means it would have been supported as far back as IE 5.5.)
Original Answer
According to this reference there isn't a built in function for adding commas to a number. But that page includes an example of how to code it yourself:
function addCommas(nStr) {
nStr += '';
var x = nStr.split('.');
var x1 = x[0];
var x2 = x.length > 1 ? '.' + x[1] : '';
var rgx = /(\d+)(\d{3})/;
while (rgx.test(x1)) {
x1 = x1.replace(rgx, '
2');
}
return x1 + x2;
}
Edit: To go the other way (convert string with commas to number), you could do something like this:
parseFloat("1,234,567.89".replace(/,/g,''))
If is about localizing thousands separators, delimiters and decimal separators, go with the following:
// --> numObj.toLocaleString( [locales [, options] ] )
parseInt( number ).toLocaleString();
There are several options you can use (and even locales with fallbacks):
number = 123456.7089;
result = parseInt( number ).toLocaleString() + "<br>";
result += number.toLocaleString( 'de-DE' ) + "<br>";
result += number.toLocaleString( 'ar-EG' ) + "<br>";
result += number.toLocaleString( 'ja-JP', {
style : 'currency',
currency : 'JPY',
currencyDisplay : 'symbol',
useGrouping : true
} ) + "<br>";
result += number.toLocaleString( [ 'jav', 'en' ], {
localeMatcher : 'lookup',
style : 'decimal',
minimumIntegerDigits : 2,
minimumFractionDigits : 2,
maximumFractionDigits : 3,
minimumSignificantDigits : 2,
maximumSignificantDigits : 3
} ) + "<br>";
var el = document.getElementById( 'result' );
el.innerHTML = result;<div id="result"></div>Details on the MDN info page.
Edit: Commentor @I like Serena adds the following:
To support browsers with a non-English locale where we still want English formatting, use
value.toLocaleString('en'). Also works for floating point.
I think your solution is one of the shorter ones I've seen for this. I don't think there are any standard JavaScript functions to do this sort of thing, so you're probably on your own.
I checked the CSS 3 specifications to see whether it's possible to do this in CSS, but unless you want every digit in its own <span>, I don't think that's possible.
I did find one project on Google Code that looked promising: flexible-js-formatting. I haven't used it, but it looks pretty flexible and has unit tests using JsUnit. The developer also has a lot of posts (though old) about this topic.
Be sure to consider international users: lots of nations use a space as the separator and use the comma for separating the decimal from the integral part of the number.
Lots of good answers already. Here's another, just for fun:
function format(num, fix) {
var p = num.toFixed(fix).split(".");
return p[0].split("").reduceRight(function(acc, num, i, orig) {
if ("-" === num && 0 === i) {
return num + acc;
}
var pos = orig.length - i - 1
return num + (pos && !(pos % 3) ? "," : "") + acc;
}, "") + (p[1] ? "." + p[1] : "");
}
Some examples:
format(77.03453, 2); // "77.03"
format(78436589374); // "78,436,589,374"
format(784, 4); // "784.0000"
format(-123456); // "-123,456"
I think your solution is one of the shorter ones I've seen for this. I don't think there are any standard JavaScript functions to do this sort of thing, so you're probably on your own.
I checked the CSS 3 specifications to see whether it's possible to do this in CSS, but unless you want every digit in its own <span>, I don't think that's possible.
I did find one project on Google Code that looked promising: flexible-js-formatting. I haven't used it, but it looks pretty flexible and has unit tests using JsUnit. The developer also has a lot of posts (though old) about this topic.
Be sure to consider international users: lots of nations use a space as the separator and use the comma for separating the decimal from the integral part of the number.
Lots of good answers already. Here's another, just for fun:
function format(num, fix) {
var p = num.toFixed(fix).split(".");
return p[0].split("").reduceRight(function(acc, num, i, orig) {
if ("-" === num && 0 === i) {
return num + acc;
}
var pos = orig.length - i - 1
return num + (pos && !(pos % 3) ? "," : "") + acc;
}, "") + (p[1] ? "." + p[1] : "");
}
Some examples:
format(77.03453, 2); // "77.03"
format(78436589374); // "78,436,589,374"
format(784, 4); // "784.0000"
format(-123456); // "-123,456"
» npm install parse-decimal-number
